《明史·志·卷六十一》
二是三河口淤积泥沙深厚，水流湍急，不会没有阻塞，然而建坝拦截，每年进行一次疏浚，担心什么泥沙壅塞呢？
一以三河口积沙深厚，水势湍急，不无阻塞，然建坝拦截，岁一挑浚之，何患沙壅。
Secondly, the siltation at the mouth of the Three Rivers is deep and the water flow is rapid. There will be no blockage. However, if a dam is built to intercept it and dredged once a year, what is the worry about siltation?