On August 2nd, 1967, the first ship-to-ship missile developed by China-Upstream 1 finalized. With the continuous progress of science and technology, the "upstream" missile has also been improved, and the improved missile is named "Yinghai" ship-to-ship missile. Since then, China's first generation of ship-to-ship missiles was born. At the beginning of 1960, the development of China navy missiles started at the same time as other services and arms. At that time, a Styx missile was about to be launched from the Soviet Union, which happened to be in an extremely difficult situation after three years of natural disasters. However, the Central Military Commission ordered us to develop our own ship-to-ship missiles by copying Styx missiles. As a result, the Navy immediately organized a test base, and Nanchang Aircraft Factory was identified as an imitation unit, with Li Tongli and Lu Lin successively as chief designers. They started hard imitation work in the barren valleys and bays. This kind of imitation missile is called "upstream" ship-to-ship missile. Trial production started in June 1963. At the end of 1964, researchers braved the severe cold of minus 20 degrees to carry out the land model bomb test on the northwest sandy plain, and then carried out the sea model bomb test and the land full bomb test, all of which successfully obtained all the required data. The sea launch test started on 1966, mainly to verify the overall structural integrity of the missile when it was launched at sea, and to check whether the missile's flight performance, control system, main engine electrical equipment and other systems are in normal working condition. The flight test was completed in August of the same year. In June 1 1, the stereotypes were tested, and the results were excellent in 9 rounds and 8 rounds. Since then, the history of China's inability to produce coastal defense missile weapons has ended, and the history of China's naval equipment development has turned a new page.