This movie is a half traditional Chinese stories and half video game (CGI that sometimes looks great and sometimes doesn't). It's sort of traditional with lots of spiritual stuff. The production value is pretty high in some set-pieces, and the art direction in general is great. There are also animated cutscenes that are worth the watch (in a style similar to Yoshitaka Amano's art from Final Fantasy).
Sadly, the movie is too silly at times, or too slow and boring in it's development for my taste. It has a very simplistic plot, but I imagine this would have been worth it if done correctly, which is a shame. Some minor parts I really enjoyed (almost everything with the "demon ladies"). A very poor execution drags it down to the floor.
As a Jackie Chan movie it has several action scenes.. that aren't memorable. He isn't as nimble or fun to watch anymore. Overuse of CGI (and I can't stress that enough) and noticeable cables being used in the choreography take you out of it. Also.. farts.
All in all, I'll remember the short animated sequence, the lovely tragedy in it, and forget the rest.