On November 27th, the first converter transformer with domestic on-load tap changer independently developed by China was installed in the key project of West-to-East Power Transmission in Conghua, Guangzhou — — Xiluodu DC project has been successfully put into operation from West Converter Station.

The picture shows the Xiluodu DC project from the west converter station. (Photo courtesy of the interviewee)

　　"The on-load tap-changer of converter transformer has achieved a technical breakthrough from scratch and realized the complete localization of industrial chains such as components, which indicates that China has broken through the constraints of this key core technology of high-end power equipment." Feng Wei, deputy general manager of Biotechnology Department of China Southern Power Grid EHV Company, said.

　　China’s eastern and western parts span thousands of kilometers, and the power transmission from west to east needs a long-distance, large-capacity and high-voltage DC project for power transmission. The converter transformer, which weighs more than 300 tons, is used in both the power transmission end and the power reception end of the project. The on-load tap-changer of converter transformer is like an automatic gearbox of a car, and it is used to adjust the voltage, load and current.

　　On-load tap changer is a highly complex and precise equipment. According to Deng Jun, a senior technical expert of China Southern Power Grid EHV Company, the on-load tap changer of converter transformer has more than 1,000 parts, and the switching times are very frequent, reaching more than 6,000 times a year. One switching includes nine processes, each of which involves the precise coordination of more than 400 parts, and the timing coordination of each process is millisecond, and the multi-field coupling of electricity, heat and force is involved in the action process.

The picture shows the installation site of on-load tap changer of converter transformer. (Photo courtesy of the interviewee)

　　Due to the extremely high reliability requirements and difficult manufacturing, this technology has always been in the hands of a few foreign manufacturers, and equipment maintenance is also limited. In case of failure, only imported products of the same model can be replaced, and the order cycle takes 3 to 4 months, which brings challenges to the safety of power operation.

　　Liu Xiangqiang, deputy general manager of China Southern Power Grid EHV Company, told the reporter that after more than two years of hard work, the research team jointly established by China Southern Power Grid EHV Company and upstream and downstream enterprises in the industrial chain has successfully developed a large-capacity converter transformer on-load tap changer with rated capacity of 6000kVA, maximum voltage of 6,000 V and maximum rated current of 1,300 A, and realized the domestic manufacturing of the whole chain of "raw materials-components-complete machine".

The picture shows the installation site of on-load tap changer of converter transformer. (Photo courtesy of the interviewee)

　　The successful operation of this product will not only help to upgrade the industrial chain of high-end electrical equipment in China, but also save costs for engineering construction. According to Liu Xiangqiang, only from the equipment cost estimation, the on-load tap-changer of domestic converter transformer can save nearly 40 million yuan for a new UHVDC transmission project. (Reporter Wu Tao)

Today, Chery Automobile officially announced that the Chery Fengyun T9 Long Life Edition was officially launched. Compared with the models on sale, the biggest change of the new car lies in the upgrade of the transmission system, from single-gear DHT to three-gear DHT, and at the same time, the pure electric cruising range is increased to 210km, providing consumers with more choices.

In appearance, the Chery Fengyun T9 Long Life Edition continues the overall design of the models on sale, and the closed front face highlights the new energy features while retaining the Chery family elements. The new car comes standard with LED headlights with automatic headlights, and some models are also equipped with adaptive far and near lights. The side design is simple, and the hidden door handle is integrated. The body size is 4795/1930/1738mm and the wheelbase is 2770 mm. The design of the rear is layered, and Fengyun English Logo is located under the penetrating taillights.

For the interior, the Chery Fengyun T9 Long Life Edition comes standard with a 15.6-inch central control screen, which integrates multiple functions, while retaining the driving mode switch knob and shortcut keys. In terms of power, the new car is equipped with a combination of 1.5T and 3-speed DHT. The maximum power of the engine is 115kW and the maximum torque is 220N·m； The comprehensive power of the system is 265kW and the comprehensive torque is 530 N m.. It is estimated that the 34.46kWh Ferrous lithium phosphate will have a pure electric cruising range of 210 kilometers.

The emission standards of Chang ‘an Yidong vary according to the model and year. Generally speaking, from 2010 to 2014, the emission standard of most Changan Yidong vehicles is National IV (that is, the European emission standard Euro4); Since 2015, the emission standards of the newly produced Changan Yidong vehicles have reached the national five (that is, the European emission standard Euro 5) standard.

It should be noted that the models in different years and regions may be different. To determine the specific emission standards of specific models, it is best to consult the vehicle manual or contact the customer service of Changan Automobile.

I am very satisfied with the fuel consumption, and it is not used frequently at present, but the fuel consumption is within the acceptable range. High-speed comprehensive fuel consumption: At present, I have run back and forth several times at high speed, and started the sports mode, which is super powerful. I drive more than seven cars in the urban area. I usually go to work, go to the supermarket or something, and occasionally go out to play on holidays. I still yearn for freedom. For this car, it is not too high or too low in our county.

This car is still relatively small. If a big person sits in the back row, the space will be a little insufficient. However, there are very few people sitting in the back row, and occasionally sitting does not affect the space and comfort of sitting in the front row. The seat of this car is designed to fit the skin very well, and it is quite comfortable to sit on, and the hardness is just right. I like its dynamic response. I think it is necessary to drive fast in the city, and don’t think that strong power is not needed in traffic jams. Although it is a 1.4T engine, the power feedback is still very strong, so it is easy to cut in and overtake in traffic jams. If the power is insufficient, I will only be cut in line.

Nowadays, the exterior design is becoming more and more fashionable, and the front face is very impactful. It still belongs to the kind that is very resistant to driving. The black middle net and the logo have a special feeling, and the tail is not too framed. The overall appearance is very round. Personally, I think it is very similar to the interior of the car. Of course, Geely’s gear handle and central control design are basically the same, which makes it difficult for you to see that this is a car that is less than 100,000 yuan. That kind of luxury and enjoyment is really true.

Although I like the appearance and interior very much, all I took out was real money. I thought about buying a car for a long time and finally chose this one after paying attention to many models. The price is really not high. And the configuration is not bad. At the same time, the cost of car maintenance in the later period is not high. On the whole, I think the price/performance ratio is also the biggest highlight of this car. Automatic headlights, automatic locking, electric adjustment of rearview mirror, full-screen HD display, front and rear, keyless entry, large skylight, rear cup holder, voice system, five-year free network and 360-degree image of reversing radar really guarantee safety, and are also very worry-free, making driving feel easier.

The handling of the car is very good, and its throttle is very light, so it has very good sensitivity when driving at high speed, including when cornering. And the chassis is also very stable when driving at high speed, and there is electricity when braking, and the braking distance is also very short. The safety factor of the car is quite high, the comfort of the whole car is good, and the seat is not very soft, so the support is relatively good. This seat will not feel tired when running at high speed for a long time, and this car has been driving for thousands of kilometers now, and it feels that there is no smell in the new car. Normal new cars should have the taste of leather, but this car feels very small. Even if the child sits in the car, it is more reassuring.

This car has these four shortcomings:

First, the storage capacity of the fuel tank is slightly small, only 45L, which is acceptable for friends who usually use a small amount of cars, but for friends who use cars frequently for a long time, they are somewhat stretched, and they have to refuel once a week or so. In addition, if they run a long distance, there are some disadvantages to a small fuel tank with less battery life.

The second is that there is no air outlet in the back row, which is somewhat lacking in design. It is convenient for us to buy a car, and it is also convenient for our families to take a trip, including sometimes bringing some friends, so the family or friends sitting in the back row are not so comfortable.

The third is that there are six speakers in the car, but actually four speakers can be used. Only four speakers in the front row can play audio media, and the two speakers in the back are not available. Driving is boring, playing music, only the front side has a speaker, so friends who pursue a sense of music may feel that there is still a trace of regret.

Fourth, if the back seat takes more than one and a half hours, the pain in the whole back will become more and more obvious. If there is a real need for long-distance riding, you must prepare an headrest later, be better to yourself and pay attention to it.

Bmw i3 vs: my experience with these two electric cars.

Until recently, nameplates were usually associated with electrodynamics. Now, BMW has given the i3 a new meaning. The brand completed the production of hatchbacks in the summer of 2022, and re-launched the i3 as a full-range, exclusively for the China market, while the 3 Series has always been the leader in the high-end compact market segment in China.

Interestingly,Bmw i4It is also new. After personally experiencing these two cars, the following are the differences I found during the use of electric cars.

design

Although BMW i3 is currently sold only in China, i4 is sold worldwide and produced in Germany. BMW fans will not complain about the grille of the i3, because it imitates the front of the gasoline model.

There are two configurations: BMW i3 eDrive35L and BMW i3 eDrive40L. The last letter means that its length is 10 cm longer than that of ordinary 3 Series cars. The model discussed in this paper is BMW i3 eDrive35L.

BMW seems to have standardized the design of its electric car. andiX1andiX3Similarly, the BMW i3 sedan also uses a closed kidney grille with a shiny back. Its overall design is based on G20 3 series design. I4 is unique because of its huge grille, which extends to the lower air intake and has more than doubled in size.

Both electric cars are equipped with wheels. The BMW i3 sedan is equipped with 19-inch wheels, while the BMW i4 offers 18-inch and 19-inch wheel options on the American i4 eDrive40. More importantly, the size of i3 (191.8 inches) is longer than that of i4(188.5 inches). The wheelbase of i3 (116.7 inches) is also longer than that of i4(112.4 inches).

BMW has adopted a radical rear bumper design for these two electric car brothers and sisters. Interestingly, the wheelbase of i3 is longer than that of i4.

At the rear, the BMW i3 sedan is equipped with the same LED taillights as the 3 Series. In other words, both i3 and i4 are equipped with aggressive rear bumpers and optimized for air efficiency.

Interior decoration and characteristics

The interior of BMW i3 car is quite different from that of 3 Series. In fact, it is more in line with i4, despite its unique center console and door decoration design. The digital space of these two cars is the same. Both i3 and i4 use curved display panels, equipped with a 14.9-inch central touch screen infotainment system and a 12.3-inch digital cockpit.

The BMW i3 sedan is equipped with the M steering wheel on the sports i4 M50. Although the design is similar to the dashboard architecture, i4 is one of the first electric vehicles to turn to iDrive 8.5. Photo: BMW

However, the center console is unique. The gear selector of BMW i3 car is located behind the steering wheel, while i4 has a suitable gear lever. In other words, both cars have the same physical buttons for climate control and driving mode. Interestingly, the i3 is equipped with an M steering wheel (or a closely matched unit), which also appears on the i4 M50.

Both cars are equipped with BMW iDrive 8 software, and i4 recently switched to 8.5, which is simpler and more intuitive to operate compared with the older generation operating system. I3′ s system is compatible with WeChat, Small Scene 2.0, and other popular domestic platforms. It also supports.

specifications

Powered by a single motor mounted on the car, the BMW i3 eDrive35L can produce 282 horsepower and 295 lb-ft. It is equipped with a 66.1 kWh battery and can travel 327 miles with CLTC certification. On the other hand, the BMW i4 eDrive40 has a power of 335 HP and a torque of 317 lb-ft. It is equipped with a larger 81.5 kWh battery, which can provide a cruising range of 301 miles under the EPA cycle.

With the addition of i3 eDrive40L, the obvious performance advantages enjoyed by i4 single motor are short-lived. However, in the comparison between the two cars, the dual-motor eDrive40 variant is still the king of performance.

China specifications of BMW i4 and BMW i3 cars. Source:

The first equipped 3 series

A novelty of BMW i3 car is the adaptive air suspension on the rear axle. This marks a watershed in the 47-year history of the 3 Series, because this is the first time that a customer has equipped an air suspension on a 3 Series model, which is also a standard configuration. However, this model is of China specifications, and the international version is unlikely to inherit this function in the current or next generation.

Both front and rear suspensions adopt hydraulic rebound damping technology, and with adaptive rear suspension, the riding quality on bumpy roads is said to be more stable. The height of the BMW i3 sedan is also 1.73 inches (44 mm) lower than that of the gasoline-powered 3 Series. The company said that the R&D department has reformed the parts and fine-tuned the suspension to adapt to the local market. BMW i4 has adopted a similar configuration in the global market, equipped with adaptive rear axle air suspension.

BMW fans in China have two matching electric cars to choose from.

Price and manufacturing

The price of BMW i3 eDrive35L is 359 RMB (US$ 49,811) in 900 yuan, and it was launched in China in May 2022. The price of i4 is higher in the local market, starting at 429 yuan (US$ 59,499) in 900 yuan. On board2026 BMW 3 Series of BMW Neue Klasse PlatformBefore the arrival, BMW is unlikely to offer i3 cars on the international market.

The i3 sedan is produced in the BMW Group’s most productive manufacturing plant in China. The electric 3 series is produced in Lydia factory of BMW Brilliance Automobile Co., Ltd. Lydia is a district of Shenyang City. On the other hand, BMW i4 has been produced in the German factory with a history of 100 years since October 2021.

The last thought

After spending quite a long time on these two German electric cars, I found that I chose i4 because of its rear style and more aggressive styling. Indeed, the i3 is more practical in terms of interior space, larger windows and more comfortable rear seats. However, since my main purpose is autonomous driving, I would choose the M50 variant with dual motors if I had a choice, so I would choose i4 between the two.

　　BEIJING, June 2 (Xinhua)-Comprehensive US media reported that on June 1, local time, during the graduation ceremony of the US Air Force Academy held in Colorado, US President Biden tripped over the sandbags at the scene and accidentally fell on the podium.

　　Image source: Screenshot of CNN report

　　It is reported that on the same day, Biden was ready to return to his seat after shaking hands with a college student, but he was tripped and fell to the ground. Biden landed on his hips and then supported himself with his hands.

　　Crowds including Air Force Academy officials and two Secret Service agents also rushed forward, grabbed Biden’s arm and helped him stand up.

　　When he stood up, Biden pointed to the place where he tripped and said that something was blocking his way. The video shows that sandbags were placed near where Biden stood.

　　Image source: CNN video screenshot

　　Finally, Biden returned to his seat in the stands. CNN said that at the end of the ceremony, Biden looked in good spirits.

　　The White House said Biden was in good health after his fall. Ben Labert, director of the White House Communications Office, wrote on social media that "(Biden) he is very good. There was a sandbag on the platform when he shook hands. "

　　Former US President Trump quickly responded to Biden’s fall. "I hope he is not injured. The whole thing is crazy … … At the Air Force Academy (falling)? This is not encouraging at all. "

　　Earlier, it was reported that on June 18, 2022, local time, Biden accidentally fell while riding a bicycle near his residence in Delaware, and immediately stood up and said "I’m fine".

　　In addition, Biden fell down several times when boarding Air Force One: in March 2021, Biden fell down twice when boarding the gangway, and the White House explained that it was because of "too strong wind". In May 2022, Biden once again lost his balance when he was preparing to go to Illinois, but he stood firm in time and grabbed the handrail to board the plane. In June of the same year, he almost tripped before taking the opportunity to attend the Summit of the Americas.

　　In February, 2023, Biden ended his visit to Ukraine and Poland, and stumbled again when he returned by Air Force One.

What we said today. Now let’s follow Xiaobian to see what it has done.

First look at the appearance of Bao Junyue. Bao Junyue’s front face is very elegant and looks tough. Headlights are very in line with consumers’ aesthetics and have great visual impact. The car is equipped with LED daytime running lights, automatic opening and closing, delayed closing and so on. Coming to the side of the car body, the size of the car body is 3381 mm * 1685 mm * 1721 mm. The car adopts cold lines, and the side circumference looks very fashionable and simple, with large-sized thick-walled tires, which is eye-catching. Looking back, Bao Junyue also has exquisite tail lines, and the taillight style is relatively calm and very delicate.

Sitting in the car, Bao Junyue’s interior design looks sharp and simple. The steering wheel of the car is very beautiful in shape, equipped with functions such as manual adjustment of the steering wheel up and down, and the shape is very fighting. Take a look at the central control. The car is equipped with a clean touch-sensitive LCD central control screen, which makes the interior style impressive and fashionable. The dashboard and the seat are equally eye-catching, and the dashboard design is remarkable and very eye-catching. The car uses leather seats, equipped with functions such as electric adjustment of auxiliary seats, electric adjustment of seats, and tilting of seats, which is basically enough for daily use.

Bao Junyue is also 50KW, with a total torque of 140N.m and a maximum speed of 100km/h..

The car is equipped with driving mode selection, remote control key, Bluetooth key, traction control (ASR/TCS, etc.), Bluetooth /WIFI connection, full-speed adaptive cruise and other configurations, which are rich in functions and greatly enhance its convenience.

The Baojunyue introduced today is not only eye-catching in space, but also has reached the mainstream level in various configurations, and there is nothing to be picky about driving experience and space experience. If you go offline and actually experience it, it is estimated that there will be many new gains.

The new generation is the first production car with the latest design language. The iconic transverse grille has evolved again, and the proportion has increased, which is better integrated with the headlights. The overall shape has undergone a subversive change compared with the cash. It has become the mainstream configuration trend of new cars, but at the same time, models equipped with lenses are rare at this level. Even some luxury products are not equipped with lenses, so the new generation’s high demand for details is worthy of recognition.

　　The new generation adopts the latest design language in appearance. Compared with the current models, the iconic transverse grille on the front face is larger in area, which is matched with the headlights on both sides to enhance the visual width of the front face. The whole system comes standard with lens type and is equipped with steering assist function, which has a very good effect after lighting. The length, width and height of the new generation are 4670/1806/1474mm and 2688mm respectively. Under normal circumstances, the luggage compartment has a volume of 510L, which is standard and functional. The seat is still electrically adjustable in the main driver’s seat and manually adjustable in the co-pilot seat.

　　In terms of interior, the new generation continues the design style of the current model. The three-spoke multi-function steering wheel is still a familiar shape, with moderate size and good feel. The multi-function buttons integrated on both sides also provide good convenience. The classic layout design is still adopted, which brings better usability. In addition, the new generation is equipped with 6.5-inch and 8-inch central control panels according to different models, and it also supports many functions internally, making it more versatile to operate.

　　In terms of power, the new generation is equipped with 1.4T and 1.5L naturally aspirated models, including 1.4T110kW(150Ps)/4800-5200rpm, 250Nm/1750-3000rpm; 1.5L85kW(116Ps)/6000rpm，150Nm/4000rpm。 In terms of transmission, the 7-speed dual clutch, 5-speed manual and 6-speed manual are matched with the start.

Disclaimer: The above car purchase preferential information is provided by, and the price fluctuates greatly due to market factors, which is only for car purchase reference; Its authenticity, accuracy and legality are the responsibility of Xiaobian, who does not provide any guarantee and does not assume any legal responsibility.

The article is provided by the author.

　　"There are hundreds of households in the whole building, and there are only some FRP residues on the ground. We are going door to door to investigate and collect evidence." At 8: 50 pm on the 17th, a bloody case of falling objects occurred in Changhong Century City, Mianyang, Sichuan. When Tong Mou, the owner of the community, passed by 37 buildings with his son, he was hit on the head by falling glass. Despite emergency rescue by medical staff, the injured eventually died.

　　After the falling object incident, Mianyang Public Security Bureau Fucheng Public Security Bureau immediately began to investigate and look for witnesses at the scene of the incident, hoping to find the specific position of the glass before falling as soon as possible. On the afternoon of 18th, Liao Jingwen, secretary of the Youth League Committee of Fucheng Public Security Bureau, told the reporter of Huaxi Dushi Bao that the police had inspected the nearest building with falling glass for three times, and the source of the glass had not been found yet.

　　Walking in the owner’s community, falling glass hits the head.

　　"Too bad, it’s just unexpected trouble." When the reporter from Huaxi Dushi Bao came to Mianyang Gaoshui Changhong Century City, the owners in the community could not help but sigh when they talked about the incident of falling glass and killing the passing owners on the evening of 17th.

　　The community is a closed community, and the incident occurred in 37 buildings, with a total of 30 floors. At 8: 50 pm on the 17th, Tong Mou, the owner of the community, took his 13-year-old son for a walk in the community. When he reached the 37th building, a piece of glass suddenly fell from the sky, hitting Tong Mou’s head. "The owner who was smashed suddenly fell to the ground and his head was bloody." Ms. Zhong, the owner of the community, said that the nearby owners immediately called the police after seeing this situation. The 120 medical staff who arrived later immediately rescued him, but the man eventually died. "The doctor said that skull fracture, the man who was smashed, was bleeding openly." Ms. Zhong said.

　　Regarding the falling glass in the community, the community owner reported that a similar incident occurred in 27 buildings in the first phase of the community the day before the incident. "The bedroom window glass of a resident was blown off to the ground by the strong wind." The owner said, fortunately, there was no one downstairs at that time, otherwise there would be a tragedy in advance. "Unexpectedly, this tragedy finally happened."

　　At noon on the 18th, Fucheng police reported that at about 20:50 on June 17th, 2016, Tong XX (male, 43 years old, from xinqiao town, Youxian District, Mianyang), the owner of Changhong Century City Phase II, and his son XX (male, 13 years old) were walking through the first floor of Building 37 in the community and were hit on the head by falling glass. They died after being rescued at 10 o’clock that night.

　　From that night to the early morning, the police conducted three door-to-door investigations.

　　Liao Jingwen, secretary of the Youth League Committee of Fucheng Public Security Bureau, said that after receiving the alarm, the branch immediately organized the criminal investigation department and the police station in the jurisdiction to investigate the glass drop. "The houses of hundreds of households upstairs have been inspected three times, but the specific drop point of glass has not been found." Liao Jingwen told reporters that when the police investigated the source of the falling glass, the sub-district offices and property management companies in the jurisdiction also began to investigate and rectify potential safety hazards.

　　According to reports, when the police handling the case rushed to the scene of the incident, there was only some glass residue on the ground, and it was still uncertain whether it was a natural fall or a man-made throwing that caused casualties. At present, in addition to door-to-door investigation of the building, the police also use technical means to investigate. "Because the building has 30 floors and hundreds of households, and some owners are not at home during the household inspection process." Liao Jingwen said that the police handling the case were still on the scene, and when the owners who had not returned home returned home, they did not check the houses and entered the household for investigation. "Strive to learn the truth about falling glass in the shortest time."

　　"We checked it once at 10 o’clock that night; Then, at 3 am on the 18th, it was checked for the second time; At 6 o’clock on the morning of the 18 th, it was investigated for the third time. " The relevant person in charge of the suburban police station said that when entering the house for investigation, cameras are used to collect evidence. If there is no one at home or the owner is in the field, the relatives and friends nearby will be entrusted to the scene to carry out technical unlocking and enter the house for investigation.

　　The person in charge said that at the same time, in order to prevent the residents who had fallen glass from buying glass again and installing it, after the incident, the police arranged for the police to guard the exits of the building.

　　[Lawyer’s statement]

　　If it is difficult to identify the perpetrator, most of the owners of the whole building will be responsible

　　Then, should residents be held criminally or civilly liable for falling glass and killing them? If you can’t find the place where the glass fell, who will be responsible for the compensation?

　　In this regard, jiang bo, a lawyer of Sichuan Shuren Law Firm, said that if a clear perpetrator is identified, the perpetrator may bear criminal responsibility for the crime of negligent death and civil liability for compensation. If it is difficult to determine the specific infringer, in addition to being able to prove that he is not an infringer, the user of the building who may harm will be compensated. Generally speaking, except for the low-rise living outdoors, the residents of the whole building may bear civil tort liability. Huaxi Dushi Bao reporter Yao Maoqiang Zhou Hongpan Picture provided by netizens

Special topic: picture channel

　　　　Putin is taking a power curve for his future, no matter how tortuous the route is, leading to power is the only decision-making choice; Regardless of Putin’s future political fate, it is certain that he will still play a decisive role in Russia’s future development for a long time.

　　

　　　　Putin

　　　　During Yeltsin’s reign, Putin was not a nobody. Only in the Kremlin, he is behind the scenes. Before he became the first deputy prime minister and acting prime minister of the Russian Federation government on August 9, 1999, he was a real power figure: since August 1996, he has been the deputy director of President Yeltsin’s affairs administration, responsible for the work of the legal bureau and Russian foreign property. From 1997 to 1998, he served as deputy director of the President’s Office and director of the General Administration of Supervision of Russian President Yeltsin. Since July 24, 1998, he has served as director of the Russian Federal Security Service. In the future, he became a colonel in reserve service, replacing General Kovalev who held this post. Since March 29, 1999, he has also served as Secretary of the Security Council of the Russian Federation.

　　　　Being behind the scenes and holding such an important series of positions makes Putin’s body shrouded in a layer of fog, which makes him unclear and unpredictable. Even the mass media can’t find a "standard photo" of Putin when he takes office as the director of the Federal Security Service. In addition, his dual identity makes him more puzzled by the world: first, his KGB experience, and second, his status as a close aide to the mayor of St. Petersburg, sobchak. This also happens to be a political card in Yeltsin’s hand. In the last few months of Yeltsin’s administration, he played several "Prime Minister’s Cards", and Putin was one of these cards, but Yeltsin refused to play this card. The reason why he didn’t fight was because of Putin’s "mystery". Yeltsin wanted to use this "secret weapon" to win a key victory for himself at a critical moment. When Yeltsin chose Stepachen or Putin as prime minister, he considered this: "However, my intuition tells me that it is too early to put Putin on the stage of political struggle, and he should come out later. Too little time for political acceleration is not good, and too much may be worse. Society should not be allowed to get used to Putin in these’ lazy’ summer months. His mystery should not disappear. Unexpected and sudden factors should not disappear, factors linked with new powerful politicians. This is crucial for the election. "

　　　　Maintaining Putin’s mystery has become a key factor and an indispensable condition for the development of Russian political process today.

　　From St. Petersburg

　　　　Putin’s "KGB" experience is now known to all. However, little is known so far that Putin himself is not proud of this experience. In 1990, Putin reported his resignation to the KGB shortly after returning to Leningrad from the GDR. On August 20, 1991, the day after the "August 19 incident", Putin made a report for the second time and insisted on resigning from the "KGB". He was approved to resign. According to the rules of "KGB", the backbone personnel of "KGB" are never allowed to leave their posts, and can only be transferred to "serving as reserve backbone personnel". After Putin was allowed to resign, he ran to his friend Shadhan who worked in Leningrad TV station and said, "Igor, I want to talk frankly and sincerely about my past work. That’s it, because it’s no longer a secret, and no one can threaten me with it anymore. " Putin and Shadehan had a long conversation, and Shadehan recorded the conversation as a program. During the conversation, he asked Putin in detail about his work in the KGB, what he did and when he worked in the intelligence agency. This program was later broadcast on Leningrad TV. Putin’s resignation and "confessing" his KGB experience to the audience showed his ambition to make progress politically. He didn’t want his experience to be used in the future, which would affect the promotion of his career, so whenever someone hinted at his past to Putin later, he would say, "I told you everything." There’s nothing interesting. Everyone knows about all this. "

　　　　Before transferring from Leningrad University to St. Petersburg Municipal Government, he had an open talk with Mayor sobchak. He said to sobchak, "I should tell you that I am not only an assistant to the headmaster, but also a key officer of the KGB. However, I have resigned now. " Sobchak accepted Putin, and later he said, "He explained this decision to me because he didn’t agree with the policy initiated by the new leader of the committee. Putin went so thoroughly that he was not even included in the reserve list of his current position, so he never surpassed the rank he had when he left office in the past 10 years. " Sobchak’s evaluation of Putin is: "I have always held a negative attitude towards the KGB and have no contact with this organization, but I have complete trust in Putin. Once he told me that he broke off the relationship with the Committee, that is to say, that’s what happened. Later, I found that some people around me continued to cooperate with the KGB, but Vladimir vladimirovich did not give me reason to doubt his honesty and decency. "

　　　　Putin is really loyal to sobchak. He became sobchak’s most reliable assistant, helping him to make decisions and carry out the tasks he entrusted. When sobchak’s struggle with the highest level of power was in a losing position, even when he was imprisoned, tried and his life was in danger, Putin extended a helping hand in time, and finally planned and arranged sobchak’s escape from Paris. In 1996, when sobchak was running for mayor, Putin took the oath of "loyalty", stating that if sobchak was not elected, they would collectively resign from the municipal government. But after sobchak lost the election, Putin and many others really did this. To this end, sobchak is very grateful to Putin: "Not only did he not betray me like many others, but he also sent a letter to the highest authority to defend me."

　　　　During Putin’s tenure as deputy mayor and first deputy mayor of St. Petersburg and in charge of the work of the Foreign Economic Liaison Committee, he led the planning and implementation of the St. Petersburg Free Economic Zone, and established a joint venture to produce Coca-Cola and similar joint ventures. At this time, Putin merged with the elites from the Economics Department and Law Department of St. Petersburg University around sobchak, and became a unique person among them with his own education in the Law Department and his practice in the KGB. He has his own group of like-minded people, including Zubcov, who is now nominated by Putin as prime minister.

　　　　Putin appeared on the political stage under the banner of sobchak and began to attract attention, but Putin finally fulfilled sobchak, and because of this fulfillment, Putin was able to rank among the first-class Russian politicians. So far, people have always said that Putin brought people from St. Petersburg into the Kremlin after taking power. But the actual situation is just the opposite. It was the legal and economic elites around sobchak who first came to the Kremlin to participate in politics and take power. When sobchak lost the election and Putin "had no job", it was these people who brought Putin into the Kremlin. With the further development of Russia’s political process, the "St. Petersburg faction" regrouped around Putin and became the core force to determine the future and destiny of Russia’s development.