《资治通鉴·唐纪·唐纪六十八》
自此以后，中原地区变故很多，朝廷的命令不能及时传达至边远，于是甘州沦陷于回鹘之手，归义军所隶其余诸州也多被羌人、胡族所占据。
是后中原多故，朝命不及，回鹘陷甘州，自馀诸州录归义者多为羌、胡所据。
From that time on, there were many disturbances in the Central Plains and imperial edicts failed to reach the distant regions in a timely manner, so Ganzhou fell to the Uyghurs and most of the other prefectures of the Protectorate of Guiyi were seized by Tibetans and other non-Han peoples.