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Instruct the patient to sit upright on a square stool, with both feet flat on the ground, knees and thighs at the same level, legs together, and toes aligned forward. Remove all upper body clothing (if it cannot be fully removed, bind the sleeves around the arms so that the scapulae can separate, allowing for accurate point location; if the patient has weak Qi and fears cold, they may put clothes back on, passing their arms through the sleeves, keeping the collar below the neck in front of the chest, and crossing the lapels over the waist. Mark the points with ink. During moxibustion, wear a vest and tie a belt close to the affected area to prevent interference with the flame from the moxa cone.) Bend the spine and extend the arms. Place both hands on the knees, aligning the middle fingers with the center of the kneecaps. Press the thumbs tightly together, with the fingertips aligned with the anterior edge of the patella. Apply slight upward force. Do not allow the wrists to bend obliquely or shake. (Duan Yancong, Physician Zhongmou, stated: Shi Cangyong believed that pressing the right knee with the left hand and the left knee with the right hand would cause the scapulae to open. I tried this method and found that when the hands cross, the wrists become uneven, and the scapulae tilt laterally. It is better to follow the old method of pressing the left knee with the left hand.)

Have the patient sit upright, bend the spine, and extend the arms. Use fingers to palpate the vertebral column behind the neck, from the first vertebra to the fifth vertebra (there is also Dazhu BL11, located in the depression above the first vertebra, which is not bone. The bony part is indeed the first vertebra; the character "Zhui" [vertebra] was written as "Chui" in ancient texts of *Qianjin Fang*. Wang Yiwei corrected *Mingtang Jing*, changing the radical to wood, which is considered correct.) Mark each vertebra sequentially with ink, ensuring the upper and lower ends are straight and distinct (After marking with ink, dry it immediately with clam powder to prevent smudging.) Between the fourth and fifth vertebrae, use wax paper or a bamboo strip to measure the distance between the two vertebrae, divide it into three equal parts, and mark the interspace on the spine with ink. Take slightly more than two-thirds down from the fourth vertebra and slightly less than one-third up from the fifth vertebra. Circle this area with thick ink; this is the moxibustion point. Within this six-cun span, establish the standard for the vertical and horizontal positioning of the two points (*Qianjin Fang* states the point is near the fifth vertebra, determined by visual estimation, hence referred to as the upper one-third of the vertebra.) Measure the distance between the two vertebrae again, which corresponds approximately to 1.37 cun of the "same-body inch." Although individuals vary significantly in height, reference the method in *Jia Yi Jing*: from Dazhu BL11 to the sacrococcygeal joint, there are 21 vertebrae totaling three chi in length. If the vertebral boundaries are clear, regardless of slight length variations, locate points based on vertebral count. To verify using the three-chi method from Dazhu to the coccyx, have the person stand upright. Use a straight rod, measuring from the ground to the center of the umbilicus, then cut the rod. Place the rod against the back along the midline of the spinal column. The end of the rod corresponds to the lower border of the fourteenth vertebra and the upper border of the fifteenth vertebra, where the Mingmen GV4 point is located. From Mingmen GV4, measure upward 1 chi 3 cun 5 fen using the same-body inch. This location is 9.7 fen below the fourth vertebra and 4 fen above the fifth vertebra. Three cun lateral to this midpoint on both sides is the Gaohuang BL43 acupoint. Measuring downward from the first vertebra, this corresponds to approximately 5.1 cun of the same-body inch. However, since human proportions vary, the vertebral column should generally serve as the primary reference. Wang Bing, in his commentary on *Su Wen*, stated: "The segmented bones of the spine are called Zhui [vertebrae], and the convex curve of the back is called Shu [acupoints/regions]."