China has funny taboos about how death/undeath is depicted in media. For example, the Chinese release of World of Warcraft had to be changed so that when your character died you didn't see a body, but instead it was replaced with a tombstone. I'm guessing they didn't take to well to the idea of being chased by corpses in a movie.
In fact, I believe some WoW MOBs that had a corpse-like or zombie appearance were changed to appearing as skeletons in addition to what sojourner
mentions above - so yeah, I don't see Zombie stuff being released in China.