The QJ (Chinese: 前进; pinyin: Qián Jìn; lit. 'To go forward" or "to advance') was a type of heavy freight steam locomotive introduced in 1956 by the China Railway. The majority were built by Datong Locomotive Factory. The prototypes and early production of the class were designated HP (Chinese: 和平; pinyin: Hé Píng; lit. 'peace'), being redesignated as FD (Chinese: 反帝; pinyin: Fǎn Dì; lit. 'Anti-Imperialism') class during the Cultural Revolution, before becoming the QJ class in 1971.