The next sentence that Qian Xuesen said that success in learning must be returned is to serve the motherland.

This sentence comes from the movie "Qian Xuesen". In the movie, Qian Xuesen became a student of the world-famous scientist von Kármán. After the founding of New China, he actively returned to China to devote himself to economic and military construction but was blocked by the United States. At the end of the movie, it ends with Qian Xuesen saying that after studying, one must return and serve the motherland.

Qian Xuesen, born in Shanghai, native of Hangzhou, Zhejiang Province, graduated from National Chiao Tung University, world-famous scientist, aerodynamicist, founder of China's manned spaceflight, academician of the Chinese Academy of Sciences and the Chinese Academy of Engineering, two The winner of the One-Star Bomb-Star Meritorious Service Medal, he is known as the "Father of China's Aerospace", "Father of China's Missile", "Father of China's Automation Control" and "King of Rockets".

After returning to China, Qian Xuesen devoted himself to China’s scientific research and worked hard for it throughout his life. In 1956, he served as director and researcher of the Institute of Mechanics, Chinese Academy of Sciences.

In 1958, in order to cultivate talents for the two bombs and one satellite project, the University of Science and Technology of China was established in response to Qian Xuesen’s request to establish an “Interstellar Astronautics College”. Qian Xuesen served as the director of the Department of Modern Mechanics of the University of Science and Technology of China. Became one of the founders of the University of Science and Technology of China.

China’s first atomic bomb exploded successfully on October 16, 1964, China’s first hydrogen bomb air burst test was successful on June 17, 1967, and China’s first artificial satellite was successfully launched on April 24, 1970. . In 1985, Qian Xuesen won the National Science and Technology Progress Special Award as the first winner for his contribution to China's strategic missile technology.