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This book uses the method of philology to comprehensively grasp the history of materia medica before "Zhenglei Materia Medica", the masterpiece of Materia Medica in the Song Dynasty. A multi-level comparative study of it with Song Dynasty prescriptions, exegesis, Taoism, history, and literature-related works reveals the materia medica value and document compilation value of "Zhenglei Materia Medica" as well as the characteristics and hidden dangers of Song Dynasty materia medica, which will help deepen the study of the history of medicine and culture in the Song Dynasty.