《新唐书·列传·卷一百四十一》
长庆元年，吐蕃听说唐与回鹘和亲，又侵犯清塞堡，被李文悦击走。
长庆元年，闻回鹘和亲，犯清塞堡，为李文悦所逐。
In the first year of Changqing, Tubao heard that Tang and Huihu were in-laws, and invaded the Qingsebao Fortress again, which was defeated by Li Wenyue.