Hocus Pocus
Cantonese Title: Yan Haak Gwai
Mandarin Title: Ren2 He4 Gui3

(1984)
[Actor] [Action]

Producer:
Director: Chien Yu-Sang
Action Director: Sammo Hung's Stuntman Association
Cast: Lam Ching-Ying, Stephen Tung Wai, Law Ho-Gaai, Chien Yu-Sang, Chan Lung, Tai San, Alice Lau Ar-Lai

I believe this is the first time that Lam Ching-Ying donned the robes of his Eternal Sifu character. That alone should be enough to make you go find it.