《水经注·卷十三》
祁夷水又往西流，经王莽城南面，又西流，有到刺山水注入。到刺山水发源于到刺山西面，山势高峻，没有人能攀上山顶。
又西径王莽城南，又西，到刺山水注之，水出到刺山西。山甚层峻，未有升其巅者。
Qiyi River flows westward again, passing south of Wangmang City, and further westward, converging with Daoxishan River. Daoxishan River originates from the west of Daoxishan Mountain. The mountain is high and steep, and no one can climb to the top of the mountain.