Interestingly, when I look at the headers, I can see the following:

  Content-Type: text/html;charset="GB2312"

But when I edit the mail, this header is gone.  I assume Gnus adds it.

Is it possible to tread these articles right?

Oh, and did I mention the following...

  X-Mailer: Microsoft Outlook Express 5.50.4133.2400

:)

Alex.