Qian Xuesen (played by Chen Kun),

In the 1940s, Qian Xuesen (played by Chen Kun), a tenured professor at the California Institute of Technology, was hit by anti-communist rhetoric in the United States. His research on cutting-edge technology was forced to suspend and was ordered to leave the country. Qian Xuesen’s heart is about the motherland, and his return is like an arrow, and the United States, aware of Qian Xuesen’s great value, has set up numerous obstacles to his return, and even arrested Qian Xuesen for espionage. In the end, the acquitted Qian Xuesen was placed under long-term house arrest at home. 　　 Qian Xuesen wrote a letter to get in touch with the motherland, Zhou Enlai ordered 11 American war criminal pilots to exchange for Qian Xuesen. 　　 Facing the new China’s technology, talent, and industry gaps, Qian Xuesen led scientific researchers to start with imitation, gradually research and improve based on existing technology and conditions, and laid the foundation for Chinese missiles.