After having sat through this film, I find the inordinate amount of reviews touting this film as the end all of "disturbing" films rather strange. I did think the reviews had something unrealistic to them, almost theatrical. My only explanation is that someone with a lot of time and/or friends decided to play an elaborate joke on the unsuspecting IMDb reader and filled the commentaries with unrealistic histrionic reviews on how "frightening" the movie is. Yet, again, the reviews are very sparsely distributed in the year 2006. I just don't know what to think. What I can tell you is this: This film is not frightening, it is not disturbing, it isn't even remotely disgusting save for some lame scenes with bugs being puked out. Big deal, really. The majority of the film is just a guy running around from one "wizard" to the next to try and find out what evil wrongdoing his grandfather had done, which is assumed was the cause for the spell that killed his sister.
Seriously, the majority of reviews here must be some kind of joke. There simply is no other explanation. This film is too obscure to have somehow gotten into the hands of the kind of people who would unsuspectingly expect a Disney movie and then get "disturbed" by this of all movies. For cryin' out loud. If you are still not convinced, see ray1979, EVOL666, and ComixComix comments as well for a more realistic picture.
That said, I give the film a four, simply because it is decent for what it is: slightly cheesy, typically melodramatic Hong Kong "horror" fare.