Swordswomen Three (1970)

Lo Lieh play an ambitious martial artist who wishes to be number one in the martial world. Unfortunately, while he's tough, he's no match for the son of the number one martial artist. Unwilling to wait for the next tournament, he connives to steal the legendary Magic Steel Sword from his bride to be who with her sisters is protecting the sword from unscrupulous martial artists. He easily steals the sword which is half super steel and half super magnet.This way he's able to disarm all his opponents by pulling their iron weapons right out of their hands from across the room. The three sisters team up with the son and try to take back the sword.