Emperor, an offshoot of the White Lotus secret society named after this number of trigrams in the I Ching attacked the Forbidden City.
Following the death of WǔdÃ¬, this number of princes from the Sīmǎ family rebelled against the Western Jīn dynasty. During the MÃ­ng dynasty, a type of essay named after this number of sections became standard in the kējǔ ("kuhÂ­joo") imperial examination system. During the reign of the JiāqÃ¬ng ("jyahÂ­ching") Emperor, an offshoot of the White Lotus secret society named after this number of trigrams in the I Ching attacked the Forbidden City. (*) Nurhachi organized his Manchu followers into this number of banners. An alliance with this number of nations relieved the siege of the Legation Quarter during the Boxer Rebellion. For 10 points, name the century in which the Sogdian general Ān LÃ¹shān revolted against the TÃ¡ng dynasty, the century after the one in which that dynasty was founded.
Following the death of WǔdÃ¬, this number of princes from the Sīmǎ family rebelled against the Western Jīn dynasty.
eight  [or bā; accept  eighth  century AD or CE]