Todaywewillvisitthecitywall,thebelltowerandthedrumtower.It'smypleasuretoserveyou.
TheancientcastlewenowseeistheMingxi'ancitywall,whichwasbuiltonthefoundationoftheimperialcityoftanganintheearlyMingdynasty.ItisoneofthemostfamouscitiesinthelatemiddleagesofChina,anditisthelargestandmostcompletedefensefacilityofancientmilitarycastlesintheworld.
Xi'an,astheancientcapitalofthemillennium,hasbuiltthewallmanytimesinthepast.Mostofthemareburiedbythedustofhistory.Thewallsweseenowgobacktothesuidynasty.In一三六九,theMingdynastymovedxudafromshanxitoshaanxi,andchangedtheoriginalfengtianroadtoxi'an,meaning"westernlastingpeaceandstability".Itwasthepreludetotheconstructionofthewallinxi'an.Theeight-year-oldwallshapeisarectangle.Thewallis一五metershigh,一二to一四meterswide,一六to一八meterswideand一三.九kilometersincircumference.Thebottomlayerismixedwithlimeandglutinousricejuice.Afterdrying,itisexceptionallystrong.
Theancientcitywallofxi'anincludesaseriesofmilitaryinstallationsincludingmoat,suspensionbridge,gatebuilding,archerybuilding,zhenglou,tower,enemybuilding,parapetandcrenel.Well,nowlet'sfeelthescientific,rigorousandcompletemilitarydefensesysteminperson.
Theperipheryofthewallisthemoat,alsoknownasthemoat,whichisthefirstlineofdefenseofthewall.Itcanblockanenemy'sattack,oreventakeadvantageoftheterraintodestroytheenemy.Themoataroundthecitywallofxi'anis二零meterswide,andthegateiscrossedoverthemoat,andtheonlyaccesstothemoatandthegateisthedrawbridge.Atordinarytimes,thesoldiersinthecityofthecitylistenedtothecommanderofthemorningbell,loweredthedrawbridgeinthemorningandopenedthecitygates.Hoistthebridgeatnightandcutofftraffic.Onceawarhasoccurred,thedrawbridgerises,thegatesareclosed,andthegatesbecomefortifiedandenclosedfightingfortresses.
Thecitygateisthefocalpointofthecitydefensesystem,alsoistheweakspot.Atordinarytimes,itisapassagewaytoandfromthecity.Inwar,itisalsotheprimarygoalofdefendingthetwosides.Therefore,theMingdynastyattachedgreatimportancetoimprovingthecitygatedefensefacilities.Oneofthemostnotabletechnologicalbreakthroughsistheuseofthearchgatetopreventenemyfire.Mingxiancitygateisverysolid,doorleafwith一六cmthickboards,afangate二.八cubicmeterswithwood,doorleafhorizontalturnupanddowntheironbarreinforcement,theintervalofeachtwobars,一八零ironneedlemushroomsnails.Thereare一,八零零ironmushroomneedlesonthedoor.Thiscompelsthewoodofthedoor,increasingtherigidityofthedoor,sothatthearrowcan'tbeshotin.
Inordertoimprovetheinsurancecoefficientofthecitygatedefense,thegateisactuallymadeupofthreeparts,namely,gatebuilding,archwayandmainbuilding.Thegatetoweristhemostoutside,itsfunctionistheliftsuspensionbridge.It'susedtomakemore.Theenemyenteredthegateofthegate,asifenteringtheurn,andwouldbeattackedfromallsides,sothisspacedownstairsisalsocalled"wengcheng".Thearcheryisinthemiddle,withWindowsonbothsides,forarchery.Thewallbetweenthearcheryandthearcheryisalsocalled"wengcity",whichcanbetunneled.Thebuildingisthemainbuildingofthecitygate,whichisthemainbuildingofthecity.Ontheoutsideofthewall,thereisanenemystandoutsidethemainbody,commonlyknownasthe"horseface",every一二零meters.Thereare九八horsesonthewholewall,thebuildingonthehorse'sfaceiscalledtheenemybuilding,andthetwotowersare一二零metersapart,andtheothersideis六零meters,whichis"astone'sthrowaway".Thislayoutmakesiteasytoshoottheenemyfromtheside.Therefore,theancientscommented,"thereisacitywithoutaplatform,andwithoutacity,itisacity,sotheguardisthere,andsoisthecity."Ontheoutsideofthewallthereareshortpheasants,alsoknownas"battlements",withcrenelandsquareholesforarcheryandlookout.Theinsidewall,calledtheparapet,isdesignedtopreventsoldiersfromfallingintothewallwhiletheywalk.Atthefourcornersofxi'ancity,thereisatowercalledthe"turret".Inthecityofweng,whichisformedinthearcheryandthebuilding,thereisahorseroadleadingtothehead,whichisconvenientforthehorseandthehorse.Duringthewar,thisisthekeypointforthemobilizationoftroops,andmustbekeptclear.Sotheguardsareextremelystrict.
Astheyearschange,nowwecanseechangleofxi'ancitywallgate,AnDingMen,rosefinchdoor,includingdoor,jadeauspiciousdoorlight,etc.,theoriginofthesenamesfromonesidealsoreflectstheancientcityofupsanddownsfailure.ThecitywallofMingxianshowsthewisdomandwisdomoftheancientworkingpeopleinChina.Well,thecitywallofxi'anishere,andwewillcontinuetotakeyoutothebelltower.
BelltoweranddrumtoweraretheuniquebuildingsofancientChinesecities.BellsanddrumsweretheearliestpercussioninstrumentsinChina,withahistoryofmorethan三,零零零years.Originallyasaritualinstrumentandmusicalinstrument.Sincethespringandautumnperiod,ithasbeenusedformilitarycommand.TheancientChinesecitieshadthenatureofmilitarycastles.Besidesthecitywalls,excavatingthemoatandsettingupthesuspensionbridge,theyalsobuiltthebelltowerinthecenterofthecityasthecommandcenter.Atordinarytimes,withthemorningclock,thetimeofthereport,thetimetoopenandclosethesuspensionbridge,theemergencyconditionisusedtoalertthepolice,commandthecitydefense.ThisrigorousurbandefensesystemreacheditspeakintheMingdynasty.Xi'anisamilitaryandpoliticaltowninthenorthwestoftheMingdynasty.Itsbelltoweranddrumtowerarethemostsimilarbuildingsinthecountry,regardlessofitssize,historicalvalueorartisticvalue.
更多好内容，请关注：破作文 - pozuowen.com