China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111586 徐州團練防禦使 徐州团练防御使 Xuzhoutuanlian Fangyushi 防镇 防鎮 fang zhen defense command 862 4 862 4 POINT point N 34.26963 E 117.18768 唐 Tang CHGIS