Lettervalleypassinfrontofyushanjinthreeprovincesborder,henanlingbaocityterritory,about75kmawayfromdowntownsanmenxia,12kmfromdowntownspi.Lettervalleywasfoundedinthespringandautumnperiodandthewarringstatesperiod,afterthedestroyedbyfire.In1987,rebuiltthebeginningletterofrehabilitationof1992cagevalleyfloor,isaTaoistcultureandmilitaryintheheartoftheintegrationofthehumanities.Lettervalleyisbuildinginthehistoryofourcountryoneoftheearliestinnorth-westfortress,alsoourcountryancientgreatthinker,philosopherLaoziTaoistschoolofthoughttakesgreatthedaodejingvalley,thespiritoftheholyland,tocelebrity(Laotzu),classics(thedaodejing),collectingthevalleyoff(letter)nicheinhistory,knownoverseas.FormerChineseTaoistassociation,yuxiroadflyoverMinZhiTingpersonallyinscribedforthescenicspot"thesourceoftheTaoist"plaques.Thescenicareacoversanareaof16.9squarekilometers,dividedintofunctionalvalleyandthebeginningoftwoparts.Lettervalleypasswasbuiltinthespringandautumnperiodandthewarringstatesperiod,"because,inthevalleydeepriskssuchasletterofthename.Sinceyaomountainmountaineast,westtoTongjin,TongMinglettervalley,so-calledcrash"(astheexample).
Sincethespringandautumnperiodandthewarringstatesperiod,aftersevenmalesupremacy,chu,huangchaouprising,thearticleanalyzesthepeasantuprising,aswellasthexinhairevolution,theAnti-JapaneseWar,liberationwarshowsthatmust,isstrategicallyimportantforeverybody.ThebeginningpalaceisChina'sspringandautumndynastyoutstandingthinker,politician,philosopherandwriterLaotzewritingsthedaodejing,hisbookthedaodejing,itsideasandprofound,containstherich,allaspectsrelatedtoheaven,earth,people,inpolitics,economy,militaryaffairs,art,ethics,healthandotherfieldshastheoriginalopinion,isararetreasureintheworld.Since1992,theletterofvalleyLaozisbirthdayactivitieseveryyear,whenthetouristsathomeandabroadtopilgrimage.Mainattractiononfloor,letterofftrail,thebeginningpalacecourtyard,avenue,Taoismregimen,thescripture-storedtower,deeppurplefloor,chickencalls,theforestofsteles,museum,themuseumofmorethan20.