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Dujiangyan is the oldest man-made water system in the world,
and a wonder in the development of Chinese science. {#blank#}1{#/blank#}(build)
over 2,200 years ago in what is now Sichuan Province in Southwest China, this
amazing engineering {#blank#}2{#/blank#}(achieve) is still used today.
In ancient times, the region in which Dujiangyan now stands {#blank#}3{#/blank#}
(suffer) from regular floods caused by overflow from the Minjiang River. {#blank#}4{#/blank#}
(help) the victims of the flooding, Li Bing, the region governor, together with
his son, decided to 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. {#blank#}5{#/blank#} (good) still, the extra
water could be directed to the dry Chengdu Plain, making {#blank#}6{#/blank#}
suitable for farming.
Once the system was finished, no more floods occurred and
the people were able to live {#blank#}7{#/blank#} (peaceful). Today, Dujiangyan {#blank#}8{#/blank#}
(admire) by scientists from around the world because of one feature. Unlike
modern dams {#blank#}9{#/blank#} the water is blocked with a huge wall, Dujiangyan
still lets water flow through the Minjiang River naturally, enabling ecosystem
and fish populations to exist {#blank#}10{#/blank#} harmony.