Dirty Tiger, Crazy Frog

Dirty Tiger, Crazy Frog Chinese is a 1978 Hong Kong kung fu film directed by Karl Maka, starring Sammo Hung and Lau Kar Wing. The two leads also shared action directing duties. The film was one of two along with Odd Couple produced by Gar Bo Motion Picture Company, a company formed by Hung, Maka and Lau created.

Source: Wikipedia