[missile] The Dongfeng ({zh|s=东风|t=東風|l=East Wind}) missile is a series of intermediate and intercontinental ballistic missiles operated by the People`s Republic of China. Typically, the word Dongfeng is shortened to `DF`, so Dongfeng 9 is written as DF-9. ==History== After the signing of Sino-Soviet Treaty of Friendship, Alliance, ...