If you need a tourist visa you need to take the following:
Passport, Invitation/voucher (fax copy or email print-out is ok), photocopies from the main page in the passport, the Chinese visa and the invitation. Plus if you are from a country that needs to show a medical insurance then don't forget it.
The consulate is open Monday, Wednesday, Friday morning. It has info on the wall outside. Be prepared to line up for several hours, so go early. They only let in about 2 people at the time. Fees can be paid in Yuan or Dollars and depend on the speed and your nationality.

