Happy Birthday: Cast
Louis Koo
Siu Nam
René Liu
Siu Mai
Richard Ng Yiu-Hon
Mai's Father
Jordan Chan Siu-Chun
Cheng
Richie Jen
Himself
Carl Ng Ka-Lung
Cheng
Lawrence Chou Chun-Wai
Danny
Wei Wei
Mai's Grandmother
Li Qinqin
Nam's Sister
Macy Chan
Teresa
Bowie Tsang
Lam Wai
Lam Suet
Orderly
Chow Man-Wai
7-Eleven Store Clerk
