I can understand why some people didn't like this, but on the whole I think this was a far superior offering than a lot of kung fu (or however you feel better classifies this type of film) offerings I have recently watched.
(I have been a long time fan of Hong Kong martial arts films, and I am trying to put this review in the context of both 70s/80/s classics as well as more modern takes on the genre. Also I have a wide ranging preference in kung fu films - from the serious, the comedic, through to plush high end productions.)
This film does start slowly, and perhaps is more in keeping with Asian dramas for the 1st quarter of the film. And I can understand why that would not be rewarding for some viewers. But if you hold out a little, as time goes on is increasingly riveting.
The plot, which tends to be incredibly thin in many martial arts films, is relatively rich. While, there are some guessable twists long the way, equally there are some surprising ones.
Perhaps more importantly, the action is very well choreographed and it's lead a very strong fighter. I was really impressed by Jacky Wu's technique - I wouldn't have wanted to be on any of his punches or kicks, and it wasn't all fantasy fight (e.g. loads of wires) either.
It is the momentary lapses in sentimentality that, for me, mark this down from 9 to about 7 1/2 (ish).
In a nutshell: if you can get past the 1st part's (and occasional) lack of pace, this is a well put together, well choreographed film, with a strong lead and impressive martial arts.