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
(978) 887-4053
Kuenzig Books deals in science, technology, engineering, mathematics, early (more)
Auction House
+44 1285 860006
Established in 1988 Dominic Winter's business has gained an international (more)