《新唐书·列传·卷一百四十一》
太宗文皇帝遵循汉朝旧法，连南山，到葱岭，剖析府镇，烽火相望，使吐蕃不敢内侵。
太宗文皇帝践汉旧迹，并南山抵葱岭，剖裂府镇，烟火相望，吐蕃不敢内侮。
Emperor Taizong Wen followed the old laws of the Han Dynasty, connecting to the southern mountains and reaching the Pamirs, analyzing the prefectures and towns, and looking out for beacon fires, so that the Tufan would not dare to invade.