At 9:00 on March 21, accompanied by a whistle, the g80 "Fuxing" EMU train loaded with recruits in the first half of the year slowly drove out of Guangzhou south railway station and went all the way north. The scenery outside the car window gradually transits from Lingnan landscape to Beiguo landscape. Recruit Wang Peijian stared at the red speed sign in the car - 350km / h! The Beijing Guangzhou line runs north and south. Eight hours later, Wang Peijian and his comrades in arms crossed more than 2000 kilometers to Beijing. Then, they took the Beijing Zhangjiakou high-speed railway, galloped past the foot of the great wall and arrived at the military camp in Zhangjiakou, Hebei Province. The journey of thousands of miles takes one day. The accurate and efficient transportation and delivery of recruits benefits from China's larger and denser high-speed railway network. In January 2021, when President Xi went deep into the three competition areas of Beijing and Hebei to investigate the preparations for the Beijing Winter Olympic Games and the winter Paralympic Games, he stressed: "the Beijing Zhangjiakou high-speed railway is a successful example of China's independent innovation. From introduction, digestion, absorption to re innovation to independent innovation, it has now led the world and fully proved the remarkable advantages of the national system." Like the "silver dragon" flying close to the ground and the wind blowing the earth, China's high-speed railway is creating a new travel speed and refreshing a new height of science and technology. After several generations of continuous struggle, China has now formed a world advanced high-speed rail technology system with independent intellectual property rights. The technical level of high-speed rail has generally entered the world's advanced ranks, and some fields have reached the world's leading level, taking a key step from catching up to leading. Run out of the "China speed" of independent innovation —— China's high-speed railway construction leads the world ■ PLA Daily reporter Shan Huifen In the dispatching office of Beijing Railway Bureau, the staff monitored the location, running speed and operation status of each EMU in real time through the computer screen in front of the dispatching desk of Beijing Zhangjiakou high-speed railway. Shen Jizhong From "one line" to "one net" The high-speed railway network is becoming more and more dense 1 hour, what can I do? "One hour, you can go to an ice and snow appointment." This is the answer of Liu Yun, a ski lover. Starting from Beijing, you can take the Beijing Zhangjiakou high-speed railway and arrive in Chongli District of Zhangjiakou City in one hour, which has become the preferred ski resort for Beijing and Tianjin citizens. At the end of 2019, the Beijing Zhangjiakou high-speed railway, an important supporting project for the Beijing Winter Olympic Games, was put into operation, and Zhangjiakou entered the "one hour life circle" of Beijing, Tianjin and Hebei. In China, the Olympic memory is closely linked to the development of high-speed rail. On August 1, 2008, on the eve of the opening of the Beijing Olympic Games, driver Li Dongxiao sounded the first whistle and also played the prelude of China's High-speed Railway Era - the opening and operation of China's first high-speed railway, Beijing Tianjin Intercity Railway. As the driver of No. 0001 high-speed railway, Li Dongxiao drove the "harmony" EMU to complete the first duty task. In more than 10 years, a series of high-speed railway trunk lines have been completed and opened to traffic from south to North and from west to East: In June 2011, the Beijing Shanghai high-speed railway was put into operation. During the trial operation, it set a world record of 486.1 kilometers per hour; In December 2012, Harbin Dalian high-speed railway was opened to traffic, becoming the first high-speed railway in the world to cross the high-cold seasonal frozen soil area; In the same month, the 2298 km long Beijing Guangzhou high-speed railway was opened to traffic, making it the longest single high-speed railway in the world; In June 2021, the Lhasa Linzhi railway from Lhasa to Nyingchi in Tibet was put into operation, and the plateau EMU connected with the oxygen supply system was put into operation on the Qinghai Tibet Plateau. The "Fuxing" achieved full coverage of 31 provinces, autonomous regions and cities China seems to have become "small", and "poetry and distance" are no longer far away. By 2021, the operating mileage of China's high-speed railway has exceeded 40000 kilometers. The "four vertical and four horizontal" high-speed rail network has been fully completed, and the "eight vertical and eight horizontal" high-speed rail network is being densified and formed. China's high-speed railway is like a vigorous "artery", redefining time with speed and constantly rewriting space with routes. "Unforgettable, proud and extraordinary." 14 years later, Li Dongxiao's unit undertook the task of driving the Beijing Zhangjiakou high-speed railway. He continued to participate in serving and ensuring the Beijing Winter Olympics. Li Dongxiao used these three words to express his inner feelings when he met the Olympic Games again. From "man" to "big" "Created in China" across mountains and rivers At the foot of the Great Wall in Yanqing District, Beijing, the Beijing Zhangjiakou high-speed railway roared past under the Zhan Tianyou sculpture at Qinglongqiao station. History meets at this moment. Zhou Yao, who took the Beijing Zhangjiakou high-speed railway for the first time, was particularly excited. Above the train is the Beijing Zhangjiakou Railway maintained by grandpa in those years. Zhou Yao's family has been associated with the railway for three generations. Grandpa maintained China's first self-designed, built and operated Beijing Zhangjiakou Railway, and his father participated in the preparation of the Beijing Tianjin Intercity Railway. After retiring from a rocket army unit, Zhou Yao joined China Railway sixth Bureau Group Co., Ltd. and his first project was the construction of Beijing Zhangjiakou high-speed railway. When they were young, their father said, "we need to keep track of the railway construction in real time. When they were young, they need to keep track of the railway construction data at all times. Although their father said," when they were young, they need to be able to keep track of the railway construction in real time. When they were young, they need to keep track of the railway construction data at all times. Now, they need to be able to keep track of the railway construction data. " At the beginning of the 20th century, Zhan Tianyou, the designer of Beijing Zhangjiakou Railway, once had the regret of "being ashamed": Although the design and construction of the railway were completed by the Chinese, the main components and even nails were imported from abroad. Today, the "Fuxing" EMU with China's completely independent intellectual property rights passes through 4 meters below the apex of the "herringbone" railway designed by Zhan Tianyou in those years, writing a "big" word to outline the dream track of China's high-speed railway. 5g signal, wireless charging, intelligent light regulation, automatic color changing windows... During the Beijing Winter Olympics, athletes at home and abroad were amazed at the "black technology" of Beijing Zhangjiakou high-speed railway. Based on Beidou satellite and geographic information system (GIS), Beijing Zhangjiakou high-speed railway, known as the "integrator" of China's railway development and the intelligent high-speed railway demonstration project, has a high-precision "positioning" network to provide intelligent services for the whole process of construction, operation, dispatching, maintenance and emergency. The real-time "physical examination" system of the line can connect the operation of each bridge, station and rail of the whole line to the computer through sensors. Whether the parts are aged, whether the subgrade is settled, and whether the lighting is damaged are clear at a glance. "We are standing on the 'shoulder' of the rapid development of China's railway, equipment manufacturing and comprehensive national strength to plan another leap of China's high-speed railway." Wang Hongyu, overall designer of Beijing Zhangjiakou high-speed railway of China Railway Design Group, said. Independently built the world's highest altitude plateau railway, the heaviest heavy-duty railway, the fastest operating Intelligent Railway in the world, and the high-speed railway with automatic driving and intelligent physical examination... One innovation achievement fills the technical gap, which is a true portrayal of the Chinese people's overcoming difficulties and aiming at innovation. From following, running in parallel, and then leading, China's high-speed railway adheres to independent innovation, occupies the commanding height of world railway research and development in many key technology fields, and carves out a legendary road from "made in China" to "created in China". From "building roads" to "building dreams" Beautiful days spread along the way In early spring, in the verdant Yarlung Zangbo River Valley, the "Fuxing" train roared past and drove to Nyingchi, the "south of Tibet" with the running river. Looking at the beautiful scenery flashing in front of me, ouba, the military sister-in-law who lives in nierong County, Naqu City, Tibet, had ripples in her heart. Ouba's husband, lenzhuziren, is stationed at the moto border in Nyingchi city. Thousands of kilometers from nierong county to Motuo County, it used to take three days to visit relatives. Now, with the opening of the Lalin railway, oba can be reunited with her husband in less than a day. The dream of "going to Lhasa by bullet train" will come true once and for all. In 2021, President Xi sat on the special train to observe the construction along the Lalin railway, and pointed out that "we should make an overall plan for the construction of the railway network in the western frontier, fully demonstrate and plan scientifically, so as to better serve the high-quality development of the frontier areas and the high-quality life of the people." High quality development and high-quality life are related to the national plan and the people's livelihood, and jointly point to the people's growing needs for a better life. Bangzhong village, mirin Town, mirin county is the only place for tourists to go to Yarlung Zangbo Grand Canyon. It is less than half an hour's drive from the newly built mirin high-speed railway station. Dobujie, a villager who originally operated a sand quarry, sold sand mining machinery and set up a farmhouse. The average daily income in the peak tourist season exceeded 2000 yuan. In addition to increasing people's income and getting rich, industrial development has also caught the express train of Lalin railway. In burengou, pozhang Township, Naidong District, Shannan City, a modern intelligent chicken farm has sprung up. "We have been worried about the high logistics cost in Tibet before, and it is difficult for high-quality products to leave Tibet. Now we can let go of development." Zhang Honglin, who came from the mainland to invest in Tibet, said. "As soon as the train rings, ten thousand liang of gold" once created a number of "cities pulled by trains". Today, the high-speed railway has driven the economic growth along the line and the optimization and upgrading of relevant industrial structure, promoted the coordinated development of regions, urban and rural areas and the construction of ecological civilization, and had a huge spillover effect. Looking at China on the high-speed railway, people see not only the magnificent mountains and rivers of the motherland, but also the vitality of economic development. At 9:10 on December 6, 2021, the first train g9693 loaded with passengers left Jishou east station in Xiangxi Tujia and Miao Autonomous Prefecture of Hunan Province, and the "targeted poverty alleviation" initiative ended the history of no high-speed rail. A number of old revolutionary base areas and remote mountainous areas have entered the "fast lane" of revitalization and development. In the 1930s, the writer Shen Congwen returned to his hometown Fenghuang County from Beijing and took the train to the waterway. When he came to the lunar calendar for 28 days, he created the "notes on the journey to Hunan" during his long journey. Today, you can take train g4481 from Beijing to Fenghuang ancient city station in more than 7 hours. When the traffic is planted with the wings of science and technology, the mountain is no longer high and the road is no longer long. The "Fuxing" train runs in Shannan City, Tibet. Photo by Xinhua News Agency reporter jueguo Adding "China heart" to high-speed rail trains ■ chenyanping, senior engineer of CRRC Zhuzhou Electric Locomotive Research Institute If the traction converter is equivalent to the "heart" of a train, then it is equivalent to a person. For more than 20 years, what I have been studying is how to make this heart "beat" more healthily and make rail trains, including high-speed rail, run faster and better. I am a senior engineer of CRRC Zhuzhou Electric Locomotive Research Institute, mainly guiding the product development and technical research of the company's converter and power module. In 1998, I graduated from Shanghai Jiaotong University and came to Zhuzhou, Hunan Province, which is known as the cradle of China's electric locomotives. At that time, I was the only student in my class who did not choose to work in the capital or provincial capital city, and my salary was much lower than that of students working in enterprises in coastal cities. People often ask me if I don't regret it. I always answer, "as long as there is a research desk, I have the whole world." Traction converter is one of the key technologies of high-speed EMU. Insulated gate bipolar transistor (IGBT) is the core component of traction converter. IGBT application technology is therefore known as the "Everest" of locomotive core technology. Previously, this technology was monopolized by foreign enterprises for a long time. In the first 10 years of working in the Institute, under the guidance of my master, I and my team members devoted ourselves to tackling key problems and independently developed a series of IGBT traction converters from scratch, filling the domestic technical gap. In 2009, I was the director of the traction converter Department of the company, and the team ushered in a major challenge - completing the first batch on time