Gao Pian
Meanwhile, late in 869, Li Shiwang provoked Dali by killing its emissary Yang Qiuqing (). Dali's emperor Qiulong thus launched a major attack on Dingbian, and neither Li nor his successor Dou Pang () was able to repel it. The Dali forces quickly arrived at Chengdu's vicinity and put Chengdu under siege. Emperor Yizong commissioned Gao Pian as Xichuan's military governor, and Dali forces thereafter withdrew, but both Dingbian (which was then merged back into Xichuan) and Xichuan had been deeply wounded.