Li Bing (about 302 ~235 BC), born in unknown place, was a famous expert in water conservancy engineering during the Warring States Period.

From 256 BC to 25 BC1year, he was appointed as the magistrate of Shu County (now Chengdu) by Zhao Haoqi, king of Qin.

During this period, Li Bing managed water and created outstanding achievements. The guiding ideology of his weir construction is the Taoist thought of "Taoism is natural" and "harmony between man and nature".

He recruited migrant workers to set up many water conservancy projects in the Minjiang River basin, among which Dujiangyan water conservancy project co-chaired by him and his son is the most famous.

For thousands of years, this project has laid a solid foundation for Chengdu Plain to become a land of abundance.

In memory of Li Bing and his son, the Erwang Temple was built in Dujiangyan.

Dujiangyan has become a famous scenic spot.

After Dujiangyan, he built a water conservancy project in Luoshui Town, Shifang, Sichuan, died here and was buried in Zhangshan Mountain next to Luoshui Town.

Be respected as the master of Sichuan by later generations.

On both sides of the pass between Gaojingguan and Luoshui, next to Luoshui, later generations built Dawang Temple and Erwang Temple to commemorate Li Bing and his son.