This sentence comes from the movie Qian Xuesen. In the movie, Qian Xuesen became a student of the world-famous great scientist von Carmen. After the founding of New China, he actively returned to China to participate in economic and military construction, but was blocked by the United States. At the end of the film, he ended with Qian Xuesen saying that he would return to school to serve the motherland.
Qian Xuesen, born in Shanghai and Hangzhou, Zhejiang, graduated from national chiao tung university. He is a world-famous scientist, aerodynamicist, the founder of manned space flight in China, an academician of China Academy of Sciences and China Academy of Engineering, and a winner of China's two bombs and one satellite meritorious medal. Known as "the father of China's space flight", "the father of China's missiles", "the father of China's automation control" and "the king of rockets".