Big Family (1976)

Classic Kung Fu action film. Dragon villain Shek Kin stars as the leader of a traditional Hong Kong rich family, who are also expert fighters. One of the sons gets on the wrong side of a triad Kingpin when he beats his best fighter (Bolo) in a tournament. In revenge the Kingpin gathers all his best fighters to beat the kid and his family. The father steps up to the challenge and takes things to another level.