Mad Mad Kung Fu (1980)

An aging martial arts champion fallen on hard times, nicknamed "Bamboo Stick" after his favorite weapon, comes to the aid of a man whose daughter is being forced into marriage with a powerful outlaw. However, after Bamboo Stick makes short work of the would-be groom, he discovers he's just killed the son of his arch-rival Lung Yung Fang. Lung Yung Fang is furious and swears to get revenge against his rival, and when one of Bamboo Stick's students attempts to save his master, he loses a valuable jade ring, sinking Bamboo Stick into an even deeper dilemma.