which locale? plz clarify me

[zhaoway <zhaoway@xteamlinux.com.cn>]

which one to use? plz?
zh_CN.GB2312 as found in kde and many more, or
zh_CN.EUC as found in TurboLinux-CN, or
zh as found in XFree86, or
zh_CN and zh_TW like others been found in glibc/locale.alias?

and why? which one's debian's prefer? plz clarify me.... sleepy.....

-- 
zhaoway
message-of-night:
DOS: n., A small annoying boot virus that causes random spontaneous system
     crashes, usually just before saving a massive project.  Easily cured by
     UNIX.  See also MS-DOS, IBM-DOS, DR-DOS.
(from David Vicker's .plan)