The Invincible Armour(1977)

Hwang Jang Lee is a corrupt Ming guard who frames John Liu for murder. A wanted fugitive, John hides out with a teen who is an expert in the infamous Iron Armor technique, a technique that means the expert can withstand anything. However, Hwang is an expert in it as well as the Eagle Claw's. Can John stop Hwang before it's too late?