Accordingly, do I need to transfer my US visa to my new passport?
No. If your visa is still valid you can travel to the United States with your two passports, as long as the visa is valid, not damaged, and is the appropriate type of visa required for your principal purpose of travel.
Similarly, can China visa be transferred to new passport? I get a new passport, but I have a valid Chinese visa in my old passport. Yes, you may travel with both passports provided that your visa is still valid and the personal details including your name, sex, date of birth and nationality on both passports are exactly the same.
Also asked, what happens to US visa when passport is renewed?
It is very straightforward, you can enter US using the same US visa, as long as it is valid and your passport issuing country are same, including the passport type. It very clearly tells that you do not need to go for new visa stamping, if the visa in expired passport is valid and in good condition without any damages.
Can I travel with old passport?
By the way, you won't be allowed on a domestic flight with an expired passport either. Once it's expired, the travel document is invalid. Bottom line: you can't take the plane with an expired passport. You need a new passport.
