Werealizedthatthedoorhasadifferentsignificance.Ofcourse,doorsweremadeforpeopletoenter,however,awindowcanalsosometimesasimportandexportuse,suchasthievesorinnovelsaboutValentinewouldliketoclimbthewindow.Therefore,thewindowsanddoorstofundamentaldifference,notonlyisthereanyoneout.Ifitcomestotheadmirationofspring,wemightsay:adoor,wecangoout;haveawindow,weneednotgoout.Windowsconnectthenatureandhumandiaphragm,windandsun,maketheroomapartofspring,letusenjoyit,noneedtogooutsideandlookfor.