The basis of pulse diagnosis?

# Healthy Chinese New Year # Pulse-taking is a way for doctors to feel the pulse changes by touching the patient's pulse with their fingers. As one of the "four diagnoses" of traditional Chinese medicine, the origin of pulse diagnosis is very old. According to records, pulse diagnosis was discussed in the legendary harvest season of ancient doctors and ghost villages. Bian Que was a doctor in the Spring and Autumn Period and the Warring States Period. He was famous for his methods of observing, smelling, asking and feeling, especially his pulse diagnosis. At that time, Neijing recorded the pulse method of "three points and nine waiting periods", but in the later difficult classics, it began to "take an inch alone" and wait for the pulse to say the disease. In the Han dynasty, pulse diagnosis was more common. For example, in Treatise on Febrile Diseases written by Zhang Zhongjing, the principle of "flat pulse differentiation" is established, which shows that pulse diagnosis has been widely used in clinic and has been further developed and improved. Wang Shuhe, a doctor in the Jin Dynasty, wrote Pulse Classic, which collected the great achievements of pulse science before the Han Dynasty, described three pulse methods, namely, nine phases and inching, and determined the common floating, thick, slippery, counting, accelerating, chording, tight, heavy, squatting, skin, solid, slight, astringent, fine, soft, weak and fine. After that, the monographs of pulse science are expounded, such as Jing Yue Quan Shu. In the Ming Dynasty, the pulse spirit, sixteen parts of positive pulse, constant change, shun and reverse were discussed in detail. Li Shizhen extracted the essence of pulse science before Ming Dynasty, and wrote the book Pulse Science in Hu Ling. On the basis of 24 kinds of pulse conditions in Pulse Meridian, three kinds of pulse conditions, long, short and soft, were added, which increased the number of pulse conditions in traditional Chinese medicine to 27. Li added 28 kinds of pulse conditions to Diagnose the Family. In addition, Li Yangou's Pulse Differentiation Tactics in Qing Dynasty and Huang Gongxiu's Pulse Theory Seeking Truth are quite practical for theoretical analysis and clinical experience of pulse science, and also reflect the development of ancient pulse science to varying degrees.