Boyfriend's family is going to immigrate to America. We want to get married and be together as soon as possible. Please ask someone who knows immigration law to help me solve what is better?

1, can we get married before he goes out and apply for a green card to sign me out? What are the conditions? He is F4. Is he going out unmarried?

This is not recommended, because your marriage is likely to make the embassy think that you are faking your marriage for American identity, which will lead to the refusal of the visa. I suggest waiting for your boyfriend to settle down in the United States before returning to China to marry you.

If 1 doesn't work, how long will it take him to get a green card when he goes out? How long will it take to go back to China and marry me? What visa should I apply for? How long is the timetable?

Get it immediately after landing, and apply for a reunion visa after returning home to get married.

If he wants to get a green card for five years before he can become a citizen, he is applying for me to go out. I heard that he will be married for more than two years, right? Then when is the right time for us to get married?

You can apply for a green card to go out without becoming a citizen.

Then we should be apart for at least six years. Is there any way to get together with your boyfriend quickly? Can those who visit visas get a lawyer to become a full member when they get there? What are the conditions?

If you are not married, you can get a tourist visa. When you get a tourist visa, don't mention that you are your boyfriend in the United States, or you will tend to emigrate. If you do it after marriage, you can only do it honestly, and the tourist visa application will not be approved.