The King of Boxers (1972)

Plot

Chow, a skilled King Boxer, travels to Thailand to visit a friend who introduces him to her boyfriend, a local Thai boxer. When thugs attack the boyfriend, Chow intervenes, forging a bond between them. He shares his knife-fighting techniques in return. Meanwhile, in China, Chow's brother and sister manage his kung fu school, where a Japanese martial artist named Kurata arrives seeking Chow. After defeating Chow's brother, Kurata takes an interest in his sister. Upon returning home, Chow must confront Kurata to defend his school's reputation and family honor.