《旧唐书·本纪·卷十九》
和邕州的西面相连的南蛮，占据着深邃的黄洞，控制着两江粗犷的百姓，集中了几道的游食之民。近来，由于向该地委派的官员品级太低，军威不能振作，辖境连着内地，却不与海南相接。应当划分岭南为东、西两道，另选能干的官员，授予权柄。
宜分岭南为东、西道节度观察处置等使，以广州为岭南东道，邕州为岭南西道，别择良吏，付以节旄。
The southern barbarians bordering the western side of Yongzhou occupied the deep Huang Cave, and controlled the coarse-mannered commoners along the two rivers, as well as the vagrant people from several circuits. Lately, since the officials sent to this land were too low-ranking, the military might was not impressive. The district bordered upon the interior, but it was not connected with Hainan. Lingnan should be divided into eastern and western circuits, and other competent officials should be selected and given authority.