Facebook is blocked in China but Zuckerberg was there to meet with the top brass at Baidu, the search engine of choice/availability for Chinese people. It’s doubtful that the Chinese government would throw open the gates for something as free speechy as The Face but they could conceivably allow a censored version of the site with some sort of back door mechanism for government censorship on the fly. But would Zuckerberg go for that? A lot of people, a lot of money, a lot of power, a lot of compromising.