Andy Lau as Andy Gigi Leung as Gigi Sean Lau as Ching-wan (Sean) Louis Koo as Louis Cherrie Ying as Cherrie Wong Tin-lam as Ching-wan's Father Bonnie Wong Man-wai as Andy and Louis's Mother Angela Tong as Mahjong Player Wong Wah-wo as Mahjong Player Lung Tin-sang as Fat Uncle's Man Hung Wai-leung as Fat Uncle's Man Yuen Ling-to as Fat Uncle's Man Four Tse Liu-shut Matt Chow