Originally constructed around 256 BC by the State of Qin as an irrigation（灌溉）and flood control system, Dujiangyan is a remarkable example of ancient engineering skill and is still use today. During the Warring States period, people lived along the banks of the Min River were troubled by annual flooding. Qin governor and irrigation engineer Li Bing investigated the problem （thorough）. He led a team （construct）a levee（堤坝）to redirect a portion of the river's flow. Then they cut a channel through Mount Yulei to discharge the extra water. After the system （finish）, no more floods occurred. What's more, it made Sichuan one of the most productive agricultural （region）in China because the redirected water from the Min River could be used for irrigation. If you visit Dujiangyan, you will see unusual construction that resembles a fish's mouth. This famous （attract）, Yuzui, together with two other important parts, namely, Feishayan and Baopingkou, was scientifically designed to control the water flow throughout the year （recognize）as a UNESCO heritage site, Dujiangyan has irrigated farms while （prevent）floods for over 2,000 years.
