"Diagram of sexagesimal cycle of circulatory phases." This circle diagram shows the combination sequence of the 10 Heavenly Stems and 12 Earthly Branches to form the sexagesimal cycle of 60 years. Liu Wenshu, Suwen rushi yunqi lun'ao, preface 1099.

Current Projects

The Geographic Imagination in Chinese Medicine. A cultural history of the Chinese geographic imagination through a biography of the disease-concept wenbing (Warm diseases), a history of Chinese ethno-epidemiology, and conceptions of regional differences in climates, constitutions, and contagions in Chinese medicine.

Understanding is Within One's Grasp: A Cultural History of Chinese Hand Mnemonics, Calculation, and Divination