Sing je wai wong (1992)

A girl and a boy are separated when children, after watching a gun fight between their fathers' gangs. Thirty years later, Sheila Cho leaves with her now much more rich owner of a large casino business in Hong Kong, who keeps doing dark businesses with the Japanese yakuza, and Dee Feng has become rich in the United States. Time and distance do not stop their reunion - with Feng intent on revenge.