Which model of iphone 11 pro can be used both in America and China?

I need to buy an iphone in America and I will move back to China later. So, I need to make sure the telephone I bought here can be used in both countries.

I found the Model A2217 of iphone 11 pro can be used in China. But without America included in its list. (See here: https://www.apple.com/iphone/LTE/#iphone-11-pro).

Is there anyone know which model I should buy and how? Because when I tried to buy, there's no option for specific model.

Thank you!