This is a tribute to Li Bing during the Warring States Period. When he was ordered by Shu County, he built Dujiangyan water conservancy project to benefit Chengdu Plain. This project is still in blossom.

Dayu was born before Li Bing, and he combined water control with governing the country and the people. While controlling water disasters, it also guides people to restore and develop agricultural production, develop water transport and rebuild their homes. Every time we govern a place, we take the initiative to unite clan leaders, improve political power construction, and let people live and work in peace and contentment. According to historical records, after the flood receded, a piece of plain surfaced. He led people to dig ditches in the fields, divert water for irrigation, plant crops such as millet, millet, beans and hemp, and let people plant rice in low-lying areas. Not only flood control has achieved great success, but also agricultural production has made progress.

Dujiangyan built by Li Bing; The principle of water control is "flood diversion and disaster reduction, water diversion and irrigation", and a comprehensive water conservancy project integrating flood control, irrigation and shipping has been completed. At that time, it was called "Duan Dayan", and later it was called Dujiangyan, which made the western Sichuan plain "flood and drought follow people" and turned it into a fertile field of thousands of miles. It can be seen that Dayu saved people in the disaster, and Li Bing made the western Sichuan plain win the reputation of "abundance", so later generations thought that Li Bing was better than Dayu, so it showed that Dayu was not as good as Li Bing.

There is no right or wrong in this sentence. It can only be said that Dayu and Bing have their own merits.