《宋史·本纪·卷十六》
二十二日，下诏划分与交趾的疆界，赐给交趾六县二酮。
戊子，诏分画交阯界，以六县二峒赐之。
On the 22nd day, an imperial edict was issued to delineate the boundary with Jiaozhi, and two counties and two dutongs (districts) were granted to Jiaozhi.