Li Bing was a famous water conservancy engineer during the Spring and Autumn Period and the Warring States Period. At the same time, he also knows a lot about astronomy and geography, so he is also an astronomer. As a water conservancy engineer, Li Bing has made great achievements, among which Dujiangyan, a famous water conservancy project, is the most famous. This is a great building standing at the mouth of the Minjiang River. It is precisely because of its existence that Sichuan, Chongqing and other places will have such brilliance.

Dujiangyan, as one of Li Bing's most famous achievements, was not only because of its large scale, but also because of its powerful function, which was of great benefit to Qin State at that time. Since then, Sichuan no longer suffered from floods and droughts, and the fertile land created the land of plenty at that time, which also provided strong support for the later unification of the vassal States by Qin State.

Dujiangyan consists of three parts: diversion weir, flying sand weir and treasure bottle mouth. These three parts are large in scale and reasonable in layout, which play a triple role in flood control, irrigation and shipping. Up to now, this project has a history of more than 2000 years, but it still stands on the Minjiang River, playing a great role in water storage, flood control, waterproof and drought prevention. Such a building is also very rare in world history.

In addition to Dujiangyan, Li Bing has made many achievements, such as setting up a draft gauge for the first time, which is the earliest water level observation facility in China, dredging navigation channels in other areas of Sichuan, such as Yibin and Leshan, turning the shoal into a canal for communication and business with the outside world, and building irrigation and shipping projects in Wenjing River, Baimu River, Luoshui and Mianshui, making this Sichuan rich and powerful.