Dujiangyan is the oldest man-made water system in the world, and a wonder in the development of Chinese science. (build) over 2, 200 years ago in what is now Sichuan Province in Southwest China, this amazing engineering(achieve) is still used today.
In ancient times, the region in which Dujiangyan now stands(suffer) from regular floods caused by overflow from the Minjiang River. (help) the victims of the flooding, Li Bing, the region governor, together with his son, decided to find a solution. Li Bing, the region governor, together with his son, decided t find a solution. Li designed a series of channels built at different levels along Mount Yulei that would take away the floodwater while leaving the river flowing naturally. (good) still, the extra water could be directed to the dry Chengdu Plain, makingsuitable for farming.
Once the system was finished, no more floods occurred and the people were able to live (peaceful). Today, Dujiangyan is admired by scientists from around the world because of one feature. Unlike modern dams the water is blocked with a huge wall, Dujiangyan still lets water flow through the Minjiang River naturally (enable) ecosystem(生态系统) and fish populations to existharmony.
