《金史·列传·卷四十六》
泰和六年，胥鼎提出了急速转送公文的办法，皇帝听从了，当时人都觉得很方便。
泰和六年，鼎言急递铺转送文檄之制，上从之，时以为便。
In the sixth year of Taihe, Xu Ding proposed a method for urgent delivery of official documents. The emperor agreed, and it was considered very convenient at the time.