当天可以拿护照

只要你能出示机票，当天就可以拿护照，google for a passport agency, call to make an appointment, then just go there, the average waiting time is about 30 minutes.

After getting the US passport, you can either apply for a PRC visa and get it on the same day or fly to Hong Kong and get a PRC visa there through your hotel or any travel agency, also within one day.