Yang Zhenning and Deng Jiaxian are both high school classmates and good friends, and they are spread as beautiful talks in the world scientific community.

On the afternoon of September 22nd, a seminar on Mr. Yang Zhenning's academic thoughts-Mr. He Yang's centenary birthday, co-sponsored by Tsinghua University, Chinese Physical Society and Chinese University of Hong Kong, was held in Tsinghua University. At the meeting, Mr. Yang Zhenning delivered a speech on the topic of "I wish people a long time, and thousands of miles go the same way". In his speech, Yang Zhenning recalled his past with his good friend Deng Jiaxian.

In p>1971, Yang Zhenning visited New China for the first time. At that time, besides visiting his father in hospital, he also met many relatives and friends, the most important of which was Deng Jiaxian, his closest friend. ?

Deng Jiaxian is Yang Zhenning's bosom friend in middle school, university and the United States, and he is also the "Two Bombs Founders" who organized and led the research and design of nuclear weapons in China. ?

Yang Zhenning read in an American newspaper that Chairman Mao sent a plane to northern Shaanxi to take American physicist Joan Hinton to Beijing to help China build an atomic bomb. During his four-week visit in 1971, he always wanted to verify whether the story of Joan Hinton's participation in the research and development of China's atomic bomb was true or false. But this is a sensitive issue, and it is difficult for Yang Zhenning to speak. ?

When he was about to leave China, Yang Zhenning finally couldn't help asking his friend Deng Jiaxian if China's atomic bomb was built by China people without the help of foreigners. ?

That year, Deng Jiaxian wrote a long letter to Yang Zhenning, saying that he had verified that there were basically no foreigners involved in China's atomic bomb. At the end of the letter, Deng Jiaxian wrote: I hope that people will go together for a long time. At that time, Yang Zhenning didn't understand this sentence. Fifty years later, Yang Zhenning responded to Deng Jiaxian's letter. He said, "I think that 5 years later today, I can say to Deng Jiaxian: Jiaxian, I know what you mean by" * * * ",and I can confidently tell you that I will meet your expectation of" * * * "in the next 5 years, and I believe you will be satisfied."

each is king?

The friendship between Deng Jiaxian and Yang Zhenning has not been diluted by time and geography. They have been working hard for their respective goals. ?

in the early 196s, China's atomic energy industry entered a "bottleneck" era. At that time, the Soviet Union unilaterally terminated the national defense new technology agreement signed by the two countries, which led to China "standing on the ruins" at that time. Deng Jiaxian, who has been engaged in nuclear physics research, quietly shouldered this burden and became the head of the theoretical design of the atomic bomb. ?

Deng Jiaxian led several college graduates, together with researchers in cutting-edge fields, to successfully explode the first atomic bomb in October, 1964, despite many difficulties such as lack of information, poor equipment, short time and bad environment. After two years and eight months of experiments, he successfully made a hydrogen bomb and became the pioneer and founder of nuclear weapons development in China. ?

After receiving his doctorate, Yang Zhenning entered the Princeton Institute of Advanced Studies and cooperated with Li Zhengdao. Yang Zhenning is very talented in physics and mathematics, his brain is also very flexible, and he likes to study hard. One year after he entered school, he put forward the first composite model of elementary particles with Enrique Fermi. ?

Later, Yang Zhenning and Li Zhengdao put forward the theory of parity non-conservation, and both won the Nobel Prize in Physics in 1957. Later, Yang Zhenning joined the United States in 1964 and returned to China in 1971. He was the first famous American scholar to visit New China, and because of him, many Chinese American scholars began to visit China and contribute to the cause of science and technology education in the motherland.

what are the above references? Phoenix Net-Yang Zhenning's centenary speech recalled Deng Jiaxian: "I hope people will live for a long time, and thousands of miles will go the same way."