The first month of the second year of Emperor Suzong's reign in the Tang Dynasty (757 AD). Zhang Xun moved from Yongqiu (now Qixian County, Henan Province) to Suiyang and joined forces with Xu Yuan. Then Anlushan's general Yin Ziqi led an army to besiege Suiyang.
It was the ninth day of the tenth month of the second year of Emperor Suzong's reign in the Tang Dynasty (757 AD).
- At this time, the city was running out of food and supplies, and most of the defenders starved to death or died in battle. Suiyang City was finally captured by the rebels. Zhang Xun, Nan Jiyun, Lei Wanchun and other generals were captured and killed after being scolded as thieves.
Although this battle finally ended with the fall of Suiyang, Zhang Xun, Xu Yuan and others, with less than 7,000 defenders, contained and annihilated as many as 120,000 elite Anshi rebels. This not only bought the Tang government valuable time to organize a counterattack, but also protected the Jianghuai wealth center, and played a decisive strategic role in quelling the "Anshi Rebellion".
