This system which is a product of cooperation by the Institute of History and Philology and the Computing Centre, Academia Sinica, works as a search tool for historical sites in Edsen-gol where the Institute's Han Dynasty wooden slips were excavated. Users can compare the spatial and temporal information on the historical maps of Liang Chou Cishibu of the two Han Dynasties with the maps of modern China by overlapping maps. This website also uses maps and menus as links to the other database of Han wooden slip digital archive (http://140.109.18.243/woodslip_public/System/Main.htm) for further information of excavation sites and excavated Han wooden slips.