What is your visa now?
If you are in H1 or H4, you can apply it again in China. It doesn't matter.
However, if you are in F1 or J1, your 485 will be gone if you re-apply this kind of visa outside of USA.
If you are in H1 or H4, you can apply it again in China. It doesn't matter.
However, if you are in F1 or J1, your 485 will be gone if you re-apply this kind of visa outside of USA.