According to old post by xiaobaitu, Generally code 2 means NC cl

来源: 于 2007-04-29 18:04:34 [旧帖] [给我悄悄话] 本文已被阅读：次

see this link :
http://web.wenxuecity.com/BBSView.php?SubID=immigration&MsgID=232989


Anyway, good luck to all of us !