For 10 points, name this Turkic general who led a namesake rebellion in 756 CE which led to thirty-six million deaths.
His name in Sogdian was believed to mean "light". He was a favorite of Emperor Xuanzong's concubine, Yang Guifei, who later adopted him as her son. Consequently, he was named governor of three frontier provinces and given an army of one hundred sixty thousand. However, after Li Linfu died, this man came into conflict with the new chancellor, Yang Guozhong. In response, he sacked the city of Luoyang and the following year, he created the so-called Yan dynasty after capturing Changan, the capital city of the Tang Dynasty. For 10 points, name this Turkic general who led a namesake rebellion in 756 CE which led to thirty-six million deaths.
His name in Sogdian was believed to mean "light". He was a favorite of Emperor Xuanzong's concubine, Yang Guifei, who later adopted him as her son.
An Lushan