我想用我的护照出入境时间做证据,你看行不?
-Yes, Exit/Entry stamps in your passport by the Chinese Customs officer and the US CBP officer is very important evidence, but you had better provide more evidences such as: proof of travel arrangements, proof of your physical domicile (rental agreements, local driver license, employment proof-tax return & wage proof, etc.), document where and how you have been living, what you have spent those 24 months doing. The more documentary evidence you can present on this overall issue, the better.