Immigrants, China passport is invalid, how to buy a house in China?

There are two ways to immigrate: one is to get a green card from other countries and belong to China citizens, and the other is to naturalize in other countries, that is, to give up China citizenship and naturalize in other countries. But in any case, the real estate in China belongs to private property and can be held all the time without any problems. But in the second case, if you want to live in China, you have to apply for a visa to China, which will be more troublesome. If you don't let it go back, you won't go back. There is no way, then you can't live in a natural house.