An Lushan revolts against Chancellor Yang Guozhong at Yanjing, initiating the An Lushan Rebellion during the Tang dynasty of China.
The chancellor (Chinese: ; pinyin: zixing) was a semi-formally designated office position for a number of high-level officials at one time during the Tang dynasty of China. This list also includes chancellors of the short-lived Wu Zhou dynasty, which is typically treated as an interregnum of the Tang dynasty by historians.
An Lushan or An Lu-shan (20th day of the 1st month 19 February 703 – 29 January 757) was a general in the Tang dynasty and is primarily known for instigating the An Lushan Rebellion.
An Lushan was of Sogdian and Göktürk origin, at least by adoption. He rose to military prominence by defending the northeastern Tang frontier from the Khitans and other threats. He was summoned to Chang'an, the Tang capital, several times and managed to gain favor with Chancellor Li Linfu and Emperor Xuanzong of Tang. This allowed An Lushan to amass significant military power in northeast China. After the death of Li Linfu, his rivalry with General Geshu Han and Chancellor Yang Guozhong created military tensions within the empire.
In 755, An Lushan, following 8 or 9 years of preparation, instigated the An Lushan Rebellion, proclaiming himself the ruler of a new dynasty, Yan.