Warriors Two 1978

Beloved for its combination of thrilling combat choreography and hilarious physical comedy, the film tells the story of a humble cashier who discovers a plot to kill his small town mayor. 

Hua (Casanova Wong) stumbles upon a plot hatched by a businessman to take over the city of Fushan by killing its Mayor. Hua hides out at the home of an elderly doctor and master of Wing Chun. Fei (Sammo Hung) persuades the old master to teach the young cashier Wing Chun, and the three eventually go head-to-head with the villains.