Odd Couple (1979) with Sammo Hung and Lau Kar Wing
Odd Couple (Chinese: 搏命單刀奪命搶) is a 1979 Hong Kong film directed by Lau Kar Wing, who also stars, alongside Sammo Hung. It was the first film to be released by Gar Bo Motion Picture Company (aka Gar-Bo Film Company), an independent production company set up by Hung, Lau and producer Karl Maka. The fight scenes are mainly weapon-based, with particular emphasis on the contrast between the dao (sword) and qiang (spear).
Plot: Two aging martial artists get together once a year for a timed duel. One is master of the short sword, King of Sabres (Sammo Hung), and the other is King of Spears (Lau Kar Wing). Every year the fight ends in a draw, and as the masters are getting old, they decide the best course of action is to each take on a student to determine who is the better teacher. They agree to meet up again 10 years later, with their students and let the next generation carry on the duel.