或问针穴分寸。当根据。何法。余答云。相传用同身寸。同身寸者。谓即以其身之寸。同其人之身也。铜人经谓之周
身寸。其法如屈指量。则以中指中节。倒边两纹之尖。相去为一寸。如伸指量。则以中指上节下之横纹。量至中节下之
中纹。为一寸。此古法也。至于一人之身。在头或独大独尖。面或独长独阔。腰或独细独粗。四肢或不相等。上下三停
或不相齐。即可用中指节之寸。周身自有活法。以较量之。故又名为周身寸也。有如师欲刺头上穴。根据明堂诀式。头围
该二尺六寸。顶去额长四寸。额下去颐。（颔中为颐。）长一尺。顶去项发际。长七寸五分。项发下至大椎。长三寸五分。
顶去脑角四寸。耳后当完骨。（完骨者。耳后发际高骨也。）广九寸。耳前当耳门。广二寸。两颧之间。广九寸五分。（两
颧相去实止七寸。曰九寸五分者。连两颧骨高处。皆量在内）以上分寸。与中指寸相计少有不合。可用活法较量于其间
即得真正尺寸。且师更以手摩摸其骨空之处即得真正穴道。所谓头必因于头。腹必因于腹背必因于背。手足必因于手足。
总其长短大小而折衷之。则庶乎其合法矣。
以上伤寒书共一十四卷。此先摘仲景所云热病附以后贤方论。而推展发明者也。其仲景所云。真寒阴证。复作中寒
论。上中下三卷杂以后贤方论。合为十七卷务使伤寒中寒判然有别。斯医人自无误治之证云耳。
有人问针刺穴位如何确定分寸。应当依据什么方法呢？我回答说：相传使用“同身寸”。“同身寸”的意思是，就是用自己的身体尺寸，来对应这个人的身体尺寸。铜人经（针灸模型）中称之为“周身寸”。其方法如弯曲手指测量，则以中指中间一节背面两侧纹头的尖端之间的距离，作为一寸；如伸直手指测量，则以中指上节下方的横纹，量至中节下方的中间横纹，作为一寸。这是古法。至于每个人的身体，头部有的特别大或特别尖，面部有的特别长或特别宽，腰部有的特别细或特别粗，四肢有的不相等，上下三部分（头、躯干、下肢）有的不齐整。这时就可以用中指节的寸数，周身自然有灵活的方法，用来衡量比较。所以又叫做“周身寸”。
假如老师想要刺头部的穴位，根据《明堂诀式》（针灸穴位定位典籍），头围应该是二尺六寸，头顶到前额长四寸，前额下到下巴（颏部称为颐），长一尺，头顶到后颈发际长七寸五分，后颈发际下到大椎穴，长三寸五分，头顶到脑角（耳后高骨处）四寸，耳后正当完骨穴（完骨穴是耳后发际的高骨处），宽度九寸，耳前正当耳门穴，宽度二寸，两颧之间，宽度九寸五分（两颧实际距离只有七寸，说九寸五分是因为连两颧骨高处都计算在内）。以上这些分寸，与中指寸计算起来，多少会有些不合之处，可以用灵活的方法在中间衡量，就能得到真正的尺寸。而且老师更用手抚摸触摸骨骼的空隙之处，就能得到真正的穴位位置。所谓头部必须依据头部的比例，腹部必须依据腹部的比例，背部必须依据背部的比例，手足必须依据手足的比例，综合长短大小而折衷考量，这样就差不多合乎法度了。
以上伤寒类书籍共十四卷。这里先摘录张仲景所说的热病内容，附以后代医家的方论，并加以推展发明。其中张仲景所说的真寒阴证，另外作《中寒论》，上、中、下三卷杂以后贤方论，合为十七卷，务必使伤寒和中寒明确区分，这样医生自然就不会有误治的病症了。
A question was asked: "How are the measurements for acupuncture points determined? What method should be followed?" I replied, "It is traditionally said to use 'Cun' based on one's own body (Tongshen Cun). 'Tongshen Cun' means using one's own body measurements to correspond to that person's body. The Bronze Man Classic (Jinren Jing) refers to it as 'Zhou Shen Cun'. The method involves measuring with a bent finger: the distance between the tips of the two transverse creases on the dorsal side of the middle phalanx of the middle finger constitutes one Cun. If measuring with an extended finger, the distance from the distal transverse crease of the proximal phalanx of the middle finger to the middle transverse crease of the middle phalanx constitutes one Cun. This is the ancient method.
However, regarding each individual's body, the head may be unusually large or pointed, the face may be unusually long or wide, the waist may be unusually thin or thick, the limbs may be unequal, and the upper, middle, and lower thirds of the body may not align perfectly. In such cases, one can use the measurement of the middle finger segment, employing flexible methods inherent to the whole body for comparison. Hence, it is also called 'Zhou Shen Cun'.
For instance, if a practitioner intends to needle an acupoint on the head, according to the *Mingtang Jueshi* (Classic Formulas for Acupuncture Points), the circumference of the head should be 2 chi 6 cun; the distance from the vertex to the forehead is 4 cun; from the forehead to the chin (referred to as Yi) is 1 chi; from the vertex to the posterior hairline of the neck is 7.5 cun; from the posterior hairline to the Dazhui point (GV14) is 3.5 cun; from the vertex to the occipital horn is 4 cun; at the ear, corresponding to the Wanggu point (GB12, located at the high bone behind the ear), the width is 9 cun; in front of the ear, corresponding to the Ermen point (TE21), the width is 2 cun; between the two zygomatic arches, the width is 9.5 cun (the actual distance between the zygomatic bones is only 7 cun; the 9.5 cun figure includes the highest points of both zygomatic bones). These measurements may slightly differ when calculated against the middle finger Cun. Therefore, flexible comparative methods should be applied to obtain the true dimensions. Furthermore, the practitioner can palpate the bony depressions with their hand to locate the precise acupoints. This implies that the head must be measured according to the head, the abdomen according to the abdomen, the back according to the back, and the hands and feet according to the hands and feet. By synthesizing length and size to find a balance, one will essentially adhere to the correct standards.
The aforementioned Shanghan texts total fourteen volumes. Here, we first excerpt Zhang Zhongjing’s discussions on febrile diseases, appending later physicians’ formula theories and expanding upon them. Regarding Zhang Zhongjing’s descriptions of true cold and Yin syndromes, these are separately treated in the *Zhonghan Lun* (Treatise on Cold Damage). The upper, middle, and lower three volumes are supplemented with later physicians’ formula theories, totaling seventeen volumes. The aim is to clearly distinguish between Shanghan (Cold Damage) and Zhonghan (Mid-cold), so that physicians will naturally avoid misdiagnosis and mistreatment."