《资治通鉴·宋纪·宋纪四》
所以如今让使节互相往来，劳民伤财，终究没有什么益处，因此不打算遣使回访。
今报使往来，徒为劳费，终无所益，欲不遣使。
Therefore, now that the envoys are visiting each other, it is a waste of manpower and money, and there is no benefit after all, so he did not plan to send envoys to return the visit.