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Originally constructed around 256 BCE 【小题1】 the State of Qin as an irrigation and flood control system, Dujiangyan is a remarkable example of ancient engineering skill and is still in use today. During the Warring States period, people who lived along the banks of the Min River were troubled by annual flooding. Qin governor and irrigation engineer Li Bing investigated the problem 【小题2】(thorough). He 【小题3】(lead) a team to construct a levee to redirect a portion of the river’s flow. Then they cut 【小题4】 channel through Mount Yulei to discharge the excess water. After the system 【小题5】(finish) no more floods occurred. What’s more, it made Sichuan one of the 【小题6】(product) agricultural regions in China 【小题7】 the redirected water from the Min River could be used for irrigation. If you visit Dujiangyan, you will see an unusual construction 【小题8】 resembles a fish’s mouth. This famous attraction, Yuzui, together with two other important parts namely, Feishayan and Baopingkou, was scientifically designed to control the water flow throughout the year. 【小题9】(recognise) as a UNESCO heritage site, Dujiangyan 【小题10】(irrigate) farms while preventing floods for over 2,000 years.