Five?

 

 (imdb)

FIVE SUPERFIGHTERS-1979-A dude in black beats up the teacher and students of a martial arts school. He says their Kung-Fu is “lousy”. 3 students vow revenge on the guy but split up almost immediately having a quarrel over who should head north. Meanwhile, a young widow beats up the idiotic Mr. Ma and his two thugs when they harass her. “Hey, that woman's Kung-Fu is pretty good”. Ting Tien, the student who goes north meets and gets beaten up by her, then helps her grind bean curd. Chi, the second student gets in trouble for peeing on a scarecrow (a gambler was hiding in it). He starts gambling but when the gambler's wife breaks up the game, he has to fight everyone. He then gets beat up by a drunk guy who walks funny but becomes his student. The third dummy meets a fisherman, gets beat up then becomes his assistant. While all this is going on, their downtrodden master who thinks the trio has abandoned him, meets Mr. Fu. Tien is a real jerk. Even the widow's blind father gets the best of him. When the trio finally meet again they give the guy in black a good fight but their master's drunken sword technique saves the day.

 Only in a Run Run Shaw production could 4 guys beat up one guy and the fight still be fair. Not sure why the title mentions 5. Director Mar Lo provides good fights and action in this underrated feature.

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