Cheng Dieyi and Duan Xiaolou are characters in the movie "Farewell My Concubine". They have no real prototypes and are fictional characters.

"Farewell My Concubine" is a literary film produced by Tomson Film Co., Ltd., adapted from Li Bihua's novel of the same name, directed by Chen Kaige, written by Li Bihua and Lu Wei, and starring Leslie Cheung, Gong Li, and Zhang Fengyi. The film revolves around the joys and sorrows of two Peking Opera actors for half a century, showing their thinking and understanding of traditional culture, people's living conditions and human nature. >

Cheng Dieyi and Duan Xiaolou are characters in the movie "Farewell My Concubine". They are fictional and not historical figures. However, it is said that Cheng Dieyi's prototype is Mei Lanfang and Duan Xiaolou's prototype is Yang Xiaolou, but the two people in reality have no plot relationship in the movie.