Cheang Pou-soi (Chinese: 鄭保瑞; Jyutping: zeng6 bou2 seoi6; born 11 July 1972), also known as Soi Cheang or Bob Cheng, is a Hong Kong film director, film producer, actor and former screenwriter. ()
Soi Cheang Pou-soi is a Hong Kong actor, director and screenwriter. He has been mentored by Johnnie To throughout his career.