China Historical Geographic Information System
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. The project creates a dataset which tracks changes in place names, administrative status, and geography. It is a joint project of Harvard University and Fudan University.
Source: Wikipedia — China Historical Geographic Information System (CC BY-SA 4.0)