The Four Shaolin Challengers (1977) on Netflix

Plot summary

Gangsters from the local crime family run a small town until a hawker named Lin Che Jong stands up to them. He is a former student of Wong Fei Hung, and the town's other hawkers and shopkeepers back him, helping him open a kung fu school. The gangsters retaliate, wrecking the school and beating Lin Che Jong badly. Three of his old school brothers arrive and find the town held by corrupt officials and a crime lord, Shao Pei Lee, a fugitive. Shao Pei Lee brings in a band of fighters called the Yangtze Four to take on Lin Che Jong and his brothers, who set out to expose the officials and free the town from Shao Pei Lee.