《水经注·卷十六》
太和年间迁都，把这座城门迁到南边去，渠水从北边乘着渠道地势较高，分成上下两条，经过旧石桥往东流入城中，流过望先寺。寺中有一块石碑，石碑边上，仿效《子丹碑》雕成蟠龙模样，就今天所作而论还算不错，但从仿古的角度看那就差了。
太和迁都，徙门南侧。其水北乘高渠，枝分上下，历故石桥东入城，径望先寺，中有碑，碑侧法《子丹碑》作龙矩势，于今作则佳，方古犹劣。
During the Taihe years, the capital was moved, and this city gate was moved to the south. The canal water was higher from the north, and it was divided into two upper and lower branches, flowing into the city from the east through the old stone bridge and passing by the Wangxian Temple. There is a stone tablet in the temple, and the dragon is carved on the side of the stone tablet, imitating the "Zidan Tablet". It is not bad as far as today's work is concerned, but it is from the perspective of imitating antiques. That's worse.