This movie suffers from too many titles: Kung Fu – The Invincible Fist, Tiger vs Dragon, Kung Fu – The Invisible Fist, or Death Rivals of Shaolin, and maybe more. It also suffers from poor preservation. I can only hope that somewhere is a decent original copy and it will be restored for digital but that will never happen. The story is easy to follow and all the minor characters and stunt men pull their weight. The only fault I found was sometimes the kicks and punches were about a foot off the mark. I blame that on a cheap budget, it was either another "take" or no lunch today for the crew. Film used to be expensive. So it all comes down to - Chan Sing versus Kurata Yasuaki in the final fight on "Ponte #2".Two real karate guys fight it out bare fists and karate weapons and it was superb. In this reviewers humble opinion, after watching nearly 2000 martial arts movies, that was possibly the best fight filmed in 1972.