"Instant Kung Fu Man" a.k.a. (Sha yan gong fu) (1977)
Instant Kung Fu Man, also known as 霎眼功夫 and Sha yan gong fu.
(Synopsis): A mischievous Shaolin disciple, Hsia Hu, uses trickery to graduate from the rigorous monastery without completing his martial training. His mentors, well aware, send the monk Hui Kang to keep an eye on him. Once outside, Hsia Hu soon discovers that people, mistaking him as his twin brother Hsiao Fu, a hardened criminal and Kung-Fu expert, treat him with both fear and respect. He, being too lazy to learn Kung-Fu, begins to relish his Instant Kung Fu Man image and impersonates his brother at every chance. Amusing events take a sinister turn, however, when Yi Lan, Hsia Hu's former accomplice and now sworn enemy, returns to settle a score with Hsia Hu. A duel between Hsia Hu and yi Lan becomes inevitable, at which point, Hsia Hu must decide whether he can afford his new identity or not. His decision leads to an entertaining and unexpectable outcome