Zhang Zhongjing. According to the information that all diseases originated from cold and dampness, Zhang Zhongjing said that all diseases originated from cold and dampness. Treatise on Febrile Diseases is a classic treatise by Zhang Zhongjing in the Eastern Han Dynasty. Cold is the source of all diseases, so whether it is health preservation or treatment, we must first dispel cold. Dampness is an obstacle to the rise of yang, while deficiency is a manifestation of the decline of body function, and blood stasis is one of the important reasons leading to the obstruction of meridians and the poor operation of qi and blood, which leads to the decline of body tissue and organ function.