Follow the pulse [1] Ling Shu Jing Bie: the foot is full of yin, reaching the stomach, not following the yang, going up to the kidney, and it belongs to the pulse at the time of fourteen vertebrae. [2] "Difficult Classics and Twenty-eight Difficult Classics": Those who have a pulse start from the seasonal crisis and turn around for a week. Note (without) the translation of the Shaoyin meridian of the foot goes up to the middle, the other one goes up to the confluence of the Taiyang meridian of the foot, and then goes up to the kidney. Fourteen vertebrae (Shenshu points on both sides) belong to veins when they are separated. The vein originates from the hypochondriac part of the season, and meets the acupoints such as the pulse, five axes and Wei Dao of the gallbladder meridian of foot shaoyang, surrounding the waist and abdomen. Those who follow the pulse in the eight strange meridians take Zhangmen point of Jueyin in the current season as the starting point and Shaoyang point of the same foot as the pulse-following point, and surround themselves like a belt. The word "belt" with pulse means belt. Because it crosses the waist and abdomen and binds the meridians that run through the whole body together, it looks like a belt, so it is called a belt. Generally speaking, the main function of pulse is to "inhibit meridians". It emanates from the second lumbar vertebra and surrounds the waist. Therefore, the yin and yang meridians of the foot are bound by the veins. Because the vein originates from the Du meridian and runs in the waist and abdomen, and the waist and abdomen is the origin of the pulse qi of Chong Ren Du (Chong Ren Du originates from cells), the vein is closely related to Chong Ren Du. The disease syndrome "Su Wen's Twenty-nine Difficulties" says: "If you take it as a disease, your abdomen is full of waist and you will be dissolved in water." If the pulse condition is not harmonious, it can be seen that women have irregular menstruation and red and white secretions. Su Wen Wei Lun: "Yangming deficiency leads to longitudinal tendons and veins, so there is no need to be flaccid." This shows that if the pulse is out of balance, flaccidity will occur. In Wang Shuhe's "Pulse Sutra", there are also descriptions of symptoms such as "feeling the pulse, circling the belly of the navel from left to right, and waist pain rushing to the female thigh". According to the eight meridians and eight points in acupuncture and moxibustion, the veins are nearly vertical (feet), and the main symptoms are stroke, numbness and contracture of limbs, fever, headache, swelling and pain of neck and cheeks, red eyes, toothache, pharynx swelling, head rotation, deafness, itching of skin wind, uncomfortable traction of tendons and veins, leg pain, hypochondriac pain and so on.