The start is simply terrible. The first half-hour is so sickeningly stupid that you may as well fast-forward over it, slowing down for the occasional fight scene.
But from there, as the two main characters' fu improves, so does the film. By the last half-hour, when the surviving brother has learned from two different masters, it's great.
Yuen Biao could not have hoped for a better intro to HK film. Despite inevitably suffering from the awful stupid sickly humour which Samo Hung as director shares with Jackie Chan as director, Samo has made this one a great star vehicle to show off Biao's considerable talent. The skipping scenes are already amongst my all-time fave fu comedy memories.
And if you're very quick, you'll spot Lam Ching Ying as one of the casino goons.