杨倓

Yang Tan, whose life details are unknown, has only limited publicly available information; his name appears in ancient Chinese medical literature. Two works are held in the collection, both titled Yang's Family-Transmitted Prescriptions (Yangshi jiacang fang), classified under medicine. As the title suggests, the book is a compilation of medical formulas preserved by the Yang family over generations, and its content presumably focuses on clinical prescriptions and therapeutic experience, reflecting the practical and easily consulted nature of family formulary literature. Such formularies played a role in traditional medical transmission by preserving folk-tested remedies and supplementing official materia medica and prescription texts, offering reference value for later clinical practice and formula organization. Owing to the scarcity of historical records, Yang Tan's courtesy name, native place, dates of birth and death, and medical career cannot be verified, and no speculation is made here; readers may consult the original text to learn more about his medical views and prescription characteristics.