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The Long March 1 (长征一号), also known as the Changzheng-1 (CZ-1),[3] was the first member of China's Long March rocket family.[4]

History

Development started in January 1965 as the Seventh Ministry of Machinery Industry issued a design task. The two stage liquid fueled DF-4 was modified by adding a third stage in order to make it to the desired orbit. Long March 1's second flight launched China's first satellite Dong Fang Hong 1 to space on April 24, 1970. The rocket was operational during 1970–1971. Wang Xiji was the chief designer of the rocket.[5]