Can I get a 120 day visa for China? Will I have to buy my return flight before I apply?

1. Yes, you can ask for a 30 day extension at the local Exit-Entry Administration10 days before your visa expires.
2. Return flight is not needed. You need to submit the following documents:
(1) The original passport;
(2) A 2 inches colored photo with white background;
(3) Registration Form of Temporary Residence;
(4)Proof of Financial Status.