AFAIK, you might additionally require to submit (within 30 months from the priority date) an inventor's oath or declaration, copy of amendments (if any) to the claims under Article 19 of the PCT, copy of the International Search Report, an English language translation of the annexes of the International Preliminary Examination Report (IPER), Micro Entity certification (if any), credit card payment form (Form PTO-2038) and Power of Attorney (if any) among others. You may visit the link wipo.int/pct/guide/en/gdvol2/annexes/us.pdf for further details.

Are you asking whether you require to submit any other documents at the USPTO? Do you also wish to know whether you can file national phase applications in other countries in addition to filing it in the US?

Yes and that's why one may consider filing a PCT application and subsequently file a national phase application in China claiming priority from the provisional filed in the US.