Can I retain my China citizenship when applying for American investment immigration?

Of course, you can keep your China nationality. In fact, no matter which investor, from the date of obtaining the conditional green card, must keep China nationality for five years. Only those who have obtained green cards (including conditional green cards) for five years can apply for American citizenship, but they must live in the United States for at least 2.5 years during these five years, that is, they must live in the United States for half a year or more on average. (Sponge Migration Network)