The China Historical Geographic Information System (CHGIS) is a Historical GIS project for creating a database of populated places and historical administrative units for the period of Chinese history between 222 BCE and 1911 CE. A historical geographic information system (also written as historical GIS or HGIS) is a Geographic information system that may display store and analyze Chinese civilization originated in various city-states along the Yellow River ( valley in the Neolithic era The project creates a dataset which track changes in placenames, administrative status, and geography.