I am an immigrant visa for cr 1 Now I have lived in the United States for two years and got a green card of 10. Now I want to go back to work and live in China, okay?

It's no problem to go back to work and life. Buy a plane ticket and go back.

But if you stay in China for too long, it will be more troublesome to go back to the United States. If you stay in China for more than 180 days, your green card will be invalid. Immigration will doubt the necessity of your green card and may withdraw it according to the situation. It is neither automatically invalid nor irreversible. State the reasons for staying in China for a long time, and you can still keep your green card.

However, in order to avoid this trouble, it is recommended to apply for re-entry permit in advance before returning to China. Generally, it can be managed for two years. You can find a lawyer to apply for a visa to return to the United States, or you can go to the immigration website to submit documents and fill out forms as required.

If you want to be naturalized, I suggest that you live in the United States for as long as possible for three years within five years after you get a green card. If you don't intend to be naturalized in the short term, say five years, you can also live in China for three to five years, and then go back to the United States to live for several years before applying for naturalization.