Lü Wencheng (吕文成, pinyin: Lǚ Wénchéng, or Lui Man Sing in Cantonese) (1898-1981) was a Chinese composer and musician. He is considered to have been a master of Cantonese music (Guangdong yinyue) and Guangdong folk music. The gaohu was developed, or co-developed, by him in the 1920s from the erhu by raising its pitch and using steel strings instead of silk, and changing its playing position from on the thigh to between the knees. He composed Autumn Moon Over Calm Lake (平湖秋月) in the 1930s and it remains one of the best known works of Cantonese music.