See http://www.chinesecj.com

The page identifies itself as GB2312, but it's actually in GB18030,
which is a superset of GB2312. The result is that the page is
partially garbled.

For the GB2312-compatible encodings, Konqueror only supports GB2312
and GB18030.

The user can work around this by manually switching to GB18030, BUT
if the user proceeds with clicking a link to the "traditional
Chinese" version of the site, the pages switches to the Big5 charset,
and the site now becomes completely garbled.

It might be helpful if the charset is automatically upgraded to
GB18030 if a GB2312 characters are seen on a page which claims to be
GB2312.