Can I return to China if I get a green card in the United States?

If you get a green card in the United States, you can go back to China, but you can't stay too long. In particular, new immigrants are liable to have their green cards revoked by the Immigration Bureau, thinking that you will automatically give up your permanent resident status. If you leave the United States for more than a year, even if you have an American green card, you can't use it to re-enter the United States. So if you plan to stay outside the United States for more than one year, you must apply for a re-entry permit to re-enter the United States. It is best not to stay abroad for more than half a year for green card status, otherwise you will be refused entry and detained when you enter the country. It is really necessary to submit some certificates that you must stay abroad in advance.