Eighty-One Difficult Sutras (Free Public Edition Book)

Originally known as "The Eighty-One Difficulties of the Yellow Emperor", it is a theoretical work of traditional Chinese medicine. "Difficulties" means "asking difficult questions", or "difficult solutions". "Jing" refers to the "Nei Jing", that is, the "Nei Jing" for questioning. This book is compiled in the form of questions and answers to explain difficult problems. A total of 81 problems are discussed, so it is also called "Eighty-One Difficulties". The book mainly focuses on basic theories and also analyzes some diseases and syndromes. Difficulties 1 to 22 are for pulse studies, 23 to 29 are for meridians, 30 to 47 are for viscera, 48 to 61 are for diseases, 62 to 68 are for acupuncture points, and 69 to 81 are for acupuncture.