In 1955, the international situation was changing rapidly, and the construction of New China was imminent. A wave of returning home was set off among Chinese intellectuals living abroad. Physics professor Zhong Peilin, who studied in the United States, Wang Huaimin, He Yinwei and Huang Kaihua, who studied in the Soviet Union, overcame many obstacles and embarked on the road of serving the country. In 1958, China's first nuclear weapons research institute, Institute A, was established. Wang Huaimin, war hero Tao Zhigang, nurse Yang Jiarong, and scientists such as Peng Xiongfei, Huang Kaihua, and Zhong Xin joined Institute A to start the research and development of atomic bombs. During the research and development process, they overcame many crises such as difficult research and development conditions and natural disasters. Finally, on October 16, 1964, China's first atomic bomb was successfully tested. Everyone was jubilant and devoted themselves to the research of hydrogen bombs and the combination of two bombs. Soon, these two great undertakings also achieved success one after another. Wang Huaimin and Yang Jiarong, Tao Zhigang and Zhong Xin finally entered the palace of marriage on the same day. In 1978, the spring of science finally arrived, but Wang Huaimin was dying of illness due to overwork. In the hospital, he used all his strength to write their names on the title page of the report on civil nuclear power.