Hand Yangming,
the Large Intestine channel

The Large Intestine Channel at a Glance

In the classical map of East Asian medicine, twelve principal channels were traced along the limbs and torso, and the large intestine channel — the hand yangming channel — takes one of the least typical routes among them: upward. Where many lines descend the limbs, this one starts at the index finger and climbs the arm’s thumb-side margin, rounds the elbow and the shoulder, ascends the neck, and arrives at last beside the nostril. The site’s catalogue gives it twenty points, numbered LI1 through LI20. Like its partner the lung channel it belongs to the metal phase, carrying all the autumnal imagery that implies; its “yangming” epithet, conventionally read as “yang brightness,” ranks among the grander titles in the channel canon.

This page is the whole-channel companion to those twenty point pages. It retells the pathway as classical sources understood it, introduces the points and the roles tradition assigned them, and gathers self-care ideas that stay strictly within light-touch territory. It is educational material, not medical advice, and it teaches no diagnostic or therapeutic technique. A note on wording: phrases such as “traditionally used for” or “recorded indications” report what historical practice reached for — they describe a heritage, not proven outcomes.

Tracing the Line: Index Finger to Nostril

The climb begins at shangyang (LI1), on the radial side of the index finger right beside the corner of the nail. From there the pathway follows the finger’s outer edge up over its knuckles, where erjian (LI2) and sanjian (LI3) occupy small depressions either side of the second knuckle joint, then crosses the muscular web between thumb and index finger — hegu (LI4)’s home, in the hollow between the first and second metacarpal bones. At the wrist the line reaches the radial end of the crease on the back of the wrist, in the hollow that opens between two thumb tendons when the thumb tilts upward: yangxi (LI5).

From that wrist hollow the channel runs a remarkably straight course up the forearm: classical location texts place the next five points on the single line joining yangxi (LI5) to the outer end of the elbow crease. Counting upward from the dorsal wrist crease, pianli (LI6) waits three cun along and wenliu (LI7) five; counting down from the elbow crease come xialian (LI8) at four cun, shanglian (LI9) at three, and shousanli (LI10) at two. The cun numbers thus unfold along one straight rail. The elbow itself hosts the channel’s busiest address, quchi (LI11), at the lateral end of the crease — found, in the classical recipe, midway between that crease-end and the bony bump on the outside of the bent elbow.

Above the elbow the line hugs the arm bone: zhouliao (LI12) lies one cun above quchi on the border of the humerus, shouwuli (LI13) three cun up, and binao (LI14) seven cun up where the deltoid muscle takes hold. At the shoulder, jianyu (LI15) sits in the hollow below the outer collarbone knob that appears when the arm is raised, and jugu (LI16) occupies the gap between the collarbone’s outer end and the spine of the shoulder blade. Two neck stations flank the thick strap muscle that turns the head — futu (LI18) level with the Adam’s apple between the muscle’s front and rear borders, tianding (LI17) lower down on its rear border — before the line reaches the face at kouheliao (LI19), just beneath the outer edge of the nostril, and closes at yingxiang (LI20) in the groove beside the nose wing. Classical accounts also sketch interior passages — a descent toward the chest to bind with the lung and its own organ, a threading of jaw and gums, a circle of the upper lip to the opposite nostril — and picture the current handing over to the stomach channel at the nose.

Twenty Points, One Climbing Line

Classical physiology liked to liken each channel to a waterway: a spring rising, gathering into streams, swelling into rivers, reaching the sea. The five shu points of the hand and arm borrow that ladder, and the large intestine channel owns nearly the whole set. Shangyang (LI1), the jing-well point at the nail corner, stands where the current is barely born; classical texts reach for it around toothache, sore swollen throat, and febrile disease. Erjian (LI2), the ying-spring, and sanjian (LI3), the shu-stream, continue the metaphor along the index finger, and the recorded indications at all three cluster tightly around teeth, nose, throat, and heat.

Hegu (LI4) is the celebrity. As the channel’s yuan-source point it is classically read as a window onto the organ’s own vitality, and its recorded indications sprawl across the head and face — headache, toothache, red swollen eyes, nosebleed, stiff neck — alongside wider entries such as febrile disease with absent or excessive sweating. Centuries of commentary accumulated around it; the same dataset that records its actions records a firm pregnancy caution, and this page keeps deferring the details to the point’s own page. Just beyond, yangxi (LI5) fills the tendon hollow at the wrist as the jing-river point, with wrist pain and headache among its recorded concerns.

The forearm contributes specialists. Pianli (LI6) serves as the luo-connecting point — the formal bridge to the paired lung channel — with tinnitus, nosebleed, conjunctivitis, and aching of the arm recorded. Wenliu (LI7) holds the xi-cleft title, the slot tradition reserves for moments when a channel’s activity suddenly intensifies; its older entries include acute borborygmus and abdominal pain, boils and sores, and facial swelling. Shousanli (LI10), two cun below the elbow crease, gathers arm weakness and abdominal complaints together in one place. Then comes quchi (LI11), the he-sea point where the river metaphor lands: among the most heavily annotated addresses in the classical corpus, its recorded list spans febrile disease, urticaria, eczema, sore swollen throat, abdominal pain, vomiting and diarrhoea, and hypertension. The line’s last word belongs to yingxiang (LI20), a crossing point beside the nostril whose recorded indications — nasal congestion with loss of smell, deviation of the mouth — suit a channel that ends exactly where breath meets face.

A Metal Channel Paired with the Lung

Channels in classical theory rarely travel alone: each of the twelve is bound to a partner in an exterior–interior pairing, and the large intestine channel’s partner is the lung channel — the very line whose territory it borders at the hand. The lung channel finishes at the thumb; a slender branch described in classical sources reaches toward the index finger, where this channel begins. Mid-forearm, pianli (LI6)’s connecting vessel formally ties the pair together again. Because of this linkage, traditional practice reads symptoms across the two lines — a sore throat or a skin complaint discussed partly in lung-channel terms even when a large intestine point is chosen — treating the pair less as two roads than as one landscape seen from either bank.

The kinship runs deeper than geography. Both channels belong to the metal phase in the five-phase framework, with its associations of autumn, dryness, clarity, and letting go. The large intestine channel also carries the “yangming” label — conventionally rendered “yang brightness” — and classical teaching describes the yangming channels as unusually rich in qi and blood, busy thoroughfares where the body’s traffic concentrates. That historical reputation helps explain why so much classical attention settled on this channel’s points for head, face, and surface matters. These framings arrive as cultural and historical context, attributed generally rather than quoted, and they carry no weight as clinical statements.

Everyday Complaints in the Traditional Register

Glance at where the channel travels and its recorded indications fall into an intuitive pattern. Points along the index finger, hand, and forearm collect toothache, nosebleed, red eyes, and sore throat; the elbow and upper-arm group adds skin complaints such as urticaria and eczema alongside aching shoulders and arms; the neck pair concerns voice and swallowing; the final facial points focus on the nose and mouth. Woven through are abdominal entries — borborygmus, abdominal pain, diarrhoea — a reminder that the channel keeps its appointment with its namesake organ somewhere beneath the chest. None of this is a menu of effects; it is a record of what generations of practitioners reached for, preserved in the dataset this site renders.

What might channel-based self-care honestly offer today? At minimum, a few minutes of deliberate slowing — quiet attention, longer exhalations, hands off the screens. Where modern research touches self-applied pressure at all, reviews suggest effects are modest and context-dependent, and the same reviews are candid that study quality varies and most applications remain unsettled. Treat any benefit as a bonus layered onto a pleasant pause, never as treatment. Toothache that lingers, a nose that stays blocked, skin that flares repeatedly, or any symptom that frightens you belongs with a clinician first; self-pressure can accompany good care, not substitute for it.

Gentle Self-Care Along the Channel

The channel suits tracing almost perfectly, because nearly every centimetre of it lies within reach of your own free hand. Rest a palm on the back of the opposite wrist and draw it lightly up the outer forearm, around the elbow point, along the outer upper arm, and across the curve of the shoulder — the same ascent the classical pathway makes. Feather-light pressure, unhurried pace, a few passes on each side. The neck stretch is best enjoyed as simple awareness rather than pressure, and the face is left to the point pages.

If you want specific destinations, three forgive beginners generously. Quchi (LI11), at the outer end of the elbow crease, welcomes a soft fingertip hold with the forearm resting on a table. Shousanli (LI10), two cun below that crease, takes a slow, patient press. Hegu (LI4), in the thumb–index web, feels pleasant to many people — but the dataset records a clear pregnancy contraindication there, so it stays untouched during pregnancy, and anyone taking medication that affects bleeding should ask a qualified practitioner before adding any point work. The home rhythm is the same everywhere: settle a fingertip, press only as firmly as feels pleasant, breathe slowly through several cycles, release gently.

A few fences keep the practice kind. Skip broken, inflamed, or numbed skin entirely; decline deep prodding; treat the neck stations as professional territory, since major vessels and nerves pass close beneath them. Sharp, electric, or radiating sensation is always a signal to stop at once. If you are pregnant, live with a health condition, or are simply unsure, a short conversation with a qualified practitioner costs little and settles much.

Who This Page Helps

This overview serves several kinds of reader. If you met hegu (LI4) on its own page and wondered what else shares its channel, the course above tells the whole climb in twenty named stops. If you have read the lung channel’s pages and want the partner’s side of the story, the pairing section lays the two lines side by side. Teachers, students, and writers who need a plain-language orientation before citing individual points will find the sequence and the classical roles set out without jargon walls; and anyone deciding whether to browse the twenty catalogue pages can use this page as a map of what each neighbourhood contains.

Some readers should travel onward faster. Sudden facial droop, severe or one-sided facial pain, persistent toothache, a nose that will not clear, unexplained swelling, or high fever are reasons to see a doctor promptly, not candidates for self-experimentation. People managing chronic concerns — recurring skin flares, bowel troubles, headaches — do best when licensed practitioners, including registered acupuncturists and East Asian medicine clinicians, work alongside their usual care rather than replacing it. When you are ready for detail, the catalogue pages for LI1 through LI20 carry precise locations, recorded actions, and dataset cautions that this overview deliberately leaves to them.