Mainland media sites have begun to strongly censor discussion of Bo Xilai and entirely unsubstantiated rumors of gunfire in downtown Beijing (an extremely rare occurance in Beijing). Chinese websites hosted overseas, free from censorship, offer a host of unsupported, un-provable commentary on what might have happened in the halls of power. Bannedbook.org, which provides free downloads of “illegal” Chinese books, posted a long explanation of tremors in the palace of Zhongnanhai, sourced to a “person with access to high level information in Beijing,” of a power struggle between President Hu Jintao, who controls the military, and Zhou, who controls China’s formidable domestic security apparatus. The Epoch Times, a news site affiliated with the Falun Gong spiritual movement (which banned in China), has published extensively in English and Chinese about the coup.

Speculation is rife: A Canadian Chinese news portal quoted Deutsche Welle quoting the Hong Kong newspaper Apple Daily quoting a netizen that a group of citizens unfurled a banner in a main square in Chongqing that said “Party Secretary Bo, We Love and Esteem You,” and were subsequently taken away by plain-clothes security forces. A controversial Peking University professor Kong Qingdong, a 73rd generation descendant of Confucius, said on his television show that removing Bo Xilai is similar to “a counter-revolutionary coup;” one news site reported his show has since been suspended…

What we do know, as one message that bounced around Sina Weibo said, is that “something big happened in Beijing.”