I don't understand

来源: 于 2003-10-10 08:30:00 [旧帖] [给我悄悄话] 本文已被阅读：次

Why must be 180 days or above? I guess everyone has this record to stay here for more than 180 days. You mean it's not good for them to go back to china with this record? Why?
Waiting for your reply!
Thanks a lot!