[simcop2387]

It looks like it's GB18030, HZ or GBK. At least those are the ones that render with no unknown characters. I don't read/speak any Chinese dialects so I've got no idea which two encodings are likely gibberish.

[yuhong]

GB18030 is a superset of GBK. HZ is generally used on 7-bit only mediums like Usenet.