I tried chinese in cyrus's folder name and chinese IMAP client, but something wrong

[Temp]

I tried chinese in postfix+cyrus-imap
and in Outlook Express 5, the "Inbox" is still 
the one in chinese, but the "Sent Items" and 
"Drafts" folders which I saw in english IMAP
client become normal folders,
and there are another folder instead of them
in chinese in chinese name.

so, does IMAP server not provide a uniform interface?
or just the problem of IMAP protocol?
or just my fault to set up something wrong??

yes, the "Inbox" is good at all in chinese.

T