-If you will work in China or Canada for long period of time, you do not need TN either.
不知我去申请一年的TN之前要不要正式撤销H1的申请,
-You do not need to to anything for the H1. When you get the TN status, your H1 automatically invalid.
因为害怕POE的人说我占着H1的名额还申请TN。
-No such a thing happens.