First artificial satellite launchedOn April 24, 1970, China successfully launched its first artificial earth satellite.
First nuclear submarine launchedOn July 30, 1970, the land model of the power set of China's first nuclear submarine reached full power. On December 26, the first nuclear submarine moved into the water. In August 1971, the submarine conducted a trial trip and was delivered to the PLA Navy in August 1974. China became the fifth country in the world to own a nuclear submarine.
First color TV setChina's first color TV set was produced in Tianjin on December 26, 1970, marking the start of China's history in color TV set production.
Yuan developed hybrid riceIn 1973, after nine years of research, Yuan Longping successfully developed hybrid rice, a high-yielding breed suitable for various climate conditions. He received the first national top prize for the invention and won the reputation of the "Father of Hybrid Rice."
Chinese character laser-photo-typesetting systemIn August 1978, Wang Xuan, a professor of Peking University, developed the Chinese character laser-photo-typesetting system. The system led Chinese character printing into the electrical and digital age. Wang is recognized as having made the most significant contributions to the modernization of China's press and printing industry.