Wuwei, Gansu
Geshu Han first served under Wang Chui (), the military governor ("jiedushi") of Hexi Circuit (河西, headquartered in modern Wuwei, Gansu). He later served under Wang Chui's successor Wang Zhongsi, and, on one expedition that he commanded, an officer of the same rank was his deputy, but, because they were of the same rank, refused to follow Geshu's orders. Geshu had him executed by hammering, and this shocked the other officers into submission. He later distinguished himself in defending against multiple Tufan attacks.