China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111510 東畿汝州節度使 东畿汝州节度使 Dongjiruzhou Jiedushi 防镇 防鎮 fang zhen defense command 783 4 784 4 POINT point N 34.66528 E 112.38263 唐 Tang CHGIS