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Again, use the paper strip previously measured for *tongshen cun* (body-inch measurement). From the center of the upper border of the fifth thoracic vertebra (*D5*) on the midline of the spine, where the ink circle is located, measure vertically downward along the end of the spinal column four *cun*.
Arrive at the seventh thoracic vertebra (*D7*), and mark with ink. From this ink mark, measure obliquely upward to both sides to the center of the moxibustion acupoint circle, ensuring each side is exactly five *cun*, serving as the standard for the level and straightness of the two acupoints.

Instruct the patient to sit upright with a straight posture. Use their own right hand to rest on the right shoulder, anchoring the neck, extending the fingers flatly onto the back, and mark with ink the spot reached by the tip of the middle finger.
Perform the same recording with the left hand. Then, palpate from the superior angle of the scapula to the inferior end of the scapula; between these points, there should be four ribs and three intercostal spaces (these four ribs extend horizontally from the scapula to the upper part of the spinal column. When massaging with force, if it feels like the finger sinks in rather than hitting bone, it is tendon/muscle, not bone. The *Qianjin Fang* states "empty space among tendons," suspecting that the character "rib" (*lei*) in "four ribs" is an error. Wang Yiyi, in the *Tongren Shuxue Zhenjiu Tujing* (Illustrated Manual of Acupuncture Points of the Bronze Man), further changed "among tendons" to "intercostal." The method of resting the right hand on the right shoulder is the same. The *Qianjin Yifang* changes it to resting on the left shoulder. If the right hand rests on the left shoulder, the finger would reach below the fifth thoracic vertebra, far from the acupoint, which is incorrect. One should follow the *Qianjin Fang* as correct). The moxibustion acupoint should be in the middle of the three intercostal spaces, based on the lower edge of the scapula, allowing space for one finger placed sideways, touching the surface of the muscle. Press on the acupoint in the empty space among the tendons; the patient should feel a pulling sensation radiating to the chest and shoulder (*Qianjin Yifang* mentions pulling to the shoulder. Shi Cangyong also used a comb or the head of a hairpin to press the acupoint firmly so the patient can perceive it easily). Compare this with the previously circled moxibustion acupoint, which should be below the previously marked spot reached by the patient's finger, or to the side where the finger cannot reach, to verify the correctness of the acupoint. However, fingers vary in length, and skin varies in thickness. If they coincide, it is good; if not, do not discard other methods solely based on this single criterion. Some individuals have scapulae far from the spinal column, exceeding three *cun*, making the method of locating acupoints three *cun* lateral to the spine difficult. In such cases, simply find the middle of the four ribs and three intercostal spaces, based on the lower edge of the scapula allowing space for one finger placed sideways, as the acupoint.