The Kung Fu Instructor (1979)

Kung Fu master Wong Yang (Ti Lung) is resented by the other schools in the area because he does not follow the principle "a master should never teach his students everything he knows". Also because he's much better at kung fu than them, no doubt. Tyrant Meng (Ku Feng) wants Wong to teach his skills to his clan, and conspires with the other schools to frame him for murder, then offers him refuge in exchange for his tutorship.

The Kung-Fu instructor is another winner from Sun Chung, with a strong story and script that provide Ti Lung with a majestic, powerful character that he clearly relishes playing (Wong Yang is in some ways reminiscent of Jet Li's Wong Fei Hung). The film features some superb fight scenes and training scenes, with Ti Lung clearly in excellent form and choreographers Tang Chia and Huang Pei-Chi coming up with some superb ideas. Production values are high, with the only negative to the film being some poor acting from a few cast members (e.g. Wong Yu is rather annoying, and seems to think he's Fu Sheng).

Doesn't quite make it to "classic" status because of the acting and a lack of a real hook to distinguish it from other films of the genre... but it's close.