Half of Tsinghua immigrated to the United States.

China exchanged 1 1 American pilots for Qian Xuesen to return to China. Of course, this is a superficial condition, and we don't know whether other agreements have been reached behind it. Maybe we won't know until the day of decryption!

1934 After graduating from national chiao tung university (now Shanghai Jiaotong University and Xi Jiaotong University), Qian Xuesen was admitted to Tsinghua University as the seventh G-class student studying in the United States, and then entered the Aviation Department of Massachusetts Institute of Technology, thus becoming the favorite pupil of Von Carmen, a great astronaut in the 20th century.

Qian Xuesen received a master's degree in aviation engineering and a doctorate in aviation mathematics, and became a world-renowned aerodynamicist at the age of 28. During my study and research in the United States, I mainly worked in aerodynamics, solid mechanics, rockets and missiles, and my relevant technical knowledge was at least 5 years ahead. Of course, this is why Qian Xuesen was later persecuted and detained by the United States!

1949 The news of the founding of New China soon spread to the United States. At this time, Qian Xuesen has a strong desire to return to China! Build the country with your own expertise! After the Korean War broke out, the United States set off a countercurrent against capitalism, which also affected Qian Xuesen. It is precisely because of this that Qian Xuesen made up his mind to return to China.

However, contrary to expectations, when Qian Xuesen was preparing to leave for home, he suddenly received a notice from the Immigration Bureau that his family could not leave the United States. Since then, Qian Xuesen has been monitored, investigated, illegally detained and persecuted by the United States! When the news came back to China, China publicly issued a statement condemning this behavior of the US government and actively coordinated Qian Xuesen's return to China.

Of course, Qian Xuesen also actively launched self-help actions. From 65438 to 0955, Qian Xuesen handed a letter wrapped in a cigarette case to Chen Shutong, then vice chairman of the National People's Congress Standing Committee (NPCSC). At the same time, the five permanent members of the United Nations are holding a meeting in Geneva to discuss resolving the North Korean issue and restoring peace in zhina. Ambassador Wang Bingnan, on behalf of China, is also negotiating with the United States on the detention of Qian Xuesen and other China students studying in the United States. When the previous negotiations were not smooth, Ambassador Wang Bingnan put Qian Xuesen's letter written on a cigarette case and its translation on the negotiation table. In exchange, China released 1 1 American pilots captured on the Korean battlefield.

1955 September 17, Qian Xuesen sat with his wife and children in the port of Los Angeles? President Cleveland is on her way back. 1On October 8th, Qian Xuesen finally returned to the motherland.

Qian Xuesen's return to China is inseparable from his firm determination to return to China and the help of the motherland. Although we released 1 1 American pilots, what about Qian Xuesen's attitude towards China? Two bombs and one satellite? The credit and achievements of enhancing the national strength are far greater than what the country has paid before! Qian Xuesen's contribution to returning to China is totally worth it!