抄録
The practical teachings established by Tiantai Zhiyi 天台智顗 (538- 597)include a detailed explanation of how to overcome diseases that arise during practice. This paper examines the method of treating illnesses through breathing, particularly from the Chanmen Koujue 禅門口訣, a com pilation of Zhiyi’s teachings. Four key points are discussed as features of this approach. Firstly, In the practice of counting breaths, it is taught to focus on counting the outgoing breath. Secondly, when illness arises due to unregulated breath ing, the method of bianxi 遍息, which involves circulating energy (qi 気) within the body, is recommended. Thirdly, one of the six types of qi used in modern qigong is explained. Finaly, the universality of breathbased treatments is discussed. There are two main reasons why Zhiyi advocated for such specific breathbased treatments. Chinese medicine and Taoist practices significant emphasis on the role of breathing. Second, with the spread of seated medi tation in China, there was an increase in individuals afflicted by Chan sick ness 禅病.
https://ror.org/05tjaf288 
