Iziko Lentengiso ILongfor Origin liziko lentengiso elikwiShenyang, eTshayina. Ingaphakathi ligubungela iimitha ezisikwere ezili-1400 kwaye lilungiswe njengendawo yeklabhu eyenzelwe ngokukhethekileyo edibanisa ubugcisa, itekhnoloji, izifundo zoluntu, impilo, ishishini nolonwabo, apho umsebenzi wentengiso ugcinwe ufihlakele. Uyilo lwe-astrolabe kunye neshandeliya ejikelezayo zenza iipatheni zokukhanya emini kunye namachaphaza okukhanya kweenkwenkwezi ebusuku. Izinyuko ezijikelezayo ezinomphandle wentsimbi zidibanisa imigangatho emibini. Amanqwanqwa, imigca ethe ngqo kunye neefestile ezisuka phantsi ukuya eluphahleni zahlula iindawo kwaye zongeza ubunzulu.