Not need.

来源: 于 2015-01-30 19:10:41 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
When the child returns to US, just show his/her US passport and the 旅行证 to the Chinese Customs officer when he/she is out of China, and show his/her US passport to the US CBP officer when entering US.