TheDujiangyanDam,45kmnorthofChengdu,isanancienttechnologicalwonderofthecountry.Morethan2000yersago,LiBing(250-200BC),asalocalgovernoroftheShuState,designedthiswatercontrolandirrigationdamandorganizedthousandsoflocalpeopletocompletetheprojecttochecktheMingjiangRiver.Formanyyearstheriver,floodedtheChengduagriculturalareaandlocalfarmerssufferedalotfromthewaterdisaster.Duetothesuccessoftheproject,thedamautomaticallydivertstheMingjiangRiverandchannelsitintoirrigationcanals.Formanyyearsthedamhascontinuedtomakethemostofthewaterconservancyworks. 　　Expansionhasbeenundertakensince1949andatpresentthesystemdoesagoodjobofirrigatingfarminglandacross33countiesofthewesternpartofSichuanProvince.Localpeoplefeelproudofthesystembecaudeithassupportedalargeamountofpeopleintheirdailylife.