I'm looking for an old kung fu movie (probably '70 or early '80). The plot is something like this: 2 men escape from prison chained together (they fight a blacksmith like this along the way), lookin' for an old book with a secret fighting technique hidden in a cave by an old master. Searching for them and the book is also an old enemy of the master, who lost his eye in a fight with him (?), wears an eye-patch and uses a staff as his main weapon. The two finally arrive at the cave, find the book and start the training. After a while the badguy arrives and they both fight him till one of them pokes out his remaining eye with his staff after taking it from him and in the end 1 of them holds him and the other crushes his skull with his knees. Please help if it rings a bell. Will rep and be very appreciative.
A wise man told me don't argue with fools
cause people from a distance can't tell who is who