中国的长城TheGreatWallofChinaTheGreatWallofChinaiscalledthe“TenthousandIiGreatWall”inChinese.Infact,it’smorethan6000kilometreslong.Itwindsitswayfromwesttoeast,acrossdeserts,overmountains,throughvalleystillatlastitreachesthesea.Itisoneofthewondersoftheworld.TheGreatWallhasahistoryofovertwentycenturies.ThefirstpartofitwasbuiltduringtheSpringandAutumnPeriod.DuringtheWarringStatesPer...