The book "Classic of Diseases and Fevers" (傷寒論) is considered to be the work of the famous Chinese doctor and pharmacist Zhang Zhongjing, whose life and activity are from 168 to 196 AD. This medical treatise, written more than two thousand years ago, is one of the most important texts of traditional Chinese medicine. In "Classics of Diseases and Fevers", the author examines the principles of diagnosis and treatment of various diseases, including fevers, playing an important role in the development and dissemination of classical methods of traditional Chinese medicine. This book contains valuable experience in the treatment of various ailments, which has been passed down from generation to generation, and is still relevant for modern practitioners. "Classic of Diseases and Fevers" is a valuable source of knowledge about Chinese medical science and its approaches to the treatment of diseases, and also invites the reader into the world of ancient traditions and wisdom, which have been added by centuries of observation and practice.