《辽史·本纪·卷二十六》
十九日，夏人前来告知宋国在要塞筑城，派使者前往宋国，晓谕宋人与夏国讲和。
辛丑，夏人来告宋城要地，遣使之宋，谕与夏和。
On the nineteenth day of the first lunar month, the Xia people came to inform us of Song's construction of a fortress, and sent an envoy to Song to inform them to seek peace with Xia.