Li Chun: Li Chun was a bridge builder in Sui Dynasty. Now people in Xingtai, Hebei Province are all in the city. Zhao Zhouqiao (Anji Bridge) was built from the 15th year of Emperor Kai of Sui Dynasty to the beginning of Daye (595 ~ 605). Zhang, the secretary of Emperor Taizong of Tang Dynasty, wrote in the inscription of Anji Bridge: "The stone bridge across the river in Zhaozhou, the trace of craftsmen in Sui Dynasty, is also strange, and people don't know why." However, Zhao Zhouqiao survived for more than 65,438+0,400 years, which is one of the wonders in the architectural history of China.

Li Bing: In the last years of Qin Dynasty (about 256 ~ 25 BC1year), he was responsible for the construction of Dujiangyan, an early irrigation project in China, at the exit of Minjiang River in Dujiangyan City, Sichuan Province (formerly guanxian), thus making the Chengdu Plain rich.