Xiao za zhong (1973)

Little Bastard searches for the parents who abandoned him as an infant, with the help of Little Beggar. He finds his father, who is a powerful and wealthy manl and is taken in by him and his family. Before long Little Bastard is seduced by his attractive cousin, making Little Beggar very jealous. However, the seduction and family welcome are all part of a nefarious plan.