This guide provides an overview of open databases and free resources with primary materials for China studies research. The guide was edited by Joshua Seufert (Princeton University Libraries) and Luo Zhou (Duke University Libraries) for the Luce/ACLS Digital Archives Mapping Project. This guide will be updated periodically, with an expanded directory to be released in winter 2025. If you would like to contribute to the Mapping Project, we invite you to suggest a resource here.