Metal materials play an important role in the evolution of chip technology. In the process of shrinking the size of advanced processes, precious metals and their alloy materials play a key role in realizing small line width, low resistivity and high adhesion. After entering the 21st century, about 40 elements have been added to chip materials, of which about 90% are precious metals and transition metals.

Precious metal is one of the drivers of advanced chip technology. Intel has recently introduced antimony and ruthenium as metal contacts, which makes the capacitance smaller and breaks through the limitation of silicon. Previously, Intel took the lead in introducing cobalt materials into some interconnection layers of 10nm process nodes, which improved the electron mobility by 5-10 times and reduced the path resistance by 2 times.

Intel is not alone in the exploration of interconnected materials. Applied material is one of the first semiconductor technology manufacturers to use cobalt as wire material to replace traditional copper and tungsten. Grofonder also used cobalt instead of tungsten in the 7nm process. At present, Samsung and TSMC are also actively developing new interconnection materials. It is expected that in the near future, a new generation of interconnection materials, such as cobalt alloy, ruthenium and rhodium, will be on the scene, building a bridge for advanced process chips.

How to connect the roads in "Chip City"

"If a chip is compared to a city, then the transistor is its core area, which is responsible for the operation of information, and the interconnection layer is equivalent to the road of the city responsible for the traffic between information and the outside world." In an interview with the reporter of China Electronic News, Dr. Sheng Haifeng, a senior engineer of Magnesium Light, made such a vivid metaphor.

Sheng Haifeng believes that under Moore’s Law, when the transistors in the core area are getting smaller and denser, the road will become narrower and denser. When the density of the core area reaches a certain level, the transportation capacity of the road, that is, the RC delay of the interconnection layer, becomes the bottleneck of the speed improvement and power consumption reduction of the whole chip. In this case, the metal material of the interconnection layer needs to be upgraded to speed up the "road" of the transistor core area.

The continuation of Moore’s law is closely related to the evolution of interconnected materials. As the technical director, Chen Wang, a researcher from Tsinghua University, has worked for Intel and Fanlin Semiconductor, a chip equipment manufacturer, and has conducted in-depth research on high-end chip materials and advanced chip manufacturing and architecture. Chen Wang explained to the reporter of "China Electronic News" that the interconnection material is actually the wire for the interconnection and transmission of electrical signals between the front-end transistor layer and the back-end external circuit layer.

The enhancement of quantum effect is a big challenge for interconnected materials. Chen Wang told reporters that at present, the transistor has entered the sub-10nm scale in several geometric dimensions, and the quantum effect of materials has begun to be significant. If the transistor continues to be miniaturized, it will meet the challenges of materials, processes and device structures. As the core of connecting the front-end transistor layer and the outermost package ball layer, the miniaturization of interconnection materials at the middle and back ends is also facing the challenge of enhancing quantum effect.

Copper and "Damascus Process"

In the 1990s, the semiconductor manufacturing process entered the era of 0.18 micron, and the aluminum interconnection technology in the latter part met with a huge bottleneck. To this end, major semiconductor manufacturing companies in the world are looking for metals that can replace aluminum. Because copper is not expensive, has good conductivity and is easy to deposit, everyone thinks of copper in unison. However, because copper can’t be dry etched, the back-end interconnection problem can’t be solved for a long time.

In search of inspiration, an IBM engineer came to Damascus, which is known as the "garden on earth". By chance, he saw a craftsman who was engaged in metal inlaying in a remote corner.

When observing the craftsman’s mosaic technology, engineers keep seeing such scenes in their minds: carving is similar to etching, and mosaic is similar to deposition. He suddenly realized that copper can be deposited although it cannot be etched. Similar to Damascus process, engineers can etch the pattern film for metal wires on the dielectric layer first, and then fill the metal to realize multi-layer metal interconnection without etching the metal layer. In this way, the engineer successfully solved the technical problem of copper interconnection, and named this process Damascus process.

The times are progressing and the line width is shrinking. In 2018, companies such as Applied Materials used cobalt as wire material to replace traditional copper and tungsten wires in some areas.

Talking about the intergenerational changes of aluminum, copper and cobalt wires, Sheng Haifeng told reporters that copper replaces aluminum because it has better conductivity and can reduce the resistance in RC delay. In many logic chips, copper completely replaces aluminum, that is, all interconnection layers are upgraded to copper. But the substitution of cobalt for copper is different. Cobalt only has the advantage of conductivity to copper when the interconnect layer is very narrow, so cobalt only replaces copper in metal 0 layer (M0) and metal 1 layer (M1), and copper will continue to be used in other interconnect layers.

From cobalt to ruthenium and rhodium

Intel took the lead in introducing cobalt materials into some interconnection layers of 10nm process nodes, which improved the electron mobility by 5-10 times and reduced the path resistance by 2 times. The application material is one of the first semiconductor manufacturers to use cobalt as wire material to replace traditional copper and tungsten. Grofonder also used cobalt instead of tungsten in the 7nm fabrication process.

How to keep the resistivity at a low level at the scale of 20nm or even less is the core of the research and development of interconnection materials. Chen Wang said that although the introduction of cobalt has brought many problems in yield and reliability, it is a big leap in the field of interconnection materials, breaking through the existing copper material system and improving the overall performance of 10nm chips.

More importantly, the introduction of cobalt makes a good technical reserve for the later smaller node technology, and it is expected that the performance of the node will be improved more significantly after 7nm.

Interconnection materials are evolving towards ultra-thin, low resistivity, no barrier layer and low delay. At present, Samsung and TSMC are actively developing new interconnection materials. Chen Wang said that in the near future, a new generation of interconnection materials such as cobalt alloy, ruthenium and rhodium are also expected to appear.

At the same time, interconnection lines without diffusion barrier, even embedded interconnection rails under the transistor layer, are also the direction to solve the challenge of interconnection materials.

Introducing new metal materials to help advanced process

Precious metal materials play an important role in the evolution of chip technology. Chi Xiannian, an expert in semiconductor industry, told the reporter of China Electronic News that semiconductor chips are developing towards the trend of small size, high speed and low power consumption, which requires low contact resistance of contact points, good thermal stability and adhesion in a wide temperature range, and higher requirements are also put forward for lateral uniformity and thin diffusion layer.

Therefore, precious metals and their alloy materials play a key role in realizing small line width, low resistivity, high adhesion and low contact resistance in the process of shrinking the size of advanced processes.

In the process of continuous improvement of chip technology, the main challenge faced by transistors is to suppress short channel effect. Sheng Haifeng said that at this stage, the FinFET process is extended to 3nm at most. GAAFET technology is the main direction at nodes below 3nm. GAAFET mainly uses traditional materials, and the biggest challenge is process precision control.

Facing this challenge, the introduction of new metal materials is more critical. Sheng Haifeng told reporters that Samsung used lanthanum doping to improve Vt (threshold voltage). For the interconnect layer, the introduction of new materials is not only the interconnect layer metal cobalt, but also the barrier layer between the interconnect layer metal and the interconnect layer insulation layer. The function of barrier layer is to bond interconnect metal and insulating layer, and to improve the reliability of electron migration of interconnect layer. Tantalum and ruthenium are new elements that have been used and are being explored in the barrier layer.

At present, the horn of the global 2nm chip process war has sounded. In 2011, FinFET technology was introduced into 22nm node to replace planar transistor; New processes such as GAA and CFET are expected to be gradually introduced around the 3nm node.

These processes will involve a lot of material problems such as doping control and strain control. Chen Wang told reporters that at the sub-1nm node, the challenges of related materials become more and more prominent, and the quantum effect of materials will play a significant role. At that time, the quantum effect control of silicon-based materials, the atomic processing of materials and the single electron fluctuation of devices will profoundly challenge the existing material system and manufacturing technology. It is imperative to introduce new material systems, such as layered semiconductors, new principle devices and new processing technologies.

"It is reported that two-dimensional semiconductor materials are expected to help break through the advanced process of 2 nanometers due to their small size." Wan Qing, a professor at the School of Electronic Science and Engineering of Nanjing University, told the reporter of China Electronic News.

90% of the newly added chip materials are metal.

Precious metals have excellent electrical conductivity, stability and thermal conductivity, and are the key core materials in the semiconductor industry. After entering the 21st century, about 40 elements have been added to the chip materials, of which about 90% are precious metals and transition metals, which shows the importance of the application of metal materials in the chip field.

Metal materials used in the field of chip manufacturing have a higher "threshold". Chi Xiannian told reporters that the contact resistance and nano-scale adhesion should be considered in chip-level metal materials, so metals such as copper and cobalt can only be used in chip manufacturing after they are made into high-purity targets or alloy targets. At present, Hershey in Germany, Honeywell International Co., Ltd. in the United States and Tocao Co., Ltd. in Japan mainly produce chip-level copper and cobalt.

Affected by the situation in Russia and Ukraine, palladium has become one of the hottest precious metals at present. Russia’s palladium production accounts for about 40% of the global total, and palladium exports account for 35%. Palladium can be used in semiconductor components such as sensors and is also one of the important raw materials for chip packaging.

He Jinjiang, deputy general manager of Youyan Yijin New Materials Co., Ltd. told the reporter of China Electronic News that palladium and silver palladium alloy are important materials for preparing MLCC capacitors and resonators; In the packaging process of semiconductor, palladium alloy and palladium-plated wire are mainly used as wire bonding for electronic packaging instead of gold wire; In addition, palladium can be used as palladium alloy solder for precise connection of components. Based on the characteristics of palladium, new materials and applications are also being developed.

Precious metal materials have four main applications in the field of chips. Chen Wang told the reporter of China Electronic News that the first is the interconnected materials. For example, early aluminum to copper, to Al-Cu alloy and tungsten, and the latest cobalt and ruthenium under research.

The second is the metal gate material. Since Intel introduced the high dielectric-metal-gate transistor structure at the 45nm node in 2007, materials such as tantalum, tantalum nitride, titanium nitride and TiAlN have been widely used, and metal silicide contact has also undergone an evolution from titanium, cobalt and nickel to metal silicide system.

The third is metal barrier adhesion layer materials, such as titanium/titanium nitride, tantalum/tantalum nitride and other barrier adhesion layer materials commonly used in chip manufacturing and advanced packaging.

The fourth is metal materials for back-end packaging, including traditional lead-based alloys and lead-free antimony, tin, silver and indium-based alloys. In addition, the later substrate interconnection also involves a large number of precious metal materials. Among them, the nano-bottom interconnection metal, metal gate material and barrier adhesion layer material at the front end of the chip are all the frontiers of metal material research and development. Therefore, how to maintain the characteristics of high conductivity, low electromigration, uniform crystallinity, high thermal diffusivity and process integration at small scale has become the research focus of chip metal materials and the material bottleneck of the next generation of high-performance chips.

Metal price increases have little impact on chips.

Important precious metals in integrated circuits mainly include gold, silver and platinum. At present, the changes in the situation in Russia and Ukraine have had an impact on the global supply of non-ferrous metals and precious metals such as aluminum, nickel, palladium and platinum, which has led to an increase in the prices of related products and frequent fluctuations in the precious metals market. As the whole semiconductor industry chain is closed to some extent, the supply chain problem of the whole industry chain has been highlighted by the impact of COVID-19 epidemic in the early stage. Many people in the industry are worried that the fluctuation of the precious metal market is likely to further disturb the stability of the supply chain of the chip industry chain.

Precious metal is one of the important semiconductor materials, and its price fluctuation will have a certain impact on the cost of chip manufacturing. Chi Xiannian told the reporter of China Electronic News that with the fluctuation of precious metal prices, the cost of chip manufacturing will also change. For example, in the case of unstable precious metal supply chain, the purchase price of precious metals will rise accordingly, which will lead to a simultaneous increase in the price of finished chips.

However, due to the small proportion of precious metals used in chips and the small actual demand, Wan Qing believes that the fluctuation of precious metal prices has little impact on the chip industry.

Take palladium as an example. The increase in palladium price will lead to an increase in the cost of the semiconductor industry, but considering the small demand for palladium for a single semiconductor product, the increase in palladium price has little impact on enterprises with high raw material inventory water level. In addition, precious metals such as palladium can be replaced by other precious metals, so it is unlikely to face such a serious problem as supply failure.

In Chen Wang’s view, the impact of precious metal market fluctuation on the semiconductor industry chain needs to be viewed from both short-term and long-term perspectives. Chen Wang told reporters that the overall cost of the chip lies in the manufacturing cost, which mainly comes from the process cost. Precious metals are indispensable in chip manufacturing. If the international unstable factors are increasing, the shortage of a certain key metal material will continue to impact the chip price in the short term. However, due to the relatively low proportion of precious metals in the overall material consumption and cost of the chip industry, the fluctuation of precious metal prices has limited impact on the chip industry chain in the short term.

In the long run, the post-epidemic era and the continuous changes in the situation in Russia and Ukraine may bring some potential unstable factors. Chen Wang believes that the chip’s long supply chain characteristics also determine its own vulnerability. Unstable factors caused by the complex international situation may further test the chip-related industrial chain, such as affecting the layout and integration of materials, equipment and design industrial chains in the chip industry, and adversely affecting the layout and breakthrough of overall industrial optimization.

The superposition of various factors, such as the COVID-19 epidemic, makes the semiconductor supply chain in a relatively unstable state as a whole. Sheng Haifeng told the China Electronic News that the situation in Russia and Ukraine will definitely have an impact on the semiconductor supply chain, but this impact may not be limited to precious metals. For example, Ukraine is the main supplier of neon, and the complicated changes in the situation in Russia and Ukraine may affect the supply of neon. (Reporter Zhang Yiyi)

　　CCTV News:Since the United States conducted the first human nuclear test, the Soviet Union at that time began to plan a secret monitoring department to monitor the nuclear tests of other countries. For this reason, the Soviet Union established a huge intelligence network around the world. Now this mysterious institution has been made public by the Russian Ministry of Defense for the first time in 60 years.

　　In 1945, the United States conducted a nuclear test and announced the birth of a new type of powerful weapon to the world. At that time, when the Soviet Union met this kind of weapon, it would play a decisive role in future wars, so it was necessary to keep abreast of the relevant actions of various countries. After 13 years of planning, the special monitoring bureau of the Soviet Ministry of National Defense was established on May 13th, 1958.

　　The bureau’s main task is to monitor nuclear tests in other countries’ nuclear test sites. For nuclear explosions registered with the Special Monitoring Bureau, the following detection methods will be used:

　　First, radio technology and methods — — Based on the electromagnetic pulse records generated during the atmospheric nuclear explosion;

　　Second, the seismic recording method — — Recording seismic waves generated by nuclear explosions and distributed around the world;

　　Third, infrasound inspection method — — Records of atmospheric pressure fluctuation based on the results of shock wave action;

　　Fourth, magnetic detection method — — Record the difference of earth’s magnetic field caused by nuclear explosion;

　　V. Radionuclide method — — Based on the records of radioactive materials formed by nuclear explosions and transmitted through air medium over a long distance.

　　In addition to monitoring nuclear explosions, the Special Monitoring Bureau continuously detects the earthquake and radiation environment on the earth, and cooperates with the Federal Emergency Department, the Hydrometeorological Bureau and the Geophysical Department of the National Academy of Sciences.

　　At present, the special control office has a huge network composed of many observation points, which are composed of special monitoring laboratories and independent earthquake recording points located inside and outside the Russian Federation. The information obtained from all network branches will be transmitted to the processing center in Moscow through communication channels. In addition to the information from its own laboratory, the processing center will also use the information from seismic recording stations, infrasound stations and radionuclide stations of the international monitoring system network. Russian media said that this huge information network covers the whole Russian territory, even the whole world.

　　The final processing and analysis of all the collected information is completed by the duty personnel of the special monitoring bureau, and the relevant reports are submitted to the leaders of the state and the Russian Federation armed forces in time.

　　Xinhua News Agency, Jinan, October 6 (Reporter Wang Haiying) The briefing of the Commission for Discipline Inspection often appears in the media. Behind the briefing, how do the staff of the Commission for Discipline Inspection work? Before the Mid-Autumn Festival holiday, the reporter followed the Dongying Municipal Commission for Discipline Inspection to make unannounced visits and experienced various ways of handling cases, such as unannounced visits and tracking.

　　Escort the cause of poverty alleviation

　　On September 27, the reporter followed the direct investigation team of Dongying City Commission for Discipline Inspection to the county to carry out unannounced visits in the field of poverty alleviation. The comrades of the direct investigation team said that in the early stage, they found that there were problems in poverty alleviation work, and this time they had to go to the household to verify. If it was confirmed, they would be held accountable.

　　In the field of poverty alleviation, Dongying City has set up a number of groups to work at the grassroots level for a long time. In order to ensure the effectiveness of handling cases, the direct investigation teams in five counties and districts carried out cross-examination and unannounced visits, and did not contact the county and district disciplinary committees. All of them were directly managed and dispatched by the Municipal Commission for Discipline Inspection.

　　At 9 o’clock in the morning, I came to a village in Kenli District. The comrades of the Municipal Commission for Discipline Inspection and the comrades of the county direct investigation group met at the entrance of the village. During the previous visit and investigation, the wife of Lao Li, a poor household in this village, reported that her grandson (who lost his father and mother at an early age) had not received the poverty alleviation money from the village, and the direct investigation team was ready to investigate and verify this problem. The direct investigation team found Lao Li, who was drying corn. Lao Li is 70 years old. He said that his wife "mixed up", which was another poverty alleviation subsidy received by the town notice. The poverty alleviation fund issued by the village notice was received by him. Because he could not write, his name was signed by the village cadres, and he pressed his handprint.

　　During the investigation, the comrades of the direct investigation group asked some questions in a roundabout way: "Who else in the village went to collect the money at that time?" "which departments have received relief funds since last year" and so on, and repeatedly asked about the details of poverty alleviation funds issued by village cadres at that time.

　　Subsequently, the direct investigation team came to the town poverty alleviation office, the district animal husbandry bureau and other departments to verify. Another poverty alleviation subsidy proposed by Lao Li was found by the direct investigation team to be a social assistance from a bank. This kind of enterprise poverty alleviation assistance is more in Dongying City. Because it is a social assistance, the procedures are not standard enough. The direct investigation team conducted an in-depth investigation on issues such as identity verification and centralized collection during the distribution process.

　　After the work in Kenli District came to an end, the direct investigation team went to Hekou District again. The direct investigation team of the Dongying Municipal Commission for Discipline Inspection is jointly acting with the Hekou District Commission for Discipline Inspection to verify the renovation of dangerous houses in the whole region. A poor household in a village applied for funds for renovation of dilapidated buildings twice in three years, which was suspected of violating the rules. The Hekou District Commission for Discipline Inspection found out the problem last year, and it returned less 500 yuan when it was refunded, and it was found out again this year. The reporter followed the direct investigation team to this family to understand the situation, took photos to collect evidence, and asked the village and town cadres who declared and audited at that time to write a description of the situation and draw inferences to understand the situation in depth.

　　"Understand the process, to distinguish responsibility. We will continue to investigate and verify, find problems in a timely manner, and force improvement through accountability. " The head of the direct investigation team said.

　　Keep an eye on the old problem of private use of stuck buses

　　On September 28, the reporter went to Guangrao County with an unannounced visit team to implement the spirit of the eight central regulations. Once out of Dongying city, the unannounced interview team began to pay attention to whether there were buses on the road. When an unannounced interview team encounters a suspicious vehicle, it can find out the basic information of the vehicle by contacting the technical department, which is the key basis for the unannounced interview team to judge whether it is a bus.

　　The members of the unannounced interview team are experienced case handlers. They said that the brands of Dongying buses are generally Honda, Buick, Passat, Hyundai, etc., and they are old models. When they see these brands of vehicles, they are particularly vigilant.

　　Long-term unannounced visits have also allowed them to accumulate ways to identify buses: cars with dirty bodies are generally not buses, and the appearance of buses is generally clean; A car with toys and other decorations inside will not be a bus; Cars with red silk on rearview mirrors, wheels or exhaust pipes will not be buses, but mostly enterprises’ cars; The new car will not be a bus.

　　Several suspicious vehicles were encountered, and they were all ruled out after inquiry. The reporter found that the unannounced interview team was always alert to the private use of buses. "We all have occupational diseases. Sometimes on the way to and from work, when we encounter suspicious vehicles, we will follow up, and at the same time call our colleagues to report the car number and inquire whether it is a bus or a private car." The members of the unannounced interview team said.

　　Lao Li, the leader of the unannounced visit team, said that a new trend of "four winds" is that private cars are publicly owned and public oil is privately added. These situations are difficult to find only by unannounced visits, and must be combined with clear observation, and can be found by auditing accounts and collecting surveillance videos of gas stations.

　　As we were about to return to Dongying city, a car painted with the words "administrative law enforcement" passed by us. The inquiry system showed that it was the car of Guangrao County Environmental Protection Bureau.

　　"Keep up!" Lao Li, the leader of the unannounced visit team, ordered. At an intersection, the car stopped. "Was it discovered?" The car of the unannounced interview group continued to move forward, crossed the intersection, turned around and observed it, and found that the car turned right into a village. The unannounced interview team followed into the village, and found suspicious vehicles stopped in front of a farmer at the intersection, opened the trunk, and everyone immediately dispatched to observe and collect evidence from different angles.

　　The reporter also pretended that passers-by approached the car and looked inward from the open door of farmers. There is a boiler in the yard. Some people are holding notebooks and some are taking pictures. It turns out that this is the environmental protection department supervising law enforcement.

　　Dianxue inspector gift shop

　　Nearly two days later, the unannounced interview team decided to go to a key inspector in front of an aquatic product store. This aquatic product store is a well-known gift shop in Dongying. Before the introduction of the eight regulations, some departments and units distributed benefits and welcomed them, and bought more from here. When it comes to holidays, the traffic here is packed.

　　There are three or four cars in front of the aquatic products store, and people are constantly carrying various items from the store to the cars, but after inquiry, they are either personal vehicles or corporate vehicles.

　　Lao Li, the reporter and the leader of the unannounced interview team, went around the bus stop opposite the aquatic product store, sat on the bench of the bus stop, pretending to wait for the bus, but his eyes were on the vehicles patronizing the aquatic product store from time to time.

　　After squatting for more than an hour, I didn’t get anything, so I decided to go into the store to explore. When I entered the store, I pretended to be a guest asking questions, but I always paid attention to the guests who came in. At this time, two young people wearing light-colored shirts and dark trousers entered the store, "like government officials." The two men asked the seller for a business card and agreed to pick up the goods at 6 o’clock tomorrow morning. Lao Li followed the door and remembered their license plates.

　　After investigation, this is the car of a local private enterprise. According to the analysis of the members of the unannounced interview team, there are thousands of employees in this enterprise. If welfare is given to employees, it is impossible to take delivery of goods, and only bills of lading can be issued. Pick up the goods at 6 o’clock, probably giving gifts early to avoid people’s eyes and ears.

　　"As long as you keep up with the car where they pick up the goods and see where the gifts are sent, you may get something." Lao Li, the leader of the unannounced interview team, arranged for the personnel to go to the gift shop at 6 o’clock the next day.

　　After just two days of unannounced visits, the harvest was full. A deep feeling is that discipline inspection cadres are not only sentries to protect the security of national poverty alleviation funds, but also supervisors to build the style of cadres. Their dedication to their duties has brought a breeze to the society.

 

  Folding screen has become another innovative attempt of notebook computer terminal form.

    "After opening and closing, the screen is flat as a mirror, and the picture seems to flow with a three-dimensional effect. The virtual keyboard on the screen is smooth to touch, and it can be presented in different forms such as book, computer, flat and upright …" At the new display innovation exhibition of the 2022 World Display Industry Conference, the reporter’s eyes were attracted by the first 17.3-inch ultra-large folding OLED notebook product exhibited by BOE, which brought more shock than the folding screen mobile phone.

    Folding screen notebook computer is not only another milestone product in the field of flexible OLED display, but also another innovative attempt in the form of notebook computer terminal, which brings more interaction possibilities for office and entertainment. Since Lenovo launched its new products in 2020, and Lenovo updated its second-generation products and ASUS launched its new products in the second half of this year, the popularity of folding screen notebook computers has been rising. Whether this category that breaks the boundary of vision is a dazzling enterprise skill or a long-term layout with profound meaning is unknown, but the era of folding large-screen display is accelerating.

    Folding into the era of big screen

    In October 2020, Lenovo officially released the ThinkPad X1 Fold, the world’s first notebook computer with folding screen, which was quite epoch-making at that time when the folding screen mobile phone had not yet opened the market. The folding screen of this product is made up of five layers of screens stacked, and with the hinge design of folding shaft, it has passed the durability test of opening and closing for more than 30 thousand times.

    In October this year, Lenovo released a new ThinkPad X1 Fold 2022 product. Compared with the first generation product, the biggest change this time is the use of a drop-shaped structural hinge design. Through the movable inner and outer double-layer skeleton design, the shear stress generated by the cross section during folding is greatly offset, so that the screen can still be kept as flat as a mirror after repeated opening and closing. It also achieved "evolution" in the thickness of the fuselage, which was only 17.4mm thick after folding.

    However, the folding screen notebook computer product is not exclusive to Lenovo. Asustek also launched a folding screen notebook Zenbook 17 Fold on August 31 this year. From the product form, there is not much difference between Lenovo and Asustek’s folding screen. The main difference is the screen size, folding form, hinge and other details. Subsequently, ASUS released the Lingyao X Fold product at the autumn new product launch conference in September. The 17.3-inch flexible OLED screen can be bent from the middle to two 12.5-inch screens, and the 180 precision hinge design supports free hovering, which can realize 6 kinds of use forms. The fuselage is as light as about 1.5kg, and the thinnest part is about 8.7 mm. Plus the folding ability, it can be easily carried in a bag.

    At present, the price of the above products is about 10,000 to 20,000 yuan. It is reported that Dell, Hewlett-Packard and Samsung are also increasing research and development, and Apple is also paying attention to the research and development of 20-inch folding screen notebook computers, which proves that head manufacturers are optimistic about the folding screen notebook computer market.

    Canalys, a market research organization, told reporters that there are few participants in the market now, but the equipment available has proved to be reliable. Folding screens are expected to increase dramatically in the next few years. The main driving factors behind the development of such devices are that people tend to use larger screens, and people constantly switch tasks and roles during work and leisure. Folding screen laptops make people not have to switch back and forth between different tools.

    The development of folding morphology is relatively slow.

    Different from the problem of screen creases that people were most concerned about at first, notebook computer products have larger screen size, wider rotating shaft and larger bending radius in the folded state, and the technology is gradually mature, so the problem of screen creases is not the most obvious.

    The reporter learned that the 17.3-inch flexible OLED screen of ASUS Zenbook 17 Fold has a bending radius as low as 5mm, which ensures that the screen is light and thin, and makes the screen flat as a mirror in the unfolded state. The screen adopts a new generation of composite cover plate solution, which improves the mechanical properties of the screen, greatly improves the impact resistance of the screen while taking into account the size upgrade, and makes the durability get a breakthrough upgrade. At the same time, in terms of screen performance, the screen ratio is as high as 95.87%, which supports touch mode and is compatible with active pen function.

    Even though the technology of folding screen mobile phone has been polished, the folding screen technology used in notebook computers has taken a little detour, but the challenge of low yield and high cost still exists.

    Li Yaxuan, research director of IT Division of Sigma Intell, told reporters that the development of folding forms in notebook computers is still very slow, the market scale is very small, and the market penetration rate is only 0.02%. Looking forward to the future, folding screens will continue to develop in the medium-sized market, but it is estimated that by 2025, the penetration rate of folding screens in the notebook computer market will only reach 0.12%.

    It can be seen that although the main brands continue to lay out folding screen notebook computer products, folding screen products are still difficult to become an important development direction in the short to medium term, and most of them are concept products or limited products.

    Folding still has a long way to go.

    The reporter summarized the feelings of buyers and experiencers of folding screen notebook computers, and found that people agreed that folding screen design is indeed a path worth exploring, but there is still room for improvement in system stability and functional adaptation of different folding forms, and there is still a need to create bright spots in product volume, battery life, performance and portability.

    Canalys, a market research organization, believes that folding screen notebook computers need to go through a development process, such as the adaptation of unconventional screen keyboards, the design of new screen hinges, more mature customized new operating systems, multi-tasking functions, CPU and GPU performance, and longer battery life. In addition, how the traditional software and operating system match these devices in different usage modes, and whether the devices can be seamlessly switched between different modes.

    "Project Athena" is another major project for notebook evolution announced by Intel after "Ultrabook", which will guide a new round of changes in the notebook computer industry in the next few years, and the direction of changes is mainly reflected in six dimensions: immediate response, performance and responsiveness, artificial intelligence performance, battery life, connectivity and shape design.

    According to the industry, the "Athena Project" included folding screen laptops and began to manufacture chips specially designed for these devices. The reporter learned that Intel has recently introduced the Hybrid Lakefield processor suitable for folding screen notebook computers. By stacking memory, CPU and graphics chips with each other, these chips are provided in smaller packages, so that manufacturers can design equipment with smaller and more interesting shapes.

    In addition, Microsoft is developing its Windows 10X operating system to run seamlessly on dual-screen computers and folding-screen laptops.

    Chen Shuxin, assistant research director of IDC China, told reporters that in the short term, the use scenarios and corresponding crowds of folding screen notebook computers are still relatively few, and the price is relatively high, which is still in the testing stage, but it can give consideration to portability and large screen, and there is still a certain development prospect in the future, mainly relying on the exploration of future use scenarios, the price can be lowered, the interaction of folding screens and software problems, and there is still a long way to go. (Reporter Lu Mengqi)

From Johns Hopkins Hospital to xuanwu hospital of Capital Medical University, from an excellent medical expert to an outstanding academic leader; For the first time more than ten years ago, he represented the cutting-edge technology of functional encephalopathy treatment.The technology of "Cell Knife" was introduced from the United States to China, which greatly improved the efficiency of surgical treatment of Parkinson’s disease. After the magical "Cell Knife" treatment, the muscles of thousands of patients in China stopped shaking and stiff, and their lost ability to live and work was restored.

He is Li Yongjie, director of functional neurosurgery at xuanwu hospital of Capital Medical University, with China on his head.The halo of the first person in the "cell knife" should be refined into a "scientist doctor".

Go out and see different scenery.

Li Yongjie was born in last century.60An intellectual family in the s.1979In 2008, my mother said, "It would be nice to have a doctor in our family, so you should study medicine!" " Let Li Yongjie accompany medicine for a lifetime.. heTake the first place in the school and get into Beijing Medical College.,After graduation, he chose to study under the famous neurophysiologist Professor Qiao Jiantian for postgraduate study.1991In 2000, he got a doctor’s degree in medicine and stayed in the affiliated hospital of Shanxi Medical University.

Everything seems to settle down in this way, but the more professional knowledge grows, the more clearly Li Yongjie feels that his vision is narrow. Can’t persuade to give up the dream that I haven’t forgotten in my heart.— — When going abroad, you should go out and feel the different scenery outside.1994In the summer of 2008, Li Yongjie came to the Department of Neurosurgery of Johns Hopkins Hospital to do postdoctoral research. Here, Li Yongjie approached the international forefront of microelectrode-guided stereotactic neurosurgery at that time, and the stable, long-term and immediate surgical effect deeply attracted him.

He still clearly remembers a female patient with primary tremor from Maryland. It was a thalamototomy that day. After the brain was accurately located, the damage began. Within a few seconds, the severe tremor of the patient’s right hand disappeared. When Li Yongjie asked her how she felt, she didn’t say a word, staring at her hand for a long time, and her eyes suddenly burst into tears:“ oh,it stopped. Look,after 10 years! Oh,my God! "(Oh, it stopped.10Years, my god.!）。 That is, from then on, Li Yongjie realized that his attention and interest were converging on stereotactic technology.

In those days, he was fascinated by reading monographs and documents on stereotactic neurosurgery and devoted more and more energy to clinic. Every operation day, it must besixGet up at 8 o’clock, he eats breakfast while driving, in the morning.sevenArrive at the hospital before o’clock.CTRoom. As soon as the patient arrives, help to install the stereotactic headstock and observe it.CTPositioning, and then aboutfive～sixIntraoperative electrophysiological function localization in hours. In addition, Li Yongjie also tried his best to find time to go to the ward to observe the patients after operation, and to understand the relationship between the surgical effect and the accuracy of intraoperative positioning, as well as the direction of improvement in the future … … Do these "extra jobs" wholeheartedly.

1995yearthreeIn May, Li Yongjie stared at the world-famous California through the pictures broadcast on TV.Loma LindaNeurosurgeon, University Medical CenterRobert 　P．IaconoThe professor operated on a patient with Parkinson’s disease with a "cell knife". With his skills in neurophysiology, Li Yongjie noticed a detail on the TV screen — — Intraoperative electrical signal noise is too high. Li Yongjie concluded that the setting of electrophysiological system may be unreasonable, which is not suitable for the operating room environment interfered by high-frequency electrotome and needs better shielding. That night, he wrote toIaconoProfessor, frankly talked about his views on technical improvement. This bold move has caused Li Yongjie toIaconoThe professor’s attention, quickly replied to his letter, and sent a job invitation. Li Yongjie finished his postdoctoral study ahead of schedule with excellent results, and shouldLoma LindaThe invitation of the University Medical Center came from Maryland on the east coast of the United States to Southern California on the west coast, and devoted himself wholeheartedly to clinical treatment.

In this way, Li Yongjie approached the international forefront of microelectrode-guided stereotactic neurosurgery at that time, commonly known as"Cell knife" technology. He was deeply shocked and impressed by the "cell knife" when he witnessed countless successful operations and witnessed too many Parkinson’s patients who stood up again from their wheelchairs.

Return to the motherland to sow the ideal seeds

At the beginning of coming to the United States, Li Yongjie’s goal was to be a neurosurgeon. Because in the research of basic medicine, China has not been able to keep up with the advanced level in the world in many aspects, and he hopes that he can do his bit to change this situation. But withWith the application of "Cell Knife", Li Yongjie found that since the advanced technology was in front of him, wouldn’t it be a more effective shortcut if he could master it and use it to serve the motherland?

1998In, Li Yongjie resolutely returned to China. Speaking of this work for more than 10 years, Li Yongjie smiled faintly. "Cell knife was only a few years ago, and we have already begun to use more cutting-edge technical means to treat more diseases." Li Yongjie is constantly thinking about the way forward: China has introduced many advanced technologies from the world, but after a period of time, it has been left behind by the world. The reason is very simple. Without the corresponding mechanism of technological innovation and progress, the old capital of advanced technology has been eaten up, and naturally it has fallen behind.

Parkinson’s article"Fish" will be eaten up one day, and it is necessary to weave a net for "fishing". The surgical treatment of Parkinson’s disease is not limited to pallidotomy and thalamototomy, and the indications of surgical techniques are not limited to Parkinson’s disease, a movement disorder. Li Yongjie’s goal for himself is to be a scientist-type doctor: "Not a simple doctor, but to do research and innovation, to have a scientist’s mind, and what he makes is not commonplace".

Building "China Team" of Functional Neurosurgery

Among many patients, there are countless families who have traveled all over the country to see their families. Every time I meet such a doctor, Li Yongjie’s heart is very heavy. After several considerations, Li Yongjie put forwardThe concept of "terminal". "I hope I can tell patients not to go to the hospital in a hurry. It can’t be solved here, and there will be no better way elsewhere." Li Yongjie hopes to give these patients a belief and make them feel more at ease. Li Yongjie knows very well in his heart that if patients and even colleagues really agree with their concept of "terminal station", they must expand the connotation and extension of functional neurosurgery and weave the net of "fishing" bigger and denser.　

Li Yongjie led his team to keep track of the latest development of functional encephalopathy in the world, improve technical methods, improve the level of treatment and expand the scope of treatment.1999yearthreeIn May, the Institute of Functional Neurosurgery successfully treated Parkinson’s disease with subthalamic nucleus destruction technology, and in the same year, it also developed deep brain stimulation technology (brain pacemaker therapy) to treat Parkinson’s disease.1999yearfiveIn June, the first operation of generalized torsion spasm was successful.1999In the second half of 2006, the first operation of spastic torticollis, chorea and Tourette’s syndrome was successful one after another.

After creatively expanding the scope of surgical treatment to other dyskinesia diseases, Li Yongjie began the work of surgical treatment of epilepsy and pain, which has been extended to.30A variety of functional encephalopathy. With the increasing fame, Li Yongjie’s concept of "terminal" has been recognized by more and more people, and there are countless patients who come here.

Zhang Guizhong is a patient with Parkinson’s disease.11In 2000, he always relied on drugs to control his illness, but with the development of his illness, his trembling became more and more serious and he could not take care of himself. The side effects of drugs are getting bigger and bigger, and he can only stay in bed after taking drugs. The son who joined the army was forced to leave the army and go home to take care of his father. Director Li Yongjie performed deep brain stimulation surgery for him, successfully implanted a brain pacemaker, and his condition was well controlled. When Zhang Guizhong, who had been trembling for many years, walked out of the ward smoothly, his family shed tears of joy.

Now,The more patients are treated, the more Li Yongjie feels that even if he has great skills, the number of people who can be treated is extremely limited. Only by creating a world-class functional neurosurgery."China Team" can benefit more patients. So he focused on building a world-class functional neurosurgery "China Team". When he chooses a "team player", he has a high demand for character. "The most fundamental thing is that he must be a good man, be honest and have a good view of right and wrong. Without kindness, he will not treat his colleagues and patients well; Without cooperation and integrity, there will be no team spirit. "

Li Yongjie said that to be a trustworthy doctor, the first thing is"Benevolent people love others" and have a heart of kindness. He often tells himself to be in awe of the brain tissue that has evolved under the scalpel for millions of years. Over the years, he and his team have worked hard to create and practice this concept, so that patients can get world-class treatment, the most humanized service and the most determined psychological support.

At present,functional neurosurgeryalreadyIt has mushroomed in major hospitals all over the country, benefiting many patients with functional diseases of nervous system, and making functional neurosurgery take root in China, keeping pace with the world and even surpassing the world’s development level. (Source: National Health Planning Commission)

　　At present, there are less than two months left before the postgraduate entrance examination, and the Q group of college students is also increasingly prosperous. Postgraduate students have gone online to seek their own "online home". There are outstanding graduate students in the group and postgraduate institutions to escort candidates.

　　These research groups seem to be isolated coordinate points in the quadrant, but in fact they quietly form a circle. In addition to colleges and universities to build groups for students applying for the exam, there are also "same-city examination and research groups" used by students from various cities to urge each other to learn. In addition, a series of ancillary products have been derived, such as "PubMed Dating Group", "PubMed Parents Exchange Group" and "PubMed Tourism Group", which are fully functional.

　　In the groups spontaneously formed by college students, whether it is postgraduate entrance examination, online games, entrepreneurship, idolize, writing, etc., different Q groups play different functions, always providing college students with opportunities to obtain information and get to know each other, and forming different forms of network ecological circles.

　　Different from the WeChat group that joins by scanning code and inviting friends, Q group can find relevant "tribes" nationwide only by inputting keywords, and it is more flexible in the number of people. It is reported that the maximum number of WeChat groups is 500, and after opening the maximum limit of 2,000 for QQ groups, the number of QQ groups was lifted to 5,000 in 2017, which can be called the "re-expansion" of Q groups and also extended the network ecosystem of students.

　　However, compared with the situation that primary and secondary schools only stay in "class group" and "learning data group", the Q group ecosystem of college students is undoubtedly more complex and diverse.

　　College Students’ Entrepreneurial Groups: Rising "Coin Speculation"

　　In the past, college students’ entrepreneurial groups generally only included "part-time group", "project group" and "investment and financial management group", which was one of the channels for college students to obtain certain living expenses. However, some emerging economic hotspots will largely break the conventional model of entrepreneurial groups.

　　"We are all a group of paranoid college students, but delusion can also become a reality. The blockchain has given us a good enough opportunity. Do you believe it? Just come in! " The introduction of a college student’s entrepreneurial group is quite provocative.

　　Like this, there are countless emerging college students’ blockchain entrepreneurial groups since 2017. As it is advertised, some college students join the group in order to attract partners to do investment projects, while others are to "speculate" and "mine" in partnership. Similarly, they all focus on the most popular hot areas in the entrepreneurial circle in the past year or two. For example, Chen Sifan from Ningxia Normal University said, "If 2017 is the first year of blockchain technology, 2018 will be an outbreak year, and I definitely want to seize this opportunity to make money."

　　In the early stage, the information forwarded by the group was nothing more than all kinds of "potential" digital currency in the eyes of group friends — — Which digital currency is about to go online, how much it will cost, and how much it will earn a month later, all of which are the topics of their daily discussion. As a financial major, Kelvyn Young started a lot of digital currency, and most of the investment amount came from his online loan and part-time job. "I always wanted to hold my favorite currency for a long time, but I sold it every time I was in a hurry to use money. Generally, I couldn’t hold it for a month."

　　Kelvyn Young has joined four groups in order to attract colleagues and organize teams to speculate in coins, but one group after another has been "abolished", and the groups have gradually been screened by advertisements such as Tmall and Meituan coupons. Similarly, many entrepreneurial groups eventually become "advertising groups" or "pyramid schemes".

　　In the interview, the reporter found that fraudulent information with virtual currency as the gimmick frequently appeared. For example, the relevant responsible persons mostly endorsed the "virtual currency" credit by fictional various auras, promised high investment, and used WeChat group or QQ group to forward and promote publicity, and "brainwashed" investors. It is reported that in addition to the possible risks of virtual currency itself, there is still a kind of risk, that is, illegal fund-raising and online pyramid schemes under the banner of "virtual currency" investment. This requires college students who "speculate" to be more vigilant.

　　Certificate strategy group: "adding material" or "injecting water" for resume

　　Similar to the entrepreneurial group that shares blockchain information, the certificate raiders group shares the information and raiders of college students’ competitions nationwide. Enter keywords in the QQ search box, and there are no fewer than 100 such raiders groups, with an average of about 500 people in each group, and the members are mainly college students.

　　Chen Yu, the owner of a certificate strategy group and a student of Zhuhai College of Jilin University, told the reporter that most of them are VIP strategy groups that need to pay to join the group, and she just set up a completely public Q group to give back to the support of a group of "fans" and share the recent college student competitions held all over the country for free.

　　Carefully distinguish, the events shared by these groups also have high and low points.

　　In a certain group, group friends refer to the certificate raiders group as "award group" for short, and define the awards certified by official institutions as "hard core awards", which means that the awards have high gold content and can be obtained. On the contrary, they described some local competitions sponsored by non-governmental organizations as "water injection".

　　But no matter what kind of competition, the title is crowned with the name of "College Student Competition", which is aimed at college students from all over the country. If we don’t go deep into it, most of these "water injection" competitions can be noted as "national college students’ competitions", thus "rising" to national competitions in the resumes of the contestants.

　　Qiguang Wang, a 17th-grade student who has just won the "Excellent Award" in an advertising contest for college students, said frankly that the competition he participated in was not certified by the official organization. "But students in ordinary colleges like me can only rely on these seemingly national competitions without a national competition certificate, which is actually very ‘ Water injection ’ The competition award for the resume ‘ Add some materials ’ Otherwise, there is nothing to write. "

　　The administrator of a strategy group told the reporter, "Most of the strategies we have compiled are the strategies for lower-level rewards in some competitions. If we want to participate in some difficult competitions or get better rankings and awards, it is really not something that our 5 yuan VIP group can solve."

　　Game group: not only "open black" and "eat chicken"

　　Among the Q groups where college students are concentrated, game groups are the most popular and common.

　　Netizen "Ono" is 30 years old this year, but he is a college student the glory of the king game group owner. Talking about the original intention of building a group, he said that colleagues and friends around him hardly play games, and it would be naive to invite people to play together. "Fortunately, it is a good thing to start a college student game group, just like the younger ones ‘ Open black ’ " .

　　Among all the game groups, the "Open Black Group" which brings together the glory of the king fans and the "Eat Chicken Group" which is a Jedi survival player are undoubtedly the most popular. In a group of 4371 college students, group friends are active in the group for almost 24 hours, and every day, they organize "masters" to lead the team to "open the black".

　　It is also a game group, and the national college students’ "Sudoku" (note: a logical game) group is slightly lonely. The group is full of pictures of nine squares, and it will take at least half an hour for someone to reply to a difficult problem. However, Deng Ziyao, a sophomore, is very grateful to his Sudoku group. She just joined the group last year, and now she has reached the level of participating in the national college students’ Sudoku competition. She attributed this obvious progress to the difficult problems and problem-solving ideas shared by Sudoku group every day, which provided her with advanced channels for being a "novice".

　　Perhaps different from what you think, many college students’ game development groups also show the painting style of "serious". Although they are called games, they focus on professional fields such as game planning, art design, model and level making. There is no sign of "opening the black" in the group. As long as irrelevant information such as advertisements and questionnaires appear, group members will be immediately banned for 72 hours. "Because what we want to form is a team with feelings, if you are the one." Group owner Jiao Ke said.

　　"Hi" is online, don’t be "cold" offline.

　　Q groups such as study group, game group and strategy group can be said to be a microcosm of college students’ extracurricular activities. In this virtual and anonymous space, the community trend of college students from all tribes is becoming more and more obvious, forming a huge network ecosystem of college students.

　　In this regard, Duan Zheng, a counselor of China Institute of Labor Relations, believes that the expansion of QQ group functions has produced new cultural phenomena. Lower entry threshold, larger communication platform and easier real-time interaction make post-95 college students happy to "find a home" here and seek a sense of identity in the acquisition and transmission of group information.

　　More specifically, Li Weihua, a teacher at the Center for Positive Psychological Experience of Beihang University, believes that communication on the Internet is more realistic, and the cost of time and space is lower, as well as the cost of emotional and psychological resources. For example, "When communicating face to face, the reaction of the person in front of me has a great influence on me. At this time, I have to think about this person’s real thoughts quickly and make appropriate responses, which requires courage, communication skills and psychological construction. In addition, the anonymity of the virtual world will also give the parties a lot of psychological protection and be relatively more free. "

　　But it has also caused many people’s concerns — — With the younger users of social media such as QQ group, these "online aborigines" are more comfortable in interpersonal communication, but in real communication, they are stumbling, timid, and even bored and afraid of real social communication, preferring to "open their hearts" to the cold screen. As Duan Zheng often sees, students with smooth communication in QQ group often fall into "social fear" in reality, and online personality is very different from offline personality.

　　In this regard, Duan Zheng believes that university teachers should pay attention to students’ ideological trends and hot topics on the Internet, strengthen guidance, and remind students to choose carefully when participating in group culture to avoid causing "social fear". (At the request of the interviewee, Chen Sifan, Chen Yu and Jiao Ke are all pseudonyms.)

　　The report of the 19th National Congress of the Communist Party of China, made by the Supreme Leader, made a new statement on the current major social contradictions in China, pointing out that "Socialism with Chinese characteristics has entered a new era, and the major social contradictions in China have been transformed into contradictions between the people’s growing needs for a better life and the unbalanced development". Correctly understanding and grasping this new major political thesis is of great significance for profoundly understanding the new historical orientation of China’s development and implementing a series of major strategic arrangements of the CPC Central Committee with the Supreme Leader as the core on building a socialist modernization power under the new era conditions and realizing the Chinese nation’s great rejuvenation of the Chinese dream.

　　Scientifically analyzing and clearly grasping the main social contradictions in China is an important prerequisite for the Party to formulate the correct line, principles and policies.

　　Grasping the key points to drive comprehensive work is the requirement of materialist dialectics, and it is also the methodology that our party has always advocated and adhered to in various periods of revolution, construction and reform. Comrade Mao Zedong pointed out: "The study of various imbalances in contradictions, the study of major contradictions and non-major contradictions, major contradictions and non-major contradictions has become one of the important ways for revolutionary parties to correctly determine their political and military strategic and tactical policies, which all communist party people should pay attention to." To successfully promote the cause of the party and the state, we must accurately grasp the main contradictions in our society.

　　This is not only a simple philosophical truth, but also a profound conclusion drawn from summing up the party’s history. During the period of the new-democratic revolution, our party correctly analyzed the overall situation of social contradictions in semi-colonial and semi-feudal China, formulated the general line of the new-democratic revolution and a series of principles and policies, and won the victory of the new-democratic revolution. After the founding of New China, especially after the establishment of China’s basic socialist system, the Eighth National Congress of the Communist Party of China clearly pointed out: "The main contradiction in China is already the contradiction between the people’s demand for the establishment of an advanced industrial country and the reality of a backward agricultural country, and the contradiction between the people’s need for rapid economic and cultural development and the current situation that the economy and culture cannot meet the people’s needs." This formulation was in line with the reality of our country at that time. However, due to complicated social and historical reasons, this correct conclusion did not persist. After the Third Plenary Session of the Eleventh Central Committee of the Communist Party of China, our party scientifically analyzed the main contradictions in the primary stage of socialism in China, further refined the formulation of the Eighth National Congress of the Communist Party of China, and put forward that "the main contradiction in our society is the contradiction between the people’s growing material and cultural needs and backward social production". This has provided important guidance for us to deploy the overall work of the party and the state. In the past 40 years of reform and opening up, it is precisely because our party has formulated and adhered to the correct line, principles and policies according to this major contradiction that China’s socialist modernization has made great achievements.

　　History fully shows that the smooth development of the cause of the party and the state is closely related to whether we can accurately understand and grasp the main social contradictions with the changes of social and historical conditions and whether we can formulate correct political lines and strategic strategies on this basis. It is a successful experience for our Party to consciously apply Marxist contradiction theory to analyze and solve specific problems of China’s revolution, construction and reform by insisting on proceeding from the actual situation of our society, keenly grasping the main contradictions among many social contradictions and contradictions, and consciously deploying the overall work of the Party and the country around the main contradictions.

　　The new expression of social principal contradiction is determined by the objective reality of our country at the present stage.

　　The report of the 19th National Congress of the Communist Party of China made a new statement about the changes of the main social contradictions in China, which was based on the new historical orientation of China’s development when Socialism with Chinese characteristics entered a new era, and had sufficient realistic basis. The report pointed out: "China has stably solved the problem of food and clothing for more than one billion people, achieved a well-off society on the whole, and will soon build a well-off society in an all-round way. The people’s needs for a better life are increasingly extensive, which not only puts higher demands on material and cultural life, but also increases demands on democracy, the rule of law, fairness, justice, security and the environment. At the same time, China’s social productivity level has improved significantly on the whole, and social production capacity has entered the forefront of the world in many aspects. The more prominent problem is that the development imbalance is insufficient, which has become the main constraint to meet the people’s growing needs for a better life. " This incisive exposition profoundly reflects the new changes in China’s social production and social needs. The original statement about "the contradiction between people’s growing material and cultural needs and backward social production" can no longer accurately reflect this changed objective reality, so it is necessary to make a new summary.

　　Let’s look at social production first. After nearly 40 years of rapid development of reform and opening-up, China’s social productive forces have improved significantly on the whole, and social productive capacity has entered the forefront of the world in many aspects. The long-standing shortage of economy and supply in China has undergone fundamental changes, and it is no longer realistic to talk about "backward social production". This is a remarkable change.

　　Look at the social needs. With the remarkable improvement of people’s living standards, their yearning for a better life is even stronger. The needs of the people are diversified, multi-level and multi-faceted, and the areas and focus of needs have exceeded the original levels and categories of material culture. Only talking about "growing material and cultural needs" can no longer truly reflect the changed needs of the people. This is also an obvious fact.

　　The above two aspects show that we need to think from the historical position of China’s social development, from the overall situation of the development of the party and the country, from the people-centered development thinking, and make new judgments and expressions on the main contradictions in our society. The key here is to accurately understand and grasp the changing characteristics of the primary stage of socialism in China, accurately understand and grasp the staged characteristics of China’s development, and identify the main factors that affect the satisfaction of people’s yearning, expectation and needs for a better life at this stage. Based on a comprehensive analysis of all aspects, the report of the 19th National Congress of the Communist Party of China holds that the problem of insufficient development imbalance has become the main constraint to meet the people’s growing needs for a better life. Unbalanced development mainly means that the development of various regions is not balanced enough, which restricts the improvement of the national development level. Insufficient development mainly refers to the problem of insufficient development in some places, some fields and some aspects, and the task of development is still very heavy. At present, China’s unbalanced development is not fully manifested in many aspects. For example, from the perspective of social productive forces, China still has a large number of traditional, backward and even primitive productive forces, and the level and layout of productive forces are very uneven. Judging from the overall layout of the "Five in One", it is not enough to promote the development of all aspects of the country and achieve balanced development and full development. From the perspective of regional development between urban and rural areas, the gap in development level is still large, especially the economic and social development of the old and young border poor areas is still relatively backward. From the perspective of income distribution, the income gap is still large, and there are still more than 40 million people in rural areas who have not been lifted out of poverty.There are still many people in difficulty in the city. These problems of insufficient unbalanced development restrict each other and bring many social contradictions and problems. They are the main sources of various social contradictions at this stage and have become the main aspects of social contradictions. We must make great efforts to understand and solve them.

　　The new expression of the main social contradictions in China in the report of the 19th National Congress of the Communist Party of China is the result of adhering to the Party’s ideological line of seeking truth from facts and combining the basic principles of Marxism with China’s current concrete reality. It is also a scientific judgment of emancipating the mind, seeking truth from facts, advancing with the times, seeking truth and being pragmatic.

　　The change of the principal contradiction in our society is a historical change that has a bearing on the overall situation, which puts forward many new requirements for the work of the party and the state.

　　We must have a correct understanding of the changes in the main social contradictions in China, which are historic and have a bearing on the overall work of the Party and the State. We should adhere to the methodology of dialectical materialism and historical materialism, adhere to strategic thinking, innovative thinking, dialectical thinking, rule of law thinking and bottom line thinking, and think from the combination of history and reality, theory and practice, domestic and international, and draw a correct conclusion.

　　First, we must closely follow the theme of the principal contradiction in our society, and the focus should not be shifted. This new expression in the report of the 19th National Congress of the Communist Party of China is about the principal contradiction of our society, not the principal contradiction of our economic development. Therefore, we must think from the historical position of China’s social development, grasp the main contradictions and their main aspects in China’s society in the new era, and our thinking should not be narrow.

　　Second, we must persist in thinking from the standpoint and method of materialism and understand and grasp this important judgment from the realistic social movement. The identification of the main social contradictions in our country should jump out of abstract ideas, state expressions and work requirements, so that the conclusions can stand up and stand the test of practice and history.

　　Third, we must persist in thinking from a global perspective, so that solving this major contradiction will play a leading and guiding role in the development of the cause of the party and the country. The new expression of the principal contradiction in our society in the report of the 19th National Congress of the Communist Party of China is not a purely conceptual change, but must be implemented in all fields, aspects and work. It is necessary to closely contact the key tasks that the CPC Central Committee has focused on since the 18th National Congress of the Communist Party of China, what the Party is leading the people to do at present, the overall situation of social contradictions in China at this stage, the main tasks facing the development of the cause of the Party and the country at present, and the wishes and expectations of the broad masses of the people. It is necessary to coordinate and promote the overall layout of the "five in one" and the "four comprehensive" strategic layout, to implement the new development concept, to promote the development of various undertakings of the party and the country, and to keep pace with the people’s yearning for a better life.

　　Fourth, we must persist in thinking from the long-term development of the cause of the party and the state, and fully understand that this new expression is neither a narrow concept nor a short-term concept, but a time node that aims at achieving the goal of the second century in the middle of this century, and we must take care of the concept of a long historical period; Fully understanding this new expression not only has strong practical pertinence and work orientation, but also has strong historical adaptability and time tension.

　　We must correctly understand the great significance of the changes in the main contradictions in our society and the new requirements for the work of the party and the state. In accordance with the requirements of the report of the 19th National Congress of the Communist Party of China, "on the basis of continuing to promote development, efforts should be made to solve the problem of insufficient development imbalance, vigorously improve the quality and efficiency of development, better meet the growing needs of the people in economic, political, cultural, social and ecological aspects, and better promote the all-round development of people and the all-round progress of society".

　　The change of the principal contradiction in our society has not changed our judgment on the historical stage of our socialism.

　　Changes in major social contradictions will have a wide and profound impact on China’s overall development, and we must fully grasp them. The report of the 19th National Congress of the Communist Party of China pointed out: "It must be recognized that the changes in the main contradictions in our society have not changed our judgment on the historical stage of socialism in China, the basic national conditions that China is still in the primary stage of socialism for a long time have not changed, and China’s international status as the largest developing country in the world has not changed. The whole party must firmly grasp the basic national conditions of the primary stage of socialism, firmly base itself on the greatest reality of the primary stage of socialism, firmly adhere to the party’s basic line, the lifeline of the party and the country, and the happiness line of the people, lead and unite the people of all ethnic groups throughout the country, focus on economic construction, adhere to the four cardinal principles, persist in reform and opening up, be self-reliant, and work hard to build China into a prosperous, strong, democratic, civilized, harmonious and beautiful socialist modern power. "

　　We should correctly understand and grasp the following points on the relationship between the changes of major social contradictions and the primary stage of socialism in China.

　　First, the primary stage of socialism in China is the underdeveloped stage of socialism, and the level of economic development plays an important role, so we must persist in taking economic construction as the center. At the same time, we should also realize that the level of economic development is not the only condition that determines the primary stage, but should be linked with the overall level of social development. The report of the 15th National Congress of the Communist Party of China has made a profound exposition on this issue. This shows that our party’s understanding of the primary stage of socialism has never been viewed solely from the level of economic development, but from the overall development of the whole socialist cause, involving productivity and relations of production, economic base and superstructure, material civilization and spiritual civilization, and economic construction, political construction, cultural construction, social construction, ecological civilization construction and party building.

　　Second, the primary stage of socialism is a long historical process. Just as many aspects will change, in this long historical process, the main contradictions in our society will inevitably change with the development of society. But these changes do not mean that the basic national conditions in the primary stage of socialism have changed, but that they have changed in the historical stage of the primary stage of socialism.

　　Third, to know and understand the changes of the main contradictions in our society, we must accurately grasp the changing characteristics of the primary stage of socialism. We should adhere to the Party’s theory of the primary stage of socialism, while continuing to promote economic development, we should better solve various problems in our society, better realize the all-round development of various undertakings, better develop the cause of Socialism with Chinese characteristics, and better promote the all-round development of people and society.

　　In a word, it is very important to accurately understand the materialist dialectics of "change" and "unchanged" when studying the new expression of the main contradictions in our society in the report of the 19th National Congress of the Communist Party of China.

　　The profound exposition in the report of the 19th National Congress of the Communist Party of China about Socialism with Chinese characteristics’s entering a new era and the changes in the main social contradictions in China is an important content of the Supreme Leader’s Socialism with Chinese characteristics Thought in the new era. This great theoretical innovation is a further understanding of communist party’s ruling law, the law of socialist construction and the law of human social development, and a great contribution to scientific socialism. Just as it is of great significance for the Eighth National Congress of the Communist Party of China to make a judgment on the principal contradiction in our society, the 19th National Congress of the Communist Party of China will certainly play a realistic and long-term guiding role in the development of Socialism with Chinese characteristics’s cause in the new era and the ultimate realization of the Chinese dream of the great rejuvenation of the Chinese nation.

Update on November 16th: Gree Electric announced today that the company received a written notification letter from Zhuhai Yinlong on November 16th, 2016, and was told that the adjusted trading plan was not approved by the shareholders’ meeting of Zhuhai Yinlong, and Zhuhai Yinlong decided to terminate the transaction based on the voting results. In view of this, the company decided to stop planning to issue shares to purchase assets.

So how did Miss Dong think about it three months ago?

———————————— (Update the demarcation line)

Persuaded Wang Jianlin to advertise, challenged the Japanese rice cooker under the "artisan spirit", and gambled with Lei Jun’s 1 billion and angered the "Miss Dong" Dong Mingzhu who broke Gree’s mobile phone yesterday (August 18th) announced:Gree enters the automobile industry.!

According to China Securities Network, Gree Company issued 35 announcements last night after half a year of suspension, occupying the "bulletin board" of Shenzhen Stock Exchange. In addition to the fixed increase, employee stock ownership and interim report, the most interesting thing is the acquisition of Zhuhai Yinlong for 13 billion yuan.

"Gree Electric plans to issue 835 million shares to all 21 shareholders, including Sunshine Life Insurance, Beiba Media and Zhongyeda New Energy, to purchase 100% equity of Zhuhai Yinlong held by the above-mentioned objects at an issue price of 15.57 yuan/share. In terms of valuation, taking December 31, 2015 as the benchmark date, Zhuhai Yinlong’s book net assets were 3.878 billion yuan, with an estimated value of 12.966 billion yuan, with an appreciation rate of 234.37%. On this basis, since Zhuhai Yinlong received an investment of RMB 90 million from shareholders after the benchmark date, the total equity value of its shareholders increased to RMB 13.056 billion. "

Gree’s explanation for the acquisition is:Yinlong has mastered the core technology of lithium titanate battery. The acquisition of Yinlong can help Gree enter the field of electric vehicles and energy storage, and the company’s profitability will be improved..

What kind of company is Zhuhai Yinlong after Miss Dong?

According to official website, Yinlong New Energy, the core of Yinlong New Energy is the new energy industry. The company was industrialized in 2009,In 2010, Yinlong acquired a 53.6% stake in the American listed company Aoti Nano.Become the largest shareholder of Aoti Nano. Through the acquisition of Aoti Nano, we also mastered the production technology of titanium and lithium materials.In 2012, Yinlong acquired Zhuhai Guangtong Automobile., master vehicle manufacturing, batteries, motors, electronic control and charging equipment and other technologies.

Yinlong New Energy has established a lithium battery material as the core toLithium battery, electric vehicle powertrain, vehicle manufacturing, smart grid energy storage system.R&D, production, sales, as one of the new energy closed cycle industrial chain.

Why did "online celebrity" Dong Mingzhu enter the field of electric vehicles with mobile phones and rice cookers?

The electric bus is the tuyere.

Once upon a time, the "cuttlefish" bus became the epitome of many urban buses in China. After off the charts on January 14th, 2013, people’s requirements for energy conservation, emission reduction and environmental protection are getting higher and higher. The "cuttlefish" bus in the city has also attracted attention. With the appearance of electric bus, many cities have found new ways to save energy, reduce emissions and protect the environment. In this context, domestic automobile manufacturers have made great efforts to develop and manufacture electric buses, including BYD, Futian, Yutong and other companies’ products, which have been officially applied, and BYD’s products are also exported to the UK.

Bus is very important in China’s public transport system.According to the data of 2015, the total number of urban buses in China exceeds 500,000, which takes on 60% of urban passenger transport. According to the data of China Automobile Association, in 2015, 340,500 new energy vehicles were produced and 331,100 vehicles were sold, with buses accounting for 17%.Therefore, there is a great market for electric buses.

Zhuhai Yinlong official website shows that by the end of 2015,The company has an annual output of 33,000 pure electric buses, 100,000 sports multi-functional electric vehicles, 620 million ampere-hours of batteries, 5,000 tons of raw materials for lithium titanate batteries and 800MW of energy storage. In 2015, Zhuhai Yinlong achieved 7000 sales orders for new energy vehicles, with a total output value of 10 billion yuan. Among them, 3,189 pure electric buses were produced, and the annual sales volume of pure electric buses ranked seventh in China..

The huge market and excellent technology of Zhuhai Yinlong are the first reasons to promote Gree’s acquisition.

Gree seeks multi-channel transformation

Gree, which started with the production of white goods such as air conditioners, has been very active in the past two years, launching a series of non-white goods such as rice cookers and mobile phones. In May, Dong Mingzhu revealed that Gree’s goal in the future is to build a family-centered energy management system. Gree’s transformation is survival and forced, and the air-conditioning market has shrunk. Gree wants to achieve the goal of 200 billion yuan in five years, and air conditioning alone is far from enough. Although electric buses have been produced by many manufacturers, they are still in the initial stage. Therefore, there is still a lot of room for Gree to acquire mature companies and use Gree’s brand influence for marketing.

In addition to the acquisition of Yinlong, Dong Mingzhu also took this opportunity to carry out the work of employee stock ownership, which is helpful for Gree to retain talents. Dong Mingzhu has expressed his dissatisfaction with his peers’ poaching behavior many times before, and the employees got more real money this time, which stabilized the team’s mood.

According to China Entrepreneur Magazine, Gree took this opportunity to successfully "kill" the barbarian.Dong Mingzhu became the fourth largest shareholder with a shareholding ratio of 1.3%.Who was the original fourth largest shareholder? Qianhai Life Insurance, you know.

When I was a Mercedes-Benz driverless bus, I wrote that Yutong’s driverless bus has been successfully tested on the road. Do you think that in a few days, Sister Dong will announce her entry into the field of driverless buses?

[car home Jiamusi Preferential Promotion Channel] Recently, a large-scale preferential activity was ushered in in Jiamusi area, with the highest discount reaching 45,000 yuan and the lowest starting price adjusted to 200,900 yuan. If you are considering buying FAW-Volkswagen CC, now is a good time to start. Please click "Check the car price" in the quotation form to get a higher discount.

FAW-Volkswagen CC attracts many eyes with its unique front face design. The family-style large-size air intake grille with chrome trim makes the whole front face look more fashionable and dynamic. The body lines are smooth, showing an elegant overall style without losing the sense of strength, which perfectly explains the design concept of Volkswagen.

FAW-Volkswagen CC is famous for its streamlined body lines and dynamic design. The body size is 4865*1870*1459mm and the wheelbase is 2841mm, providing passengers with spacious and comfortable interior space. The side lines are smooth, and the car body is more stable and dynamic from the front wheel track of 1586mm to the rear wheel track of 1572 mm. The standard 245/45 R18 tires and unique rim style not only enhance the grip of the vehicle, but also enhance the overall visual effect.

The interior design of FAW-Volkswagen CC is elegant and fashionable. The center console is equipped with a 9.2-inch touch screen, which supports voice recognition control of multimedia systems, navigation, telephones and air conditioners. The steering wheel is made of leather, which can be adjusted up and down and back and forth manually, bringing excellent grip and flexibility. The front seat is made of leather /Alcantara mixed material, which has heating function and supports various adjustment methods. The rear seats can be laid down in proportion, which increases the flexibility of the interior space. In addition, the car is equipped with three USB/Type-C interfaces in the front row and two USB/Type-C interfaces in the back row, which meets the charging needs of passengers.

FAW-Volkswagen CC is equipped with a 2.0T turbocharged engine with a maximum power of 137 kW (186 HP) and a maximum torque of 320 Nm. With the 7-speed wet dual-clutch gearbox, it provides excellent power output and smooth shifting experience for drivers.

The owner of car home spoke highly of FAW-Volkswagen CC, and thought that the design of the car was perfect, and the excellent chassis adjustment of Volkswagen brand also added a lot of color to its driving experience, which was heavy and advanced, so he strongly recommended this model.

Wuling red MINIEV convertible and GAMEBOY new color models have been officially released.

The official price of MINIEV convertible is99,000 yuan, more expensive than the GAMEBOY 300 km version.32,100 yuan;

GAMEBOY has launched two new color combinations, and the official price is558-69800 yuan, consistent with the models sold.

According to reports, Hongguang MINIEV convertible version is priced at99,900 yuan, GAMEBOY is55800 yuan, Makaron is43,800 yuan, the common national style is32,800 yuan.

Hongguang MINIEV convertible adopts semi-automatic soft top convertible mechanism, and its maximum mileage280 kilometers. This is the cheapest convertible electric car on the market at present.

Among them, Wuling Hongguang MINIEV convertible version has red/black soft top cloth to choose from. It adopts semi-automatic open-close ceiling structure and offers three new colors to choose from: sea blue, emerald and modern black.

Hongguang MINIEV convertible version is equipped with a maximum power of30kW, the peak torque is110N?mMotor, the highest speed is100km/h. The new car is equipped with a lithium iron phosphate battery pack with a capacity of 26.5kWh. The dustproof and waterproof performance of the battery reaches IP68, providing battery heating and intelligent insulation functions. It takes 8.5 hours to charge slowly (20-100%).

The new car size is3059*1521*1614mm, the wheelbase is2010mm. Frameless doors, luminous signs, light-transmitting strips, LED high and low light sources, LED daytime running lights and LED high-position brake lights are adopted.

In terms of safety, it provides driver/passenger airbag, tire pressure alarm, driver’s seat belt unfastened reminder, automatic locking while driving, low-speed pedestrian warning, ABS anti-lock braking and EBD braking force distribution system.

In addition, the Wuling mini EV convertible adopts the form of rear drive, with front McPherson independent suspension and rear three-link semi-independent suspension, and tyre size 145/70 R12.

In terms of functions, the new car supports remote control key+central locking, ramp assist, economy/standard/sport mode, electric window, one-button lifting of window (with anti-pinch function), air conditioning and reversing image of rear reversing radar.

Interior: The new car is equipped with rotary electronic gear shifting, color LCD combination instrument, 7-inch instrument screen, LED reading light, driver/passenger sun visor (with cosmetic mirror) and PVC leather seat material.

It is reported that Wuling has also introduced two new GAMEBOY colors: "lime soda" and "cherry blossom". Users can also choose personalized stickers on LING Club to decorate new cars. Other aspects basically follow the design of the ordinary version.

The new Makaron model will have a more unique design, and the color matching of body painting and rim design will be more fashionable.