In the fourth year of Wanli (1576), the governor of Tianfu was in Tianfu, and Hu Zhili made a southern tour. In the sixth year (1578), he suggested that the court should give priority to dredging the Wusong River Long Bridge and Huangpu River to comprehensively control the flood disaster in Taihu Lake area in the lower reaches of the Yangtze River. By eight years ago, the tributaries of hundreds of main rivers had been dredged, the largest of which was discharged into the sea, the second led to lakes and rivers, and the third led to irrigation. At the same time, Baimaotang, Xiuzhoutang, Puhuitang, Mengduhe, Shunhe and Qinggang were restored. Please clear the tributaries one after another. With the permission of the imperial court, 80 kilometers of Wusong River was dredged, more than 90 ponds were built, 23 new rivers were opened, 39 old rivers were dredged, and dams 18 kilometers were built in Li Jiahong and Laoyazui. Win the trust of Emperor Ming Shenzong. This made Zhang even more jealous and was slandered by his followers.