The DF (Chinese: 东风; pinyin: Dōngfēng) was a type of diesel-electric locomotive used in the People's Republic of China. It was first introduced in 1958 and was produced until 1974. It was the first common locomotive in China and was used for both passenger and freight services. The DF3 (Chinese: 东风 3; pinyin: Dōngfēng 3) is an upgraded model of the DF.