曲池 Quchi
“Bent Pool” · LI11
Hand Yangming · 11 of 20 · he-sea
Where. Bend the elbow: halfway between the outer end of the crease and the bony knob on the outside of the elbow.
For. An aching arm, fever, itchy skin.
Press. Firm thumb pressure, about a minute each arm.
曲池者，土也。在肘外輔骨肘骨之中按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
配 · Pairs with
鄰 · Neighbouring leaves
症 · Often paired with
Where Quchi Sits at the Outer Elbow
With the elbow bent to a right angle, Quchi occupies the outer — thumb-side — end of the elbow crease. The dataset locates it at the midpoint of the line joining the lateral end of the crease to the lateral epicondyle of the humerus, the rounded knob of bone on the outside of the elbow. Notice what is missing: no cun measurements at all. Many points ask you to convert proportional units before you search; Quchi asks only for two landmarks and the halfway point between them, which makes it one of the friendliest locations on the body for a beginner working without a chart.
What lies under the fingertips here is busy country. Between the crease-end and the bony knob sits a shallow hollow occupied by the fleshy upper reaches of the forearm muscles, with several tendons converging toward the epicondyle, where the muscles that lift the wrist and hand take hold. This is working tissue that contracts countless times a day, so a mild, diffuse ache under light pressure is common and unremarkable. Bend the elbow fully and the muscles bunch aside; the hollow deepens into a small basin — the very picture the point’s name paints.
Channel geography completes the placement. Classical maps draw the large intestine pathway starting at the outside of the index finger, climbing the radial border of the forearm, passing directly through this elbow region, and continuing up the arm, across the shoulder, and along the neck to finish beside the nostril. Quchi stands at the great way-station where the channel crosses the elbow, and classical teaching assigns it a special rank there: it is the channel’s he-sea point, the place where the flow, having run narrow and quick from the fingers, is described as pooling deep and broad like a river entering its lower reach.
Finding Quchi by Touch: A Walkthrough
Sit comfortably and bring the left elbow to a right angle, palm angled upward, letting the forearm go heavy and loose. First, trace the elbow crease from the inside outward with a fingertip until you feel it end at the outer edge. Second, find the rounded bony prominence on the outer aspect of the elbow — the lateral epicondyle — with your other hand. Third, picture a line joining crease-end to knob and rest your fingertip at its middle. Press feather-light: most people find a faintly tender spot there, a small hello from a place that rarely receives attention. Repeat the whole search with hands swapped so the other side gets equal care.
A few confirmations help before pressing begins. Slowly straighten and re-bend the elbow and feel the hollow open and close under your finger — the true site softens and fills with the movement. Compare sides with the lightest possible touch; the genuine point usually carries a hint more dull awareness than the skin half a finger-width away. Calibrate against texture too: bare bone means you have drifted onto the knob itself, so retreat toward the crease; dense, springy muscle means you sit low in the belly of the forearm extensors, so nudge back up toward the midpoint. Whenever the picture muddles, return to the two landmarks and start again.
Three mistakes account for most missed finds. Searching with the arm held perfectly straight hides every landmark under tension — keep the elbow bent throughout. Wandering to the inner end of the crease strays into another channel’s territory altogether; Quchi keeps to the outside. And pressing hard while hunting numbs the very sensitivity you are relying on, so explore with the weight of a coin rather than the push of a thumb. Slowness is the whole trick: the landmarks announce themselves to patience.
Reading the Name: Bent Pool
The name is a landscape sketch in two characters. Qu 曲 means bent or crooked — a picture of something folded away from straightness — and chi 池 means a pool, a still body of collected water. Together they describe precisely what the flexed elbow presents: at the bend, a small pond-like hollow gathers. Classical naming loved this move, casting the body as terrain of valleys, seas, markets, wells, and courtyards; the elbow bend simply became a pool in that geography, and the image has travelled with the point for centuries.
Pinyin renders it Qūchí, with a level first tone on qu and a rising second tone on chi; the hanzi pair 曲池 is spare enough to memorise at a glance. The watery imagery is not decoration but theory. Classical teaching arranges certain points below the elbow and knee into a graded sequence likened to waters maturing downstream — a well-spring at the fingertips, then a spring, a stream, a river, and finally the he-sea point where the current is said to gather widest and deepest. As the large intestine channel’s he-sea point, Quchi holds the pool at the bottom of that cascade for its own channel, which is why the name suits its rank.
One further classical layer completes the picture. In the five-phase correspondences through which traditional teaching organised the points, the he-sea points of the yang channels of the limbs all belong to earth, and earth is the phase that generates metal — the phase paired with the large intestine. Tradition therefore reads Quchi as the channel’s mother point, a wellspring of nourishment for the whole pathway. Whether or not one adopts the framework, knowing it explains a great deal: it is why one modest hollow at the elbow shows up in classical discussions of such varied complaints.
Traditional Indications, Explained
Read plainly, the recorded list is long: painful obstruction and paralysis of the arm, febrile disease, hypertension, mania, abdominal pain, vomiting and diarrhoea, sore swollen throat, toothache, urticaria, eczema, and cervical scrofula. The largest cluster concerns the arm, and the reason is simple channel logic — the point sits mid-route on the pathway serving the limb, so aches, numbness, and weakness along that route belonged to its traditional portfolio. Painful obstruction is a distinct classical concept: stiff, heavy, achy discomfort understood as qi and blood failing to move freely, a frame readers meet throughout old case literature. Febrile disease gathered the era’s feverish illnesses, and tradition repeatedly casts this point as a place practitioners reached to help clear heat — presented here as the tradition’s reasoning, not a modern claim.
The skin entries travel together. Urticaria and eczema were read in the tradition as heat and wind surfacing at the skin, and this point recurs across classical discussions of eruptive, itching complaints; sore swollen throat and toothache receive their explanation from the channel’s climb to the face. Abdominal pain with vomiting and diarrhoea rests on a classical axiom that the he-sea points serve the bowel organ belonging to their own channel. Cervical scrofula, finally, is an archaic name for knotted swellings in the neck, and it belongs firmly to history: anyone who discovers such swellings today needs medical assessment promptly, without detour through any self-care routine.
Two modern-worded items deserve honest handling. Hypertension and mania stand in the list largely as translations of what older records described — dizziness, pounding head, restless agitation filed under other names — recast into present-day vocabulary. Everything on the page’s list is offered as cultural and historical record, not as evidence-backed promise; where modern research touches self-applied pressure at all, reviews suggest effects are modest and context-dependent, and evidence tied to any single point remains thin. Blood pressure in particular belongs under a clinician’s continuing oversight, whatever else a person enjoys doing at the kitchen table.
Gentle Self-Care Pressing at Home
Settle in seated, elbow bent loosely over a cushion or a table edge, forearm surrendered to gravity. Locate the point by the walkthrough above, then rest the pad of the thumb — or the joined pads of index and middle fingers — on it. Begin with contact alone for a few easy breaths, then add small, slow circles, letting the skin glide over the tissue rather than grinding across it. Aim for pleasant dullness or mild warmth, never sharpness. A common home rhythm is one to three minutes per side, once or twice daily, matched to slow exhales so each circle rides the breath out; then swap hands and give the other side its symmetrical turn.
Quality outranks duration here as everywhere in self-care. Light, patient, regularly repeated touch is the entire method; hard digging only tires the elbow and teaches it nothing. Warm cold hands before starting, choose a quiet corner over a screen, and treat the minutes as a pause rather than a chore. If the elbow is freshly aggravated — after sport, a long day of typing, or carrying heavy loads — either skip the day or halve the pressure; traditions of tending the body prize timing and gentleness over force. People who keep the habit usually anchor it to something already in the day: morning coffee steeping, an afternoon stretch, the moment the kettle boils.
Think of the practice as upkeep for attention rather than repair for the arm. Over weeks you may notice the outer elbow feeling less guarded, or breathing settling while you press, or perhaps nothing shifting except that two minutes a day now go to noticing your own body. Every one of those outcomes fits the honest scope of self-acupressure. What does not fit is escalation — adding force or minutes to chase a result. Curiosity that pulls that way is best answered with a lighter hand, or with stopping for the day.
Cautions and Safe Practice
Begin with the record, told straight: unlike some high-stakes locations, the licensed dataset attaches no point-specific caution to this entry, and the echoed caution list on this page is therefore empty. Emptiness describes the paperwork, not the physics. The outer elbow carries crowded tendon attachments, and the inner hollow of the elbow nearby conducts vessels and nerves that professional training treats with care; surface touch engages almost none of that depth, while force invites a different conversation entirely. Light, shallow, unhurried — keep those three words and the boundary holds.
Practical rules follow from that picture. Use finger pads only — no elbows, knuckles, massage tools, or devices. Skip the point over broken skin, sunburn, bruising, an actively flaring rash, or anywhere recently injected or injured; give a recent elbow sprain, fracture, or surgery wide berth until ordinary activity is cleared by a clinician. During a feverish illness, let the body rest instead of practising. Sharp, electric, or tingling sensations running down the forearm mean stop at once — and not just for the day. Pregnant readers, and anyone managing chronic illness, should check with a qualified practitioner before adding any new point practice to their week.
And the wider rule stands over the page: this material is educational, self-applied acupressure is comfort care, and neither diagnoses nor treats anything. Seek prompt medical attention — not more pressing — for new lumps in the neck, rashes that spread or refuse to settle, a hot swollen joint after injury, or the warning signs that can travel with raised blood pressure: severe headache, chest pain or pressure, blurred vision, one-sided weakness. Those last ones are emergencies. Persistent symptoms of any kind belong with a licensed practitioner. The pool imagery is charming, but the safest thing Quchi offers most people is a friendly, respectful acquaintance with their own elbow, handled kindly.
Quchi, the Bent Pool, waits at the outer end of the elbow crease — the spot the flexed arm turns into a shallow basin. Classical practice returned to this point constantly, reaching for it in fevers, irritable skin, and aching arms alike. This guide walks through finding it by touch and pressing it gently and safely.
Self-care limits
Frequently asked
- How do I find Quchi without learning any measuring system?
- You barely need one. Flex the elbow to a right angle, find where the elbow crease ends on the outer side, find the round knob of bone just behind it, and press the midpoint between the two. The dataset’s own wording is landmark-based, so no cun conversions are required — the two bumps do all the arithmetic. If you lose the spot, simply restart from the crease-end.
- The dataset records no caution for this point — does that mean pressing it is risk-free?
- It does not. An empty caution field tells you the licensed records contain no point-specific warning, which is not the same as an assurance of safety — no self-care practice is risk-free. Gentle fingertip pressure on healthy skin is generally reasonable for adults, but the sensible limits stay on: light touch only, skip broken or flaring skin, stop on sharp or radiating sensation, and ask a practitioner first if you are pregnant or managing a chronic condition.
- What did classical practice use Quchi for?
- The traditional record spans arm complaints such as painful obstruction and weakness, fevers, sore swollen throat, toothache, hives and eczema, abdominal pain with vomiting or diarrhoea, and several conditions whose names have aged out of daily speech. Classical texts describe it as the channel’s he-sea point where qi gathers deep, which placed it high in discussions across the whole pathway. These are traditional frameworks for understanding the body, kept for context — not evidence-backed treatment claims.
- Why does one elbow point appear in so many different kinds of lists?
- Because classical medicine reasoned along channels rather than around isolated organs. One large intestine pathway runs from the forefinger to beside the nose, crossing the arm, shoulder, and face and linking inward to the bowel; a hub on that line was thought to influence the whole route. Add the he-sea ranking and the five-phase reading of Quchi as the channel’s mother point, and its wide classical portfolio stops looking random. The system differs from modern mechanistic thinking, and appreciating that difference matters more than adjudicating it.
- My blood pressure runs high — can pressing Quchi take the place of my care plan?
- No. Keep following the plan your clinician set, and change nothing because of a point page. Self-acupressure is a comfort practice with no diagnostic value, and blood pressure deserves continuous professional oversight, not occasional kitchen-table attention. If you ever notice severe headache, chest pain or pressure, blurred vision, or one-sided weakness, seek emergency care immediately. Anyone wishing to add new wellness habits alongside treatment should raise them with their doctor first.
Sources
- 01WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), World Health Organization — nomenclature conventions.
- 02A Manual of Acupuncture, Peter Deadman, Mazin Al-Khafaji and Kevin Baker — point-name tradition, he-sea theory, and channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for LI11 Quchi — location, point class, actions, and caution record.
Last reviewed
牌記This leaf, for machines
Old books ended with a colophon saying who printed them. Every leaf here carries the same facts as structured data for agents and search, with no layout in the way.
- GET /en/points/li11/leaf.json
- GET /zh-hant/points/li11/leaf.json
- GET /zh-cn/points/li11/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "LI11",
"name": {
"en": "Quchi",
"gloss": "Bent Pool",
"zh-Hant": "曲池",
"zh-Hans": "曲池"
},
"channel": {
"id": "LI",
"order": 11,
"of": 20
},
"location": {
"text": "Bend the elbow: halfway between the outer end of the crease and the bony knob on the outside of the elbow."
},
"for": [
"an aching arm",
"fever",
"itchy skin"
],
"press": {
"text": "Firm thumb pressure, about a minute each arm.",
"seconds": 60,
"sides": "both"
},
"cautions": [],
"source": "Zhenjiu Jiayi Jing, book 3",
"url": "https://acupoints.com/en/points/li11",
"lastReviewed": "2026-08-24"
}