https://www.investopedia.com/ask/answers/06/nonusresidenttax.asp#:~:text=Nonresident%20aliens%20aren't%20subject,in%20their%20countries%20of%20origin.
住满180天就是resident alien啦
还要查一下Tax treaty (Sino-US Tax treaty) for everything
slow_quick
2024-08-06 15:23:08住满180天就是resident alien啦