TothenorthwestandnorthofBeijing,ahuge,serratedwallzigzagsit39;swaytotheeastandwestalongtheundulatingmountains。ThisistheGreatWall,whichissaidtobevisiblefromthemoon。 ConstructionoftheGreatWallstartedinthe7thcenturyB。C。ThevassalstatesundertheZhouDynastyinthenorthernpartsofthecountryeachbuilttheirownwallsfordefencepurposes。AfterthestateofQinunifiedChinain221B。C。,itjoinedthewallstoholdofftheinvadersfromtheXiongnutribesinthenorthandextendedthemtomorethan10,000lior5,000kilometers。ThisistheoriginofthenameOfthe10,000liGreatWall。 TheGreatWallwasrenovatedfromtimetotimeaftertheQinDynasty。AmajorrenovationstartedwiththefoundingoftheMingDynastyin1368,andtook200yearstocomplete。Thewallweseetodayisalmostexactlytheresultofthiseffort。Withatotallengthofover6,000kilometers,itextendstothejiayuPassinGansuProvinceinthewestandtothemouthoftheYaluRiverinLiaoningProvinceintheeast。WhatliesnorthofBeijingisbutasmallsectionofit。 AMapoftheGreatWall ThemapshowstheWallrunningfromJiayuPassofGansuProvincetoShanhaiPassofHebeiProvince。RepresentativesectionsoftheGreatWallbuiltinMingtimesaresituatednearShanhaiPass,GubeikouandJuyongPass。 BadalingSection TheBadalingsectionoftheGreatWallsnakingalongthemountainsnorthwestofBeijingwasbuiltatthebeginningoftheMingDynastyinthe14thcentury。Being7。8metreshighand5。8metreswideatthetopontheaverage,ithasbattlefortsatimportantpoints,includingthecorners。 Located10kilometerssouthoftheBadalingsectionoftheGreatWallandbuiltinan18。5kilometrelongvalley,thepasshasalwaysbeenanimportantgatewaynorthwestofBeijing。ThenameisbelievedtohaveitsoriginintheworkersandslavesconscriptedtobuildtheGreatWallinancienttimes。CloudTerrace,builtin1345,wasoriginallythebaseofapagodaoverlookingthemainroadofthetownofthepass。Thearchedgateoftheterraceandthewallsinsidethearcharedecoratedwithcarvings。ofelephants,lions,birds,flowersandheavenlykingsaswellascharmsinsixlanguagesSanskrit,Tibetan,Phatspa(Mongolian),Uygur,WestXiaandHan。 MutianyuSection TheMutianyusectionoftheGreatWall,70kilometersnortheastofBeijing,islinkedtotheGubeikousectionontheeastandtheBadalingsectiononthewest。ItisoneofthebestsectionsoftheGreatWall。 TheMutianyusectionoftheGreatWalliscrenelattedforwatchingandshootingattheinvadingenemy。Someofthebattlefortsonthewallareascloseas50metresapart。 JinshanlingSection LocatedinMiyunCountynortheastofBeijing,theJinshanlingpisionoftheGreatWall,liketheSimataipision,belongstotheGubeikousectionofthecolossaldefencebarrier。 ThebattlementsintheJinshanlingpisionoftheGreatWallarebuiltalongtheridgeofamountain,wherethesoldierscanresisttheinvadingenemybytakingadvantageofthehighterrain。 Adecrepitbattlefortatduskoftenremindsoneofthebattlesinancienttimes。 SimataiSection LocatedtotheeastofJinshanling,theSimataipisionoftheGreatWallis3,000metreslongandhas35battleforts。Thewallrisesandfallswiththeprecipitousmountainridge,whilethebattlefortsarelocatedhighupthehills。 Alarmwasraisedbymeansofsmokesignals,atnightbyfire。Smokewasproducedbyburningamixtureofwolfdung,sulfurandsaltpeter。Shotswerefiredatthesametime。Thusanalarmcouldberelayedover500kmwithinjustafewhours。 TheGreatWallinFourSeasons 继续推荐其他英语作文: 关于圣诞节的英语作文 英语作文我的妈妈 英语作文经典句子