China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111669 忠武軍節度使 忠武军节度使 Zhongwujun Jiedushi 防镇 防鎮 fang zhen defense command 794 4 907 4 POINT point N 34.03139 E 113.81975 唐 Tang 后梁 Houliang CHGIS