>>>>> jidanni@jidanni.org wrote:
> Let's say you make a draft,

>  To: zzz
>  Subject: 測試
>  X-Draft-From: ("nndraft:drafts")
>  --text follows this line--
>  測試

> and save it with message-dont-send (C-c C-d). OK, now later one day
> reenter the *Drafts* group, and view that draft. Now put the cursor in
> that draft's buffer, and hit
>>> e runs the command gnus-summary-edit-article
RS> In a draft summary buffer, `e' runs `gnus-draft-edit-message'.
> I know. I'm talking about when you have already put the cursor into the
> Draft itself, and then you hit e.
>>> Chinese characters present become \333.

The cause is that the "e" key is bound to `gnus-summary-edit-article'
in the article buffer unconditionally.  Here is a patch.  Not tested
thoroughly, though.