"The Magnificent Ruffians" a.k.a. (The Destroyers) (1979)

The Magnificent Ruffians, also known as 卖命小子,  Maai Meng Siu Ji, Mai Ming Xiao Zi, The Destroyers Of The Five Deadly Venoms, The Destroyers is a Shaw Brothers film directed by Chang Chen, starring the Venom Mob. (Synopsis): Yuan Ying Fei is the descendant of the one known as Golden Sword and himself is a master of the technique as well as being boss of the town. He is so a cruel man and has killed his sparring partners with unnecessary blows, causing many martial artists to leave the town with only Guan Ah Yun remaining. Guan is the owner of Wu Wei security bureau which Yuan wishes to buy but cannot bully Guan out as he has an eye for his sister and Guan cannot fight back because any time he tries his sister and mother stop him. Yuan is stuck until he learns of 4 kung fu experts who are passing through the town by eating in restaurants and then taking it in terms to take a beating due to not being able to pay. Yuan tricks He Fei,Yang Zhui Feng, Zeng Qiao and Feng Jia Ji into being his