I got my fiancee visa in one afternoon. I was sort of an emergency case but they managed to squeak me through.
I was glad to hear FRB's good report but know that in general, for most folks getting a Tourist visa to the USA for a fiancee is nigh unto impossible. It's no better, and some argue worse, than the infinitesimal odds of any other random Chinese person getting a Tourist visa. A LOT of hopeful couples have gotten nowhere trying. Go ahead and apply if you want, but don't count on success.
Money never hurts, of course, but what they're looking for is very compelling evidence that your fiance will return to China...more than just job or family. Children, business ownership, or significant assets in China can help.
I suspect the mass visit FRB mentioned was handled like a group tour to the USA...an American travel agency holds all passports from entry to departure, members are closely monitored through the duration...and the agency agrees to bear some pretty serious responsibility for anyone who goes AWOL...
I hate to keep raining on the parade, but marrying an American absolutely
DOES NOT guarantee the foreign spouse the right to enter or live in the USA.
Spouses from Asian countries, Russia, some others are viewed with considerable suspicion by US Consular staff...there have been way too many scam marriages over too many years.
Getting a Spouse Visa for the USA is a long, arduous and expensive process that culminates in an in-person visit of your fiancee or spouse to the US Consulate in Guangzhou...no other. Until this is done and approved, your spouse won't even be able to board a flight to the USA, much less enter or stay.
Your nearest US Consulate can show you the full process and help you get started. Have your fiancee start studying little details about you...color of your toothbrush, what side you sleep on, and so forth...
Good luck. You'll need it.