How long does it take to immigrate to the United States to get citizenship?

That's not a temporary green card, but a conditional green card.

Five years after you get this green card (you can start applying in four years and nine months),

If you meet the requirements of naturalization, such as the length of residence, no criminal record and no moral problems, you can apply for naturalization.

However, your question is, if you have a conditional green card for two years, apply for cancellation of the conditions.

If you can't cancel the conditions successfully, your green card will be cancelled, and there is no way to talk about the following.

So far, it seems that the projects invested by Chinese mainland have not heard the conditions for a smooth termination.