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
(718) 826-0477
Signed & Unique Books, Ephemera, and Art in Many Fields.
Book Dealer: Antiquarian & Rare
(914) 471-2369
Architecture and Design Books - For catalogue: email @ JRF.ARCH@GMAIL.COM