The China Historical Geographic Information System (CHGIS) project is a database of historical administrative units for different periods in Chinese history from 221 BCE to 1911 CE. Free for download from CHGIS.
This is study of changes in kinship and scholarly association in Wuzhou, a prefecture in the middle of Zhejiang province. The geographic extent of literati kinship connections became increasingly local from the twelfth century on, but paradoxically the kinship connections across the prefecture declined as well. However, at the same time cross-prefecture scholarly connections among literati increased, becoming the new foundation for literati group solidarity.