By the way

來源: 於 2005-07-13 12:08:14 [舊帖] [給我悄悄話] 本文已被閱讀：次

This is a wrong statement:
他出境中國得用有效的中國的旅行證，不能用美國護照

The US passport must be used to leave China in whatever situation, because passport itself is the most basic travel document in addition to a citizenship doc.