Ti Lung
Duel of Fists (; "Quan Ji" or "Kuen gik") is a 1971 Hong Kong martial arts film directed by Chang Cheh and starring David Chiang and Ti Lung. Filmed on location in Bangkok, the story concerns a Hong Kong engineer (Chiang) who goes to Thailand to find his long-lost half-brother (Ti Lung), who is a Muay Thai boxer.