Well first of all the CG was rather disappointing I didn't rent the movie to watch CG blood I rented it to watch a martial arts film which is what it is. It has nothing to do with historical facts (No more than say Indiana Jones) It has nothing to do with acting (because the acting was horrible) It had nothing to do with the directors abilities (because they are non existent) It was a martial arts film ( I am a wushu Thai Chi fan) The four leads were Wushu National champions (unlike a previous post that said they were "pretty good fighters" The lead bad guy was also a wushu nation champion) If you just want to watch a martial arts film its fine but if you want history or acting I would say no.
Review of Four Dragons
