If you're a fan of boxing in general, or muay thai (kickboxing) in particular, you'll probably enjoy this movie. There are several long scenes where boxing matches are shown at length. And if you love Thailand as much as I do, you'll enjoy the many panoramic and scenic sweeps across Bangkok during the 70s. And there are a few good action (non-boxing) scenes as well.
However, when put all together, it was just too dull. The non-action scenes were filmed at a very leisurely pace, highly inconsistent with this genre, and there were too many of these scenes. I was also disappointed that the two great stars, David Chiang and Ti Lung, had not nearly enough time on screen.
Pass on this one.