How can I get a green card when I get married in China?

Is your spouse an American citizen? After you get married in China, he will go back to the United States to apply for immigration for you. If it goes well, I can come to America with my spouse in a year or so. You are a green card after landing, but it is a conditional green card, provided that you can't divorce him within two years, otherwise your green card will be invalid immediately. You may be deported at any time. You have a green card, and you must stay in the United States for at least 180 days every year, otherwise it will automatically expire. If you don't want to live in America now, you'd better wait until you want to settle in America.