One of the major dams built in Hu Zi (瓠子), Puyang, Henan was suddenly burst and the river flooded 16 cities by the after-bay.
Due to the blocked watercourse in Hu Zi in the 2nd Year of Yuanfeng (元封二年), the Yellow River changed its course to flow through Xuzhou.
wrote down "Huzi ge" (瓠子歌)[2] to express his sorrow and deep concern for the people in the flooded areas.
In 1077 A.D., the 10th Year of Xining, Song dynasty (宋熙宁十年), the river broke its banks in Tanzhou (檀州).
The flood was just surrounding the city wall of Xuzhou and the depth of the water reached two Zhang and eight Chi (两丈八尺).
In the 5th Year of Longqing (隆庆五年), the river broke and poured into the city from the west gate, which resulted in thousands of houses ruined and countless citizens killed.
In the Abandoned River park, there are five posts standing by the shore with the flood history recorded on them called Shui Jing Shi Zhu Ji (水经石柱记).