《水经注·卷二十》
元嘉十九年，宋太祖派遣龙壤将军裴方明讨伐杨难当，杨难当带着妻子儿女向北逃奔，安西参军鲁尚期追出塞峡，指的就是这个山峡。
元嘉十九年，宋太祖遣龙骧将军裴方明伐杨难当，难当将妻子北奔，安西参军鲁尚期追出塞峡，即是峡矣。
In the 19th year of Yuanjia, Song Taizu sent Longrang General Pei Fangming to attack Yang Nandong. Yang Nandong fled to the north with his wife and children. The Anxi military adviser Lu Shangqi pursued him out of Saixia, referring to this gorge.