Where do you go to buy books when your country bans them? If you're Chinese, you go to Hong Kong:

Book Dealer: Antiquarian & Rare
(775) 530-0307
A large selection of geology & natural history being added almost daily. An (more)
Auction House
(804) 290-8090
Established in 1977, Old World Auctions has become the largest auction house (more)
Association
(317) 398-0754
"From Alger to Swift": We embrace academics, researchers, collectors, (more)