China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111469 澤潞沁節度使 泽潞沁节度使 Zeluqin Jiedushi 防镇 防鎮 fang zhen defense command 756 4 776 4 POINT point N 36.18354 E 113.10349 唐 Tang CHGIS