Mantis Fists and Tiger Claws of Shaolin

When the local thugs harass a restaurant owner's daughter Shuang Shuang,
a newcomer Pai fends them off. When Pai goes off to the local brothel to find his long lost sister, the thugs rape Shuang Shuang, but get killed mysteriously later in the woods. The father of the thugs, Hung Chun Piao, believes that Pai committed the murders and confronts him...
(Source:
IMDB)