The person involved in the creation of the "Oriental loud noise" has now left quietly. This day was November 17, 2018, a sunny day.

A recent photo of Academician Cheng Kaijia during his lifetime. Data picture

The person involved in creating the "Oriental loud noise" has now left quietly.

This day was November 17, 2018, a sunny day. Cheng Kaijia, the founder of the "Two Bombs and One Satellite", died in Beijing at the age of 101.

54 years ago, it was also a sunny day when China's first atomic bomb exploded in Lop Nur. Cheng Kaijia and his comrades stood upright on the vast Gobi Desert, staring at the mushroom clouds rising in the air, cheering.

At that time, Cheng Kaijia and his comrades were in their prime; at that time, they were in their prime; at that time, they created the glory of the Chinese nation with their youth and stood up the backbone of China with their backbone.

Time makes career immortal; time makes people old. Cheng Kaijia's last appearance in the public eye was the awarding ceremony of the "August 1st Medal" in 2017. Like all ordinary old men, wrinkles crawled over his face. That day, this passionate young man who once made a vow to save the country through technology, this physics genius who once studied in Britain, and the "nuclear commander" who once hid in Lop Nur, could only sit in a wheelchair and accept the respectful gaze of the younger generation.

Before Cheng Kaijia, the heroes who participated in the "two bombs and one satellite" left one after another. These are some names closely linked to the fate of the country: Qian Xuesen, Zhu Guangya, Ren Xinmin, Chen Fangyun... What we are leaving are immortal figures and legendary stories.

In the past two days, many people's WeChat Moments have been flooded with news of Cheng Kaijia's death. Everyone bid farewell to the Chinese "nuclear commander" with regret. Many people may not know that Cheng Kaijia also bid farewell to his former comrades in tears. The scene was plain and simple, but carefully savored it but was intense.

Many people may not know that Lin Junde is Cheng Kaijia's old subordinate and old comrade-in-arms. In 2012, the spring flowers in Beijing have not yet fallen. At the General Hospital of the People's Liberation Army, 75-year-old Lin Junde met 94-year-old Cheng Kaijia.

At that time, Lin Junde's life had entered the countdown - the advanced stage of cholangiocarcinoma. Even so, Lin Junde still used all his strength to visit Cheng Kaijia in person. Relatively speechless, only the heart knows. Looking at Lin Junde standing in front of his bed with all his strength, Cheng Kaijia's eyes were full of excitement.

This former old subordinate trembled and stretched out his hand, holding Cheng Kaijia's hand tightly. These are two thin hands covered with age spots. It was these two hands that, in that turbulent era, created the "Oriental loud noise" like many hands.

When Lin Junde left forever, Cheng Kaijia was deeply saddened and wrote the elegiac couplet with his trembling hands: "A piece of sincerity and loyalty, and outstanding contributions to the nuclear test."

A man doesn’t cry easily, but he hasn’t reached the sad place. The same is true for the strong Cheng Kaijia.

In 2008, everyone was immersed in the joy of the Beijing Olympics. A "two bombs and one satellite" hero left quietly, and he was Zhang Yunyu. When Zhang Yunyu was critically ill, Cheng Kaijia rushed to his bedside and held his palm and looked at him with tears in his eyes. The silence of the two old men contained soul-stirring power.

Zhang Yunyu (right) and Cheng Kaijia (left). Data picture

Cheng Kaijia will never forget that during those difficult years of "eating steamed buns to make the atomic bomb", Zhang Yunyu once gave herself so much support.

976 discussion meeting before the underground nuclear explosion test, the width of the tunnel near the exit became the focus of dispute. Cheng Kaijia believes that the outlet is too wide and there is a risk of leakage if it is not sealed. At that time, some people also raised objections. At this time, Zhang Yunyu stood up and said firmly: "This question is my turn to Cheng."

998, Cheng Kaijia went to visit Zhang Yunyu. That day, he was wearing a straight suit. Recalling the simple but powerful eight words that Zhang Yunyu said 22 years ago, Cheng Kaijia silently cried. Zhang Yunyu, who was sitting quietly beside him, was silent, recalling their Malan years, with hot tears slid down her cheeks...

Zhang Yunyu left.Cheng Kaijia took out the poem that Zhang Yunyu gave him back then: "Let Chengjun test the nuclear bomb, make the world in the electronic layer..."

Now, when the golden autumn leaves fall, Cheng Kaijia has also left. Perhaps, he was in another world, in that distant Malan, and he was reunited with his old comrades.

"The yellow sand has worn golden armor for hundreds of battles, and will never return until Loulan is destroyed." These "veterans" on China's nuclear test battlefield interpret a belief in their lives - the iron belief of forging shields for the country and constantly improving themselves! History chose their generation, and their generation also created history.

Cheng Kaijia (second from left) discussed technical issues with scientific researchers. Data picture

Life is short. On the stage of history, Cheng Kaijia and his generation came quietly, and now they left quietly. All they left was a silent monument - the mushroom cloud that never dissipated and soared into the sky in the depths of Lop Nur.

The west wind is cold and the yellow sand is sweeping. This monument of history seems to tell the world: no matter how long it has passed, our memories cannot pass by the wind or be buried by the yellow sand.

The "heroic sound of the East" that emerged from the sky was called "this is what determines fate." We must always remember that it is precisely with the silent dedication of Cheng Kaijia and his generation that we have today's China.

is the Republic of China casting shield

In his later years, Cheng Kaijia was carefully reviewing scientific research materials. Data picture

expects that "the family can have a study and official" grandfather gave the Cheng family a name "Kaojia" early, which means "accomplishing the imperial examination"

1918, Cheng Kaijia was born in a "Huizhuang" family running a paper business in Shengze Town, Wujiang, Jiangsu Province. My grandfather Cheng Jingzhai’s biggest wish was to hope that a person who studied and became an official in his family would be born. Before Cheng Kaijia was born, he gave the name “Kaijia” for the future grandson of the Cheng family early, which means “to pass the imperial examination”.

's later growth trajectory proved that Cheng Kaijia did not disappoint his grandfather's expectations.

937, Cheng Kaijia was admitted to the "public student" in the Department of Physics of Zhejiang University with excellent results. In this university, which was praised as "Eastern Cambridge" by the famous British scholar Dr. Needham, Cheng Kaijia received rigorous mathematical learning and scientific spirit training by four professors Shu Xingbei, Wang Ganchang, Chen Jiangong and Su Buqing.

941, Cheng Kaijia graduated from University of Science and Technology and stayed at the school as an assistant teacher. In 1946, with the recommendation of Joseph Needham, Cheng Kaijia received a scholarship from the British Council and came to the University of Edinburgh and became a student of Professor Born, who is known as the "physicist among physicists".

Boen has taught four Chinese students: Peng Huanwu, Yang Liming, Cheng Kaijia and Huang Kun throughout his life. Later, they all became academicians of the Chinese Academy of Sciences. Peng Huanwu and Cheng Kaijia were awarded the "Two Bombs and One Satellite Medal", and Huang Kun and Cheng Kaijia won the highest national science and technology award.

Academician Cheng Kaijia (third from left) took a photo when he was studying abroad when he was young. Data picture

Four years after being with Born, Cheng Kaijia met scientific masters such as Dirac, Heitler, Schrödinger, Miller, Powell, etc. In 1948, Cheng Kaijia obtained his Ph.D. from the University of Edinburgh, recommended by Born and served as a researcher at the Royal Institute of Chemical Industry in the United Kingdom.

950, bathed in the rising sun of the new China, Cheng Kaijia refused to keep his mentor Born and returned to his long-lost motherland.

One night before returning to China, Born and Cheng Kaijia had a long talk. Knowing that he had made up his mind, the mentor reminded him: China is very hard now, so I can buy more food and bring it back. He was grateful for the care of his mentor, but in his luggage, he had nothing to eat. All the books and materials he bought about solid physics and metal physics that he urgently needed to build a new China.

Cheng Kaijia first taught at his alma mater, Zhejiang University, and served as an associate professor in the Department of Physics. In 1952, the college was adjusted, and he was transferred from Zhejiang University to Nanjing University. In order to adapt to the needs of the country's economic development, Cheng Kaijia took the initiative to shift his research focus from theory to theory and application.

958 to 1960, according to the organization's arrangements, Cheng Kaijia and Professor Shi Shiyuan jointly founded the nuclear physics major of Nanjing University, laying the foundation for the development of nuclear physics at Nanjing University.

Cheng Kaijia when he first arrived at the nuclear test base. Data picture

command to transfer Cheng Kaijia to Beijing. From then on, he joined the nuclear weapons research team in my country and was hiding his identity and disappeared in the academic community for more than 20 years. One day in the midsummer of 11960, Nanjing University President Guo Yingqiu suddenly called Cheng Kaijia to the office: "Comrade Kaijia, there is an important task in Beijing to second you. You go home to make some preparations and report tomorrow." After that, the principal took out a note with the address written on it and handed it to him.

Seeing Principal Guo’s serious face, Cheng Kaijia asked nothing, and soon set off in Beijing and found that mysterious place - No. 9, No. 3 Huayuan Road. Only then did I realize that I was going to build an atomic bomb.

In this way, Cheng Kaijia joined the Chinese nuclear weapons development team.

The difficulties encountered in the early stages of the development of the atomic bomb in China are now unimaginable. According to the task division, the theoretical research on the state equations of materials in charge of Cheng Kaijia and the research on detonation physics. During that time, Cheng Kaijia's head was almost full of data. Once when he was queuing up to buy food, he handed the meal ticket to the master and said, "I will give you this data, you can check it." Deng Jiaxian, who was standing behind, reminded, "Professor Cheng, this is the canteen." While eating, he suddenly thought of a question, so he turned his chopsticks over, dipped them in the soup in the bowl, wrote on the table, thinking.

Finally, Cheng Kaijia was the first to use a reasonable TFD model to estimate the pressure and temperature of the bomb center when the atomic bomb exploded, providing a basis for the overall mechanical calculation of the atomic bomb.

962, after the tireless exploration and research of scientists and technicians, my country's atomic bomb development has overcome countless difficulties and finally revealed the dawn of hope. The first atomic bomb explosion test was put on the agenda.

In order to speed up the process, Qian Sanqiang and other leaders of the Second Machinery Department decided to divide the troops into two groups: the original team continued to develop the atomic bomb; and also organized a team to prepare for nuclear tests. Qian Sanqiang proposed that Cheng Kaijia was responsible for the technical issues related to nuclear tests.

This means that the organization has made another adjustment to his work. Cheng Kaijia is very clear that his strengths are theoretical research. Giving up what he is familiar with will make the road ahead more difficult. But in the face of the needs of the motherland, he did not hesitate to move into a new field: nuclear testing technology.

Later, Cheng Kaijia talked about the complexity and difficulties he had when he opened up this new field in an article titled "Nuclear Testing Must Be Strictly Follow Scientific Laws": "This is a large, extensive, multi-disciplinary systematic project. Theory and practice must be organically coordinated... There must be both a global theoretical systematic analysis, and through practice, step by step, crossing the river by feeling the stones, and doing it step by step." After a period of exploration, Cheng Kaijia began to establish the "Nuclear Weapon Testing Research Institute" and assumed the responsibility of the general person in charge of China's nuclear weapons testing technology. From then on, Cheng Kaijia was the deputy director and director of the Nuclear Weapons Test Institute, and also the deputy director of the Nuclear Weapons Research Institute. After the Nuclear Weapons Research Institute was changed to the Institute, he was also the deputy director. It was not until 1977 that Cheng Kaijia was appointed as deputy commander of the nuclear test base and was removed from the deputy director of the Nuclear Weapons Research Institute.

A group of data and historical materials record Cheng Kaijia's pioneering and innovation in the field of nuclear testing technology and his immortal contributions to the development of China's nuclear industry -

1On October 16, 1964, the first atomic bomb independently developed by China successfully exploded. Data picture

In October 11964, China's first atomic bomb was successfully tested, and more than 1,700 (sets) of instruments were all obtained.

1 In December 11966, China's first hydrogen bomb principle test was successful. Cheng Kaijia proposed to use cement to reinforce the ground at a certain radius of the tower foundation to reduce dust infestation, which was very effective.

In June 11967, China's first hydrogen bomb test was successfully tested. Cheng Kaijia proposed a bomb drop plan to change the flight direction of the aircraft, ensuring the safety of the bomb drop aircraft.

1969, China's first underground nuclear test for flat holes was successful. Cheng Kaijia designed a self-sealing backfilling and blocking solution to achieve safe "self-sealing" and prevent "firing the gun" and "protruding the head".

In October 11978, China's first underground nuclear test of vertical shaft was successful. Cheng Kaijia's research and design test plan was successful...

From Lop Nur, known as the "Sea of ​​Death" for the first time in 1963 to returning to Beijing to work, Cheng Kaijia worked and lived in the Gobi Desert for more than 20 years. Over the past 20 years, he has successfully organized and directed more than 30 nuclear tests of various types from the first nuclear explosion to the ground, air, underground and other methods afterwards. Over the past 20 years, he has led scientific and technological personnel to establish and develop my country's nuclear explosion theory, systematically expounded the physical phenomena and their generation and development laws of the atmospheric nuclear explosion and underground nuclear explosion process, and has been continuously verified and improved in previous nuclear tests, becoming an important basis for the overall design, safety demonstration, test diagnosis and effect research of my country's nuclear tests.

"When it comes to the Lop Nur nuclear test site, people will think of the eternal desert and the sea of ​​death. When talking about the years of hard work in those days, many comrades will recall the washboard road, living in tents, drinking bitter water, and fighting wind and sand. But for us scientific and technological personnel, what really tortures and tests are the difficulties in work and technical difficulties." Many years later, Academician Cheng Kaijia wrote in an article: "I think that our tradition of hard work is not only drinking bitter water, fighting wind and sand, and enduring hard work in life and work, but more importantly, the fighting spirit of hard study, tenacious research, and bravely climbing the peak. It is the proposal and realization of new ideas and new ideas, and the enterprising spirit of continuous pioneering and innovation."

Academician Cheng Kaijia wrote in his later years: "Innovation, hard work, dedication."

He never admitted that he was an "official person" in his life. He never had the word "power" in his mind, only "authority": the kind of authority of "the capable are the teacher"

Scientists have made great contributions to the glory of the Republic, and the Party and the country have not forgotten them.

On May 30, 1965, the leaders of the Party and the state met at the Great Hall of the People and invited meritorious officials who contributed to the China atomic bomb explosion. Cheng Kaijia and other technical personnel from the Nuclear Test Institute led by him were received. In 1966, Zhu Guangya, Guo Yonghuai, Wang Ganchang, Chen Nengkuan and Cheng Kaijia were invited to climb the Tiananmen Gate Tower to attend the National Day celebration.

Cheng Kaijia is the representative of the third, fourth and fifth sessions of the National People's Congress, a member of the sixth and seventh sessions of the Chinese People's Political Consultative Conference, an academician and senior academician of the Chinese Academy of Sciences. He won the special prize and first prize of the National Science and Technology Progress Award, the second prize of the National Invention Award, the National Science Conference Award, the He Liang and Heli Science and Technology Progress Award and other awards. In 1999, he was awarded the "Two Bombs and One Satellite" Medal of Merit by the Party Central Committee, the State Council and the Central Military Commission. In 2013, he won the National Highest Science and Technology Award awarded by the CPC Central Committee and the State Council. In 2017, the Central Military Commission solemnly held a ceremony to award the "August 1 Medal" and honorary titles, and President Xi Jinping awarded him the "August 1 Medal".

This is a noble praise from the Party and the country, and this is the highest honor of a national defense science and technology worker.

"The name written on the honorary list of meritorious service awards is only a few people, and the glory of our nuclear testing industry belongs to all participants. Because every success of ours is created by millions of people, and every achievement of ours is the crystallization of collective wisdom." Academician Cheng Kaijia is aware of his own, listing the work done by his comrades.

The past events, achievements, and the names of the key players are so clear in his memory -

Lu Min, who volunteered to return to China to participate in the war from the Dubna Joint Nuclear Research Institute; Xin Xianjie, the director of the office who undertakes the development of automatic control instruments for nuclear explosions; Qian Shaojun, Yang Yusheng, Chen Da and other academicians who came out of the release and analysis team; Sun Ruifan, who was transferred from the nuclear test base in his sixth year and returned to the test site to perform tasks...

Also, during underground nuclear tests, the question of whether there is any condensation in the nuclear explosion in granite was the answer given by Xing Tiliang, the autoclave of the six teams at that time; Ding Haoran, in the new nuclear test field area, was the answer given by Xing Tiliang, the autoclave of the sixth team at that time; Ding Haoran, in the new nuclear test field area, was the answer given by the Xing Tiliang, the autoclave of the sixth team at that time; The site selection has made great contributions; Qiao Dengjiang has done a lot of work for each effect brigade, which has achieved a good harvest in effect work; Dong Shoushen has contributed to the drilling technology of the shaft, and the experiment quickly entered the vertical shaft method stage; Cheng Geng played an important role in the calculation and analysis of the self-sealing of the underground flat hole...

Of course, there are also the Yangpingli Meteorological Station, which has been fighting for a long time in the depths of the desert, guard soldiers who have patrol 8,000 miles on foot on the nuclear test field, the engineering soldiers, automobile soldiers, chemical defense soldiers, and communication soldiers who have worked selflessly in Lop Nur - without the hard work and selfless dedication of each of them, and without the strong coordination and support of the people of the whole country, there would be no achievements and glory of our career today.

Thunder has gone far away, but people who yearn for peace will always remember that era. Whenever I think of my life in the nuclear test site, Cheng Kaijia is always full of nostalgia. Because there is the hard work he devoted throughout his life, the glory of his career, his passionate years, and his lingering nostalgia...

Walking forward to the home of Kaijia, you will never associate the owner here with the disciple of modern physics master Born, Heisenberg's debate opponent, the deputy commander of China's nuclear test base, and the founder of China's "two bombs and one satellite".

is furnished here, which is incredibly simple and rustic. After leaving the Gobi Desert, Cheng Kaijia has always maintained the lifestyle of that era and lived a simple and frugal life with books.

Cheng Kaijia never admitted that he was an "official person" in his life: "My mind is full of scientific research and experimental tasks from beginning to end, and it is difficult for me to understand other aspects. Someone said to me, 'You have been an official', and I said, 'I never thought I was an official, I always thought I was just a researcher'."

Cheng Kaijia had many positions in his life, but he never had the word "power" in his mind, only the kind of authority of "authority": "the capable are the teacher."

Cheng Kaijia misses the most in his life, General Zhang Yunyu. He called him "my old comrade-in-arms, my true good friend", "is the nuclear commander in each of us, and the greatest nuclear commander in my heart."

As the commander of the nuclear test base, Zhang Yunyu is fully responsible for nuclear weapons testing; as the technical director of the nuclear weapons testing base and the base research institute, Cheng Kaijia is fully responsible for the technical work of nuclear test. They worked together in the Gobi Desert for more than a dozen years and jointly completed my country's first atomic bomb and various nuclear test tasks.

996, the "great nuclear commander" in Cheng Kaijia's heart wrote a poem and presented it to Cheng Kaijia:

nuclear bomb test Lai Chengjun, making the world in the electronic layer.

The lightest ones are the sky above the sky, and the heavy ones are the yellow earth.

Chinese spirit conceives Pangu, and creates worldly affairs.

technology breakthroughs and encounters difficulties, forget to eat and sleep and make hard work.

The Gobi Desert has become a great achievement, and everyone respects me and calls me a master.

Academician Cheng Kaijia wrote an inscription in his later years: "Innovation, hard work, and dedication."