Two Fists Against the Law
Three expert martial artists face their most ruthless nemesis when an opium kingpin, armed with flying blades and high kicks, faces them down.
Starring Hwang Jang-Lee, Melvin Wong Gam-Sam, Alan Chui Chung-San, Yi-Hsiung Chi, Hui Yuen, Yang Chung-Hsien, Fat Tsui, Ti-ko Chen, Chiang Kam, Ming Fung
Watch "Two Fists Against the Law" on Amazon released in 1980. It's a action & adventure and action movie, and has a rating of 3.9 out of 10 from Imdb which is fairly low for this kind of movie, and is currently only available for purchase or rent.