What if American immigrants are super homesick for a year?

During the period of holding a green card, you can return to China for a certain period of time, but in order to maintain your green card status, it is recommended to return to China for no more than half a year at a time. If the return time is expected to exceed half a year or even one year, you need to apply for a re-entry permit before leaving the United States (2-3 months in advance), and keep the evidence that you intend to live in the United States for a long time, so as to return to the United States smoothly next time.

In addition, after holding a green card for five years (three years in some cases), you can apply for naturalization as a US citizen. After naturalization, you don't have to worry about losing your American identity if you live in China for a long time, and then you can live in China for a long time (but at that time you have to go through the formalities of staying in China for a long time).

But it is very important that if you want to apply for American citizenship, you must have lived in the United States for more than five years (or three years, as the case may be) before applying. Therefore, the best choice now is to temporarily return to China within five years (or three years) after getting a green card, but the annual return time should not exceed half a year, and then apply for naturalization in the United States.