Siege of Suiyang

Siege of Suiyang
	Part of the An Lushan rebellion
	; Suiyang during the An Lushan rebellion
Date	18 February – 24 November 757
Location	Suiyang (now Shangqiu, Henan)
Result	Yan victory
Belligerents
Yan	Tang
Commanders and leaders
Yin Ziqi (WIA); Yang Chaozong;	Zhang Xun ; Xu Yuan ; Nan Jiyun ; Lei Wanchun ; Yao Kun ; Lian Huan ;
Strength
150,000+ 130,000 (initial); 20,000 (reinforcements);	9,800 6,800 (initial); 3,000 (reinforcements);
Casualties and losses
120,000 dead	Over 9,400 dead; 36 executed;
	Several hundred to 50,000 civilians eaten

The siege of Suiyang was a military campaign during the An Lushan rebellion, launched by the rebel Yan army to capture the city of Suiyang from forces loyal to the Tang dynasty. Although the battle was ultimately won by the Yan army, it suffered major attrition of manpower and time. The siege was noted for the Tang army's determination to fight to the last man, as well as the large-scale cannibalism practised by the defenders, who in this way were able to hold out longer.