简介：ModernChineseandinternationalresearchusingnewmethodslikedronessystematicallystudiestheGreatwallofChina.Itsvisibilityfromspaceisalegend,butitssizeactuallyranksasworld'slargestmonument.Itneverwasasinglewall,butasystemofseveralsegments,repeatedlyalteredovertime,insuccessiveattemptstopreventinvasionsfromraidertribes,liketheXiongnu,adaptedtotheterrain,withanelaboratesystemofgarrisontowers,advancedtowerpostsandcommunicationsystem.Buildingandmanningitprovedextremelycostly.ItfailedtopreventtheMongolarmiesofGenghisKhanannexingChina,hisgreatsuccessorKublaiKhanbuiltawallsystemtofithislargerempire.AftertheMingdynastyfinallyexpelledtheMongols,the'primitive'wallswerereplacedbythefinalstoneversion,usingabricktypesolidifiedwithricestarch.Whiletheunprecedentedmobilizationofmeansforconstructionandgarrisonscrippledthetreasury,itproveduselessagainstthe...

• 中华战士 粤语

• 中华战士国语

• 中华料理师

• 中华未来主义

• 中华武术

• 中华武魂