Ch'eh-ching T'ai, An Observatory of the Yuan Dynasty, Kao-ch'eng Chen, Teng-feng, HonanMeasured smooth vector linework with editable bilingual captions. After Liang Sicheng.drawing01drawing02drawing03drawing04details河南登封縣告成鎮河南登封縣告成鎮測景台測景台元郭守敬建元郭守敬建公尺5公尺50010M.10M.平面縮尺平面縮尺SCALE FOR PLANSCALE FOR PLANCH'EH-CHING T'AI,CH'EH-CHING T'AI,TENG-FENG,TENG-FENG,KAO-CH'ENG CHEN,KAO-CH'ENG CHEN,HONANHONANAN OBSERVATORY OF THE YUAN DYNASTYAN OBSERVATORY OF THE YUAN DYNASTYCIRCA 1300 A.D.CIRCA 1300 A.D.劉敦楨測繪劉敦楨測繪MEASURED BY LIU T.T.MEASURED BY LIU T.T.北北梁思成