间也。手太阳之别。名曰支正。上腕五寸。内注少阴。其别者。上走肘。络肩 。实则节弛肘废。虚则生 。小者如指
痂疥。取之所别也。手阳明之别。名曰偏历。去腕三寸。别入太阴。其别者。上循臂。乘肩 。上曲颊。遍齿。其别者。
入耳。合于宗脉。实则龋聋。虚则齿寒。痹隔。取之所别也。手少阳之别。名曰外关。去腕二寸。外绕臂。注胸中。合
心主。实则肘挛。虚则不收。取之所别也。足太阳之别。名曰飞阳。去踝七寸。别走少阴。实则鼽窒。头背痛。虚则鼽
衄。取之所别也。足少阳之别。名曰光明。去踝五寸。别走厥阴。下络足跗。实则厥。虚则痿 。坐不能起。取之所别
也。足阳明之别。名曰丰隆。去踝八寸。别走太阴。其别者。循胫骨外廉。上络头项。合诸经之气。下络喉嗌。其病气
逆。则喉痹瘁喑。实则狂颠。虚则足不收。胫枯。取之所别也。足太阴之别。名曰公孙。去本节之后一寸。别走阳明。
其别者。入络肠胃。厥气上逆。则霍乱。实则肠中切痛。虚则鼓胀。取之所别也。足少阴之别。名曰大钟。当踝后。绕
跟。别走太阳。其别者。并经上走于心包下。外贯腰脊。其病气逆。则烦闷。实则闭癃。虚则腰痛。取之所别也。足厥
阴之别。名曰蠡沟。去内踝五寸。别走少阳。其别者。经胫。上睾。结于茎。其病气逆。则睾肿卒疝。实则挺长。虚则
暴痒。取之所别也。任脉之别。名曰尾翳。下鸠尾。散于腹。实则腹皮痛。虚则痒搔。取之所别也。督脉之别。名曰长
强。挟膂。上项。散头上。下当肩胛左右。别走太阳。入贯膂。实则脊强。虚则头重高摇之。挟脊之有过者。取之所别
也。脾之大络。名曰大包。出渊腋下三寸。布胸胁。实则身尽痛。虚则百节尽皆纵。此脉若罗络之血者皆取之。脾之大
络脉也。凡此十五络者。实则必见。虚则必下视之。不见求之上下。人经不同络脉异所别也。（如此钜制以十字结之何等
神勇）
此篇如时艺两截题做法前叙十二经。后叙十五络。中间由经卸络。恰似中渡。洋洋洒洒浩气直行。其叙经脉。曲折
处笔力。轻捷醒豁。毫发毕见。试问。视禹贡事绪。孰繁孰详。笔力孰醒孰快。虚实二字。一线到底是谋篇之密也。而
排比铺张之中。自有曲折隽永之致。读之但觉灵光满纸。实处皆虚。板处皆活。运笔之妙千古无两。
络脉之间。手太阳经的别络，名称叫支正。在腕后五寸处，向内注入少阴经。它的分支，向上走到肘部，联络肩部。实证表现为关节松弛、肘部功能丧失；虚证则生疮疡，小的像手指上的痂疥。治疗时取该别络的穴位。手阳明经的别络，名称叫偏历。距离腕部三寸处，别行注入太阴经。它的分支，沿着手臂上行，经过肩部，上至曲颊（下颌角附近），遍布牙齿。它的另一分支，进入耳中，与宗脉相合。实证表现为龋齿、耳聋；虚证表现为牙齿寒冷、痹阻不通。治疗时取该别络的穴位。手少阳经的别络，名称叫外关。距离腕部二寸处，向外绕行手臂，注入胸中，与心主（心包）相合。实证表现为肘部拘挛；虚证表现为肘部不能收持。治疗时取该别络的穴位。足太阳经的别络，名称叫飞阳。距离踝部七寸处，别行走向少阴经。实证表现为鼻塞流涕、头部和背部疼痛；虚证表现为鼻出血。治疗时取该别络的穴位。足少阳经的别络，名称叫光明。距离踝部五寸处，别行走向厥阴经，向下联络足背。实证表现为四肢厥冷；虚证表现为痿软无力，坐起困难。治疗时取该别络的穴位。足阳明经的别络，名称叫丰隆。距离踝部八寸处，别行走向太阴经。它的分支，沿着胫骨外侧缘上行，联络头项部，汇聚各经之气；向下联络咽喉。如果气逆，则导致喉痹失音。实证表现为狂乱癫疾；虚证表现为足部不能收持、小腿枯瘦。治疗时取该别络的穴位。足太阴经的别络，名称叫公孙。距离本节（第一跖趾关节）后方一寸处，别行走向阳明经。它的分支，进入并联络肠胃。如果厥气上逆，则导致霍乱。实证表现为肠中剧烈疼痛；虚证表现为腹部鼓胀。治疗时取该别络的穴位。足少阴经的别络，名称叫大钟。位于踝后，环绕脚跟，别行走向太阳经。它的分支，沿经脉上行至心包下方，外部贯穿腰脊。如果气逆，则导致烦闷。实证表现为小便闭塞；虚证表现为腰痛。治疗时取该别络的穴位。足厥阴经的别络，名称叫蠡沟。距离内踝五寸处，别行走向少阳经。它的分支，沿胫骨上行至睾丸，结聚于阴茎。如果气逆，则导致睾丸肿胀、卒发性疝气。实证表现为阴茎挺长；虚证表现为突然瘙痒。治疗时取该别络的穴位。任脉的别络，名称叫尾翳（即鸠尾穴）。向下从鸠尾穴分出，散布于腹部。实证表现为腹皮疼痛；虚证表现为皮肤瘙痒。治疗时取该别络的穴位。督脉的别络，名称叫长强。挟脊柱两旁，上行至颈部，散布于头部，向下到达肩胛骨左右两侧，别行走向太阳经，深入贯通脊柱肌肉。实证表现为脊柱强直；虚证表现为头重难以支撑而摇晃。对于挟脊部位有病变的，取该别络的穴位。脾的大络，名称叫大包。出于渊腋下三寸处，布散于胸胁部。实证表现为全身疼痛；虚证表现为所有关节松弛无力。这种脉络如同网罗般的血络，都应予以治疗，这是脾的大络脉。凡是这十五络脉，实证必然在体表显现，虚证则必须向下观察寻找。如果看不见，就要在上下部位寻求。人的经脉不同，络脉别出的部位也各异。（如此宏大的体制，以十字结构来总结，何等神勇有力）
这一篇如同科举文章的两截题做法，前面叙述十二经脉，后面叙述十五络脉。中间由经脉过渡到络脉，恰似中间的过渡段。气势洋洋洒洒，浩然正气直行。它叙述经脉时，在曲折之处笔力轻捷醒豁，毫发毕现。试问，比起《禹贡》的事绪，哪个更繁杂详细？笔力哪个更清醒快捷？“虚实”二字贯穿始终，是谋篇布局严密的关键。而在排比铺张之中，自有曲折隽永的情致。读起来只觉灵光满纸，实处皆虚，板滞处皆活泼。运笔之妙，千古无两。
Between the collaterals. The collateral of the Hand-Taiyang meridian is named Zhizheng (Branching Straight). It is located five cun above the wrist, and internally connects to the Shaoyin meridian. Its branch goes upward to the elbow and links with the shoulder. In excess conditions, there is flaccidity of the joints and loss of function in the elbow; in deficiency conditions, sores arise, small ones resembling scabies or crusts on the fingers. Treat by taking the point at its collateral origin. The collateral of the Hand-Yangming meridian is named Pianli (Oblique Crossing). It is three cun from the wrist, where it diverges into the Taiyin meridian. Its branch follows the arm upward, passes over the shoulder, ascends to the Qujia (angle of the jaw), and spreads over the teeth. Another branch enters the ear and merges with the Zongmai (Major Vessels). In excess conditions, there are toothache and deafness; in deficiency conditions, there is coldness in the teeth and bi-syndrome obstruction. Treat by taking the point at its collateral origin. The collateral of the Hand-Shaoyang meridian is named Waiguan (Outer Pass). It is two cun from the wrist, winding externally around the arm, injecting into the chest, and merging with the Xinbao (Pericardium). In excess conditions, there is spasm of the elbow; in deficiency conditions, there is inability to flex the elbow. Treat by taking the point at its collateral origin. The collateral of the Foot-Taiyang meridian is named Feiyang (Flying Yang). It is seven cun from the ankle, diverging to walk towards the Shaoyin meridian. In excess conditions, there is nasal congestion and pain in the head and back; in deficiency conditions, there is epistaxis. Treat by taking the point at its collateral origin. The collateral of the Foot-Shaoyang meridian is named Guangming (Bright Light). It is five cun from the ankle, diverging to walk towards the Jueyin meridian, and downward linking with the dorsum of the foot. In excess conditions, there is jue-cold (cold extremities); in deficiency conditions, there is wei-syndrome (flaccidity) and difficulty rising from a sitting position. Treat by taking the point at its collateral origin. The collateral of the Foot-Yangming meridian is named Fenglong (Abundant Bulge). It is eight cun from the ankle, diverging to walk towards the Taiyin meridian. Its branch follows the lateral border of the tibia, ascends to link with the head and nape, gathering the qi of all meridians; downward it links with the throat. If qi rebels, it leads to lou-bi (sore throat with hoarseness). In excess conditions, there is mania and epilepsy; in deficiency conditions, there is inability to hold the feet and dryness of the shins. Treat by taking the point at its collateral origin. The collateral of the Foot-Taiyin meridian is named Gongsun (Grandson). It is one cun posterior to the root of the first metatarsal bone, diverging to walk towards the Yangming meridian. Its branch enters and links with the intestines and stomach. If jue-qi rebels upward, it leads to huoluan (cholera-like syndrome). In excess conditions, there is cutting pain in the intestines; in deficiency conditions, there is abdominal distension like a drum. Treat by taking the point at its collateral origin. The collateral of the Foot-Shaoyin meridian is named Dazhong (Great Bell). It is located behind the ankle, surrounding the heel, and diverging to walk towards the Taiyang meridian. Its branch travels along the main channel upward to below the Xinbao (Pericardium), externally penetrating the lumbar spine. If qi rebels, there is restlessness and oppression. In excess conditions, there is urinary retention; in deficiency conditions, there is lower back pain. Treat by taking the point at its collateral origin. The collateral of the Foot-Jueyin meridian is named Ligou (Snail Ridge). It is five cun from the medial malleolus, diverging to walk towards the Shaoyang meridian. Its branch travels along the shin, ascends to the testis, and knots at the penis. If qi rebels, there is swelling of the testis and sudden hernia. In excess conditions, there is priapism; in deficiency conditions, there is sudden itching. Treat by taking the point at its collateral origin. The collateral of the Renmai (Conception Vessel) is named Wei Yi (Tail Feather/Caudal Cover). It descends from Jiwei (Jade Finial), spreading over the abdomen. In excess conditions, there is pain in the abdominal skin; in deficiency conditions, there is itching. Treat by taking the point at its collateral origin. The collateral of the Dumai (Governor Vessel) is named Changqiang (Long Strength). It runs alongside the erector spinae muscles, ascending to the neck, spreading over the head, and descending to the left and right of the scapulae, diverging to walk towards the Taiyang meridian, entering and penetrating the erector spinae muscles. In excess conditions, there is rigidity of the spine; in deficiency conditions, there is heaviness of the head causing it to sway uncontrollably. For pathologies along the spine, treat by taking the point at its collateral origin. The large collateral of the Spleen is named Dabao (Grand Wrap). It emerges three cun below Yuanshi (Abyss Spring), distributing over the chest and hypochondrium. In excess conditions, there is pain throughout the body; in deficiency conditions, all joints become flaccid and loose. These vessels, resembling a net of blood, should all be treated; this is the large collateral of the Spleen. Regarding these fifteen collaterals: in excess conditions, they must be visible; in deficiency conditions, one must look downward to find them. If not seen, seek above and below. Human meridians differ, and the points where collaterals diverge vary. (Such a grand structure summarized by the character 'cross', how divine and courageous!)
This chapter follows the structure of a two-part essay topic: first narrating the twelve regular meridians, then narrating the fifteen collaterals. The transition from meridians to collaterals in the middle acts as a bridge. The prose flows freely with an upright, heroic spirit. When describing the meridians, the brushwork at complex turns is light, agile, and clear, revealing every detail. One might ask, compared to the narrative details in the *Yu Gong* (Tribute of Yu), which is more complex and detailed? Which has sharper and faster brushwork? The characters "excess" and "deficiency" run through the entire text, representing the tightness of the composition's planning. Amidst the parallel arrangement and elaboration, there is naturally a twisty and enduring charm. Reading it feels as if spiritual light fills the page; solid parts seem void, rigid parts seem alive. The subtlety of the writing style is unparalleled in history.