Case studies fascinate because they link individual instances to general patterns and knowledge to action without denying the priority of individual situations over the generalizations derived from them. In this volume, an international group of senior scholars comes together to consider the use of cases to produce empirical knowledge in premodern China. They trace the process by which the project of thinking with cases acquired a systematic and public character in the ninth century CE and after. Premodern Chinese experts on medicine and law circulated printed case collections to demonstrate efficacy or claim validity for their judgements. They were joined by authors of religious and philosophical texts. The rhetorical strategies and forms of argument used by all of these writers were allied with historical narratives, exemplary biographies, and case examples composed as aids to imperial statecraft.