Well, Wikipedia says gaming consoles have been banned in mainland China since June 2000. So I don't see the point in having a Chinese section for console games. PC gaming is a different thing, of course.
I think part of the confusion is that there are two release regions over there that share the same region encoding - JP and AS (rest of Asia). In the case of the PS2, they're both encoded as NTSC-J, and so fairly interchangeable, but this is one way that companies were essentially able to get around any restrictions for different areas. If you head over to Play-Asia (which is based in and ships from Hong Kong), NCSX, etc. you'll find just about every Japanese release has an Asian region counterpart, some of which are also really friendly to English-speaking importers.
Stuff like this is why I recently suggested we indicate region encoding in the details for each game, though. Helps clear up a lot of the confusion if you know that the "Chinese" release is actually an "Asian" release because it's encoded a particular way, for example, as opposed to whether it's genuinely exclusive to a particular country that doesn't fit into one of the main release areas.
