China Historical GIS, Harvard University and Fudan University CC BY-NC 4.0 https://maps.cga.harvard.edu/tgaz/placename/hvd_111518 黔州經略觀察使 黔州经略观察使 Qianzhou Jinglueguanchashi 防镇 防鎮 fang zhen defense command 785 4 786 4 POINT point N 28.45819 E 110.39696 唐 Tang CHGIS