China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111495 深趙都團練觀察使 深赵都团练观察使 Shenzhao Dutuanlianguanchashi 防镇 防鎮 fang zhen defense command 782 4 783 4 POINT point N 37.75293 E 114.77218 唐 Tang CHGIS