One of my top three favourite old-school wild martial arts films.
This is Jackie Chan when he was at his best. Some humour, but sparingly used. Thankfully little of that annoying slapstick that pervades many of his later films. (Good for you if you like that, but I don't. Well, not in a martial arts film!)
This film is up there with classics suich as Snake in Eagle Shadow (Jackie Chan), Iron Monkey (Rongguang Yu), Magnificent Butcher (Sammo Hung), Buddhist Fist (Shun-Yee Yuen), Tai Chi Master -aka Twin Warriors- (Jet Li), and a few others.
Some sources provide a badly editted cut. But other than that, this is excellent chop-socky.
Update: to me, this Hong Kong Legends edition seems much better presented than my original Eastern Heroes one.