《水经注·卷十六》
杜预说：翟泉在太仓西南。既说是西南，对洛阳说来就不应在东北，表明那不是翟泉，这是第三个证据。
杜预言：翟泉在太仓西南，既言西南，于洛阳不得为东北，是验非之三证也。
Du Yu said: Zhaiquan is southwest of Taicang. Since it is said to be southwest, it should not be in the northeast for Luoyang, indicating that it is not Zhaiquan, this is the third proof.