You will receive a formal invitation letter for visa from Guangzhou soon. Please get ready to apply for China entry visa in person at one of the following locations (depending on your location):
Chinese Embassy in Washington DC
Chinese Consulate in New York
Chinese Consulate in Chicago
Chinese Consulate in LA
Chinese Embassy in Ottawa
You can also apply for your China entry visa through private travel/passport/visa service agencies (They can apply visas "in person" for you). This may be useful if you live far away from a Chinese Consulate or the Chinese Embassy.
See, for example, some of the following links (found on Yahoo/Google search).
This does not mean we recommend these service agencies. You may find some other agencies
in your local area. You may call them to find out details (they charge fees).