Gao Lishi
Meanwhile, a rivalry had arisen between An Sishun and his cousin An Lushan, then the military governor of Fanyang Circuit (范陽, headquartered in modern Beijing) and the general Geshu Han, then the military governor of Longyou Circuit (隴右, headquartered in modern Haidong Prefecture, Qinghai). Emperor Xuanzong tried to foster better relations between them, and in winter 752 summoned all three to Chang'an. He had the powerful eunuch Gao Lishi hold a feast for the three of them, hoping that they would reconcile—but the feast degenerated into a bitter argument between Geshu and An Lushan, and it was said that instead of improving relations, it worsened their relations.