Shang Yang; Upright and upright, not afraid of powerful people, dare to explore, Li Bing; The first point of being pragmatic and enterprising is diligence. Li Bing was the second prefect of Shu County after Qin destroyed Shu. At that time, Shu county needed to develop economy and stabilize society; There is an urgent need to increase materials to support the central unified war. It is urgent to control water, reduce disasters and develop agriculture; It is an important task for us to control water, dredge rivers everywhere and facilitate transportation. He led his troops to "cross the Lijiang River, Yongjiang River, check other tributaries of the River, and sail across the county"; "chisel away from the pile, and the water will hurt the second river in Chengdu"; "From the weir, across Yang Mo, into Jiangxi"; "Stone-piercing rhinoceros creek is in the south of the Yangtze River and among rhinoceroses"; "Ice is connected with the river, and Wenjing River, Lin Qiong, Mu Bai and Meng Xi meet"; "It also leads Luotong Mountain to Luoshui ... via Shifang, Xi, Biejiang and Huixin Dadu"; Guide Mianshui (Mianyuan River) and cut cliffs (on the Minjiang River in Leshan); Open up paddy fields, build seven bridges on the second river, and cross salt wells and ponds. I have done a lot of practical things and achieved brilliant results.

The second point is the scientific spirit of doing things. To control water and guide rivers, it is necessary to distinguish between "which is higher and which is lower" and "follow the trend of nature". A visit to Tianpengque in Shebian County in the upper reaches of Minjiang River is to know geography; "The harm of foam water", we also know the change of water quantity caused by season and climate, when it is harmful, the amount of river water and when it is harmful to flood. These are astronomical figures. Taking these factors into account is to respect nature. Which is better or worse is the natural trend, and "adapting to local conditions" conforms to nature, so as to properly choose the site of the project and adopt corresponding supporting facilities for the project, so as to achieve the purpose of transforming nature and benefiting mankind.

The third point is the style of hard work. Li Bing is the magistrate of Shu County, and his official position is the highest. However, he took the lead in various projects, personally went to inspect the mountain to determine the project site, and inspected the people's feelings and construction environment, so he was able to "adapt to local conditions and use local materials". Due to my personal measurement and investigation, I can determine these two water level scales on Shi Sanren, "There is not enough water: there is no shoulder to fill".

Fourth, forge ahead and create a great cause. Li Bing didn't stay on the basis of predecessors in harnessing water and prospering Shu. Li Bing brought Dayu's "Bie is a lump in the East" and Bieling's "Jueyushan" into Dujiangyan water conservancy project system, which became an organic part, inherited the achievements of predecessors, but had a newer and more ambitious development, and its role was not only flood control, but also actively generating profits, transporting grain and irrigating fields. Li Bing also rectified the Dadu River, Luoshui River, Mianyuan River and other rivers, which had never happened before. Li Bing is the first person to comprehensively improve the water conservancy in Shu County (western Sichuan) in history, and laid the basic pattern of water conservancy in western Sichuan.