When Jet and Jackie were interviewed by the Chinese media, they indicated that they had wanted to make this movie more appealing to Western audiences... and inorder to do that, they had to get the backing from an American studio to help them get into the US market... they also used an American writer to, probably,help cater to the tastes of American audences... ironically, it seems that that has backfired, in terms of the script... the basic story, I think, is from WuCheng'en, a Chinese writer from the 1500's...
needless to say, the reviews from the Chinese media, I think, weren't very positive...