how to use chinese in xterm&utf-8

[zx-tan <zx-tan@email.jlu.edu.cn>]

hi

I'm using locale zh_CN.utf-8,and i have learned that xterm can use
chinese in this locale,it support three byte character

i have tried  xterm -fw
-*-simsun-medium-r-normal-*-*-120-*-*-*-*-iso10646-1 -cjk_width,
but it seems something wrong,every time i click it,the cpu usage upto
99%

how can i use chinese in xterm?