Johnnie To Director, Producer Ka-Fai Wai Director, Screenwriter, Producer Andy Lau Andy Actor Ching Wan Lau Mahjong Master Actor Louis Koo Tin Lok Actor Gigi Leung Gigi Actor Cherrie Ying Cherrie Actor Tian-lin Wang Fat Uncle Actor Angela Tong Mahjong Player Actor Bonnie Wong Andy and Tin Lok's Mother Actor Matt Chow Mahjong Player Actor Tin-Sang Lung Fat Uncle's Man Actor Hung Wai-leung Fat Uncle's Man Actor Nai-Hoi Yau Screenwriter Kin Yee Au Screenwriter Cheng Siu-Keung Cinematographer Wing-cheong Law Film Editing Chi Wai Yau Film Editing Bruce Yu Art Director Ray Chan Set Decoration Simon So Set Decoration