《明史·志·卷六十三》
兖州知府龚弘支持他的说法，于是上奏说： 张鼐看见黄河水势往南流行，所以提出此主张。
兖州知府龚弘主其说，因上言： 鼐见河势南行，故建此议。
Governor Gong Hong of Yanzhou supported his statements, so he submitted a memorial: Zhang Nai saw that the Yellow River was flowing southwards, so he proposed this idea.