How did the Shu Han Dynasty, which was plagued by floods and droughts in history, turn into a rich and prosperous country?

Shu Han, known as the Land of Abundance, is a famous area prone to floods and droughts in history. The reason why it is called the Land of Abundance is also due to the subsequent construction of water conservancy projects that led to the prosperity and development of this area.

1. The Bashu region with frequent droughts and floods

Historically, natural disasters occurred frequently in the Chengdu Plain, especially floods and droughts. The Chengdu Plain is located in the Sichuan Basin and has a relatively flat terrain. The territory includes the Minjiang River, the Jialing River, a tributary of the Yangtze River Basin, and other river systems. Affected by the humid and rainy weather in the Chengdu Plain, there will be heavy rainfall every summer, and wet years and dry years will alternate. Therefore, people in the Bashu region have long suffered from floods and droughts. 2. Construction of water conservancy projects

In order to solve the problem of frequent waterlogging disasters, in 256 BC, the State of Qin appointed Li Bing and his sons to build a water conservancy project here, which is the famous Dujiangyan Project. This project solves the flood disaster problem in the Chengdu Plain. The basic principle of this project design is scientific planning based on the direction of water flow and river diversion. It not only solves the local crop irrigation problem, but also helps rainwater drain out of Chengdu during flood seasons. The plains merge into the Yangtze River. The Dujiangyan water conservancy project includes the excavation of Baopingkou for water intake, the construction of the Yuzui dike and the installation of the Feishayan spillway. Local materials are used and the annual maintenance system is strictly implemented, so that the Dujiangyan project can be rejuvenated after years of use. Local people have solved the problem of waterlogging. 3. The Origin of the Land of Abundance With the construction of the Dujiangyan Irrigation Project, the local small farmer economy in Bashu developed rapidly. Also because the local natural resources in Bashu are the largest in western China, economic development relied on them earlier. In particular, the Chengdu Plain has been China’s granary since ancient times. Local rice cultivation accounts for one-third of the country's crop production. At the same time, agricultural products meet the needs of the province and are also exported to other provinces and regions in large quantities. Not only that, Bashu is also a leader in the country in animal husbandry and forestry. The reason why Bashu is called the Land of Abundance is determined by its unique geographical location and superior natural environment.