《明史·志·卷五十九》
更时常疏通梁靖口下游，又挖仪封半月形河道注入到那里，达到小浮桥，则北岸水势就可以减缓了。
更时疏梁靖口下流，且挑仪封月河入之，达於小浮桥，则北岸水势杀矣。
The downstream of Liangjingkou should be dredged more frequently, and the Yifeng Crescent River should be dug into that place to reach the small floating bridge, then the water on the north bank can be slowed down.