Hero of the Time
一代英豪 (original)
A gang leader’s reign of terror over a small town is threatened by a government agent, so he unleashes a master of kung fu to knock out the avengers.
Starring Dorian Tan Tao-Liang, Tsung Hua
Watch "Hero of the Time" on Amazon released in 1979. It's a action & adventure movie, and has a rating of 3.5 out of 10 from Imdb which is fairly low for this kind of movie, and is currently only available for purchase or rent.