简介：ChinesegeographerLiDaoyuanwasprobablythefirstperson,about1:500yearsago,todiscoverHelanshanrockengravings.Inthefifthcentury,LifraveledextensivelythroughoutChinatoconductgeographicalsurveys.HediscoverdetherockengrayingsalongtheriverbedoftheYellowRiver.HewroteabouthisdiscoveriesinhisCommentaryontheWaterwaysClassics.Liisfirstknownpersontohaverecordedrockengravings.China,ofcourse,wasthefirstcountryknowntorecordrockengravings.The10,000rockengravingsontheHelanshanMountainshavebeendesignatedworldculturalheritagerelics.
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