Thanks for your reply.
It happens with -Q option.
Would you please give me some hint about the workarounds? Thanks a lot.

On 1/12/08, Jason Rumney <jasonr@gnu.org> wrote:
> Óá½à wrote:
> > Hi,
> >   I can't input any Chinese with system's input methods. Buffer echoes
> > nothing when typing Chinese, and then echoes a "?" if you try to input
> > anything other than Chinese (e.g.: letter 'a'). It's ok if you are
> > yanking Chinese to buffer or using leim Chinese input method. So far as
> > I know, at least 3 Chinese users met the same issue. Would anyone
> > please help us to check it? It may be caused by recent checkins, since
> > I update the code every week.
> >
> Does it happen with emacs -Q?
>
> You may have some workarounds in your .emacs that are no longer needed.
>
>