Page "Emperor Dezong of Tang" Paragraph 32

In 799, for reasons lost to history, Wu Shaocheng, still governing Zhangyi Circuit ( formerly Huaixi Circuit ) at that time, began to pillage the circuits around his.

Emperor Dezong ordered the military governors around Zhangyi — including Yu Di the military governor of Shannan East Circuit, Han Hong ( Liu Xuanzuo's nephew ) the military governor of Xuanwu Circuit, Yi Shen ( 伊慎 ) the military governor of Anhuang Circuit ( 安黃, headquartered in modern Xiaogan, Hubei ), and Shangguan Shui ( 上官涗 ) the military governor of Chenxu Circuit ( 陳許, headquartered in modern Xuchang, Henan ) — to attack Wu.

These generals had initial successes, but without an unified command, they could not coordinate their actions, and around the new year 800, they suddenly collapsed and fled, allowing Wu to capture much of their supplies.

Emperor Dezong put Han Quanyi ( 韓全義 ) the military governor of Xiasui Circuit ( 夏綏, headquartered in modern Yulin, Shaanxi ) in command of the operations, but Han Quanyi was repeatedly defeated by Wu.

At the suggestion of Wei Gao the military governor of Xichuan Circuit and the chancellor Jia Dan, Emperor Dezong pardoned Wu in late 800, ending the campaign.