風市 Fengshi
“The Wind Market” · GB31
Foot Shaoyang · 31 of 44
Where. Stand with arms hanging: on the outer thigh, where the tip of the middle finger rests.
For. Numb or weak legs; itching all over.
Press. Steady fingertip pressure, about a minute each leg.
Fengshi — the Wind Market — stands on the outer thigh, seven cun above the crease behind the knee. Tradition treated it as a gathering place of wind, consulted when legs weakened or numbed, when itching roamed the skin, or when the old books spoke of beriberi. This guide covers finding it by touch and pressing it gently.
按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Fengshi Sits on the Outer Thigh
The dataset places Fengshi on the midline of the lateral aspect of the thigh, seven cun above the popliteal crease. Each clause earns its unpacking. The popliteal crease is the transverse crease at the back of the knee — the soft fold of skin that deepens when the knee bends — so seven cun means seven proportional units measured straight up the leg from that fold. A cun is the traditional unit of Chinese point-location, taken from the person being examined rather than from any ruler: the width of your own thumb at its knuckle is the everyday approximation. And the midline of the lateral aspect is geometry, not decoration — the outer face of the thigh has a front boundary where it rounds into the quadriceps and a back boundary where it turns toward the hamstrings, and the point stands halfway between them, on the true centre line of the outer thigh.
The terrain beneath the skin here is among the most forgiving on the whole body. Forward lies the vastus lateralis, the broad outer sweep of the quadriceps; behind sit the hamstring muscles; and down the very centre of the outer face runs a dense strap of connective tissue, taut from hip to knee. Deep muscle, strong fascia, no ribs, no lungs, no shallow hollows — the classical location literature reserved its sharpest warnings for thin-walled territory near the chest and abdomen, and this stretch of thigh is simply not that territory. Generosity of padding, though, is not a licence for force. Everything worth learning about this spot announces itself to light, patient fingertips, and the search never requires strength.
Fengshi holds the thirty-first place among the forty-four points the registry assigns to the gallbladder channel. The classical descriptions carry that channel on a long journey: zigzagging down the side of the head, descending along the side of the trunk, crossing the hip region, then running straight down the outer thigh toward the knee and onward to its end at the fourth toe. This point sits squarely on the open stretch of that road where it crosses the thigh. Its next neighbour down the leg, Zhongdu (GB32), is recorded two cun below Fengshi — five cun above the popliteal crease — so the two entries corroborate each other’s arithmetic, and either can be used as a check on the other.
A Self-Palpation Walkthrough
The dataset preserves a famously simple method: stand upright with the hands hanging naturally at the sides, and the spot where the tip of the middle finger rests against the thigh is Fengshi. Try it slowly. Stand with feet parallel, shoulders easy, arms heavy and unforced, eyes soft rather than hunting downward. Notice where the fingertip lands — well up the outer face of the thigh from the knee, around the middle stretch of the leg. Then confirm from the other direction: sit comfortably, find the crease at the back of one knee, walk your fingertips up the outside of the leg about seven thumb-widths, and settle at the centre of the outer face of the thigh, halfway between its front and back boundaries. Where the two searches agree, trust the answer.
Two light confirmations help before any pressing begins. First, touch feather-light and compare sides: many people notice a faint, dull awareness right at the true spot and little sensation a finger-width away, though responses vary from person to person. Second, notice how stance changes what the fingers read — the same region feels firm and full while standing and distinctly softer while seated with the leg supported, because the muscle tone shifts between them. Neither reading is wrong; they are the same address under different weather. Let a slow breath pass before judging anything by feel, and give both thighs the same patient attention rather than deciding from a single hurried touch.
Failed searches stumble in familiar ways. Measuring from the bony edge beside the kneecap instead of from the crease at the back of the knee loses an inch or more at once. Sliding too far forward lands on the round bulge of the quadriceps; sliding too far back drops the fingers onto the hamstrings — the centre line of the outer face is narrower than people expect. Locking the knees or tensing the leg flattens the very landmarks being hunted. And trusting the middle-finger method without any cross-check invites drift in anyone whose arm proportions differ from their leg length. When in doubt, return to the crease behind the knee and measure up again, unhurriedly.
Reading the Name: The Wind Market
The characters carry two everyday words pressed into service as medicine. Feng 風 means wind — the weather word first, but also, in traditional medical thought, the foremost of the six external influences: the classical frame blamed many sudden, wandering, shifting complaints on wind, and classical texts describe wind as ranking first among external causes of illness precisely because of that restlessness. Shi 市 means market — the place where people gather and goods change hands. Read together the way generations of commentators have read them, Fengshi is the wind market: the place where wind gathers, or — turning the image over — the stall where wind itself is traded away. Both readings circulated, and neither cancels the other.
The name does real work at this address. Wind-flavoured complaints in the traditional frame — numbness that comes and goes, itching that roams rather than sits still, weakness that seems to blow through the limbs — are exactly the groups the indication record gathers here, so the market image doubles as a map of the point’s historic portfolio. The position in the channel adds a second layer: thirty-first of forty-four, standing on the long descending road between the trunk and the fourth toe, at the busiest crossing of the lateral thigh. Markets grew at crossroads; a point named for trade sits naturally where traffic passes. Like the gates, pools, and courtyards elsewhere in the naming family, the metaphor quietly tells you how the tradition used the place.
Pinyin renders the name Fēngshì: feng holds a high, flat first tone, and shi drops sharply on the fourth tone. Two characters, few strokes each — easy to memorise at a glance. Point names drawn from commerce are rarer than those drawn from landscape, which makes this one memorable twice over: most points borrow mountains and water, but here the tradition borrowed the marketplace. Before any theory begins, the name already sketches the scene — a crossroads on the outer thigh where something restless collects, and where practice came, market-fashion, to bargain it away. The name is itself a small set of instructions.
Traditional Indications, Explained
The recorded indications read: atrophy, paralysis, and numbness of the lower limbs; generalised itching; beriberi; sciatica; lateral femoral cutaneous neuritis; and weak legs and knees. Framed as tradition rather than promise, the first group is the point’s home ground. Atrophy in the classical records belongs to a family of limb conditions the old texts described as wilting — flesh gone slack, strength gone missing, the leg unwilling. Numbness was understood as flow failing through the channels, the skin and muscle no longer nourished as they should be; paralysis was the gravest member of the same family. Classical practice approached all three along the channels serving the affected limb, and a major station on the lateral thigh stood high in such discussions.
Generalised itching follows the wind logic of the name directly: in the classical frame, itching that moves or flits was read as wind stirring in the skin, so a point named for gathering wind was consulted wherever itch wandered over the body. Beriberi needs careful words: the term translates jiaoqi, an old East Asian category of leg heaviness, swelling, and weakness documented for centuries — related by name to the vitamin-deficiency illness modern medicine calls beriberi, but historically a broader and different thing, and the distinction matters when old records are read today. Sciatica and lateral femoral cutaneous neuritis arrive as modern clinical names carried in the licensed record: pain radiating along the course of the sciatic nerve down the back of the leg, and discomfort along the sensory nerve crossing the outer thigh — both tracing routes this point overlooks.
It bears repeating plainly: these are the traditional uses recorded in a licensed dataset and classical literature, offered here for cultural and historical understanding. They are not claims that pressing this point treats disease, and nothing in this guide replaces assessment by a qualified clinician — especially not for numbness or weakness, which always deserve a professional explanation first. Where modern research touches self-applied pressure at all, reviews suggest effects are modest and context-dependent, and evidence specific to any single point remains thin. Hold the tradition lightly, and hold the safety rules firmly.
Self-Care Acupressure at Home
With the point located by the walkthrough above, settle in: seated on a firm chair, the foot of the treated side flat on the floor, thigh relaxed. Curl the index and middle fingers together and rest the pads — not the tips — on the spot. Begin with contact alone for a few breaths, then add small, slow circles, letting the skin glide over the muscle beneath rather than grinding against the thigh bone. Pressure should register as pleasant dullness or mild warmth, never sharpness; the thick padding here tolerates slightly firmer work than a chest point ever should, but slightly firmer is the ceiling, not the goal. A common home rhythm is one to three minutes per side, once or twice daily, matched where possible to slow exhales. Swap hands and repeat on the other side, keeping the sessions symmetrical.
Quality matters more than duration. Light, patient, regularly repeated contact fits the wellness register this page practises; hard jabbing teaches the body nothing and turns a quiet habit into a wrestling match with your own leg. If your hands are cold, warm them first — chilled muscle guards. Some people like to begin each session with a few long smoothing strokes down the outer thigh with an open palm, purely to settle attention before the fingertip work starts. Choose a quiet corner over a screen, since the practice doubles as a pause: feet grounded, breath slow, mind off its leash. People who keep a routine often anchor it to an existing habit — after morning washing, during an evening sit-down — because consistency, not intensity, is what self-care traditions actually ask for.
Treat the exercise as a small ceremony of attention rather than a treatment session. Notice what changes across weeks: perhaps the legs feel less heavy on the stairs, perhaps you simply spend ninety seconds a day attending to limbs that carry you everywhere unthanked. Every one of those outcomes fits the honest scope of self-acupressure. What does not fit is escalation — pressing harder, longer, or deeper to force a result. Numbness and weakness are symptoms with causes, not stubbornness to be pressed through; if they persist or worsen, the next step is a practitioner’s assessment, not more pressure. When curiosity pulls toward force, return to gentleness or stop for the day.
Cautions and Safe Practice
The licensed record attaches no specific caution to Fengshi, and the geography explains why. The outer thigh is among the most thickly padded regions of the body — deep muscle and strong fascia over solid bone, far from the lungs, the abdominal organs, and every hollow where the classical literature posts warnings. This page treats that absence honestly: it means the tradition felt no need to single this address out, not that force becomes welcome anywhere. Absence of a warning is a description of the record, never an instruction to press harder, and the universal rules below apply exactly as they would anywhere else.
For fingertip acupressure the practical rules follow from ordinary care. Use finger pads only — no elbows, knuckles, or tools — and keep pressure at pleasant-dullness level. Skip the point entirely over broken, irritated, or inflamed skin, during a feverish illness, and after any leg injury or surgery until a clinician clears ordinary activity. Sharp, electric, or radiating sensation — particularly anything shooting down the leg — means stop at once and do not try again that day, and mention it at your next appointment since sensation changes deserve a professional ear. Pregnant readers should consult a qualified practitioner before adding any new point practice, and readers living with conditions that alter leg sensation or circulation should do the same.
And the wider rule stands over everything: this page is educational, and acupressure is self-care, not diagnosis or therapy. Seek prompt medical care — not a longer pressure routine — for numbness that persists or spreads, weakness that progresses, one-sided swelling, skin discolouration, pain that worsens night after night, or any symptom that frightens you. Persistent symptoms belong with a licensed practitioner, Western or East Asian medical as suits the complaint, and new neurological signs belong with medical assessment first. The wind-market imagery is charming, but the safest gift Fengshi offers most people is a kinder acquaintance with their own legs — touched lightly, thanked often, and referred promptly whenever something feels wrong.
Self-care limits
Frequently asked
- How do I find Fengshi without knowing anything about cun?
- Use the standing trick as the whole map: stand upright, let both arms hang naturally at your sides, and see where the tip of each middle finger rests against the outer thigh — that spot is the location the dataset describes. Cross-check by sitting down, finding the crease at the back of the knee, walking up the outside of the leg about seven thumb-widths, and settling at the centre of the outer face of the thigh. Where the two methods agree, you have found it. Cun measurements simply encode the same landmark walk in proportional language.
- Does the middle-finger method really work for every body?
- It works because the method borrows the body’s own proportions — arm length broadly tracking height — so the fingertip lands near seven cun up the thigh for many people. But proportions vary, and a long-armed or short-legged frame can drift the answer. Treat the finger as a compass bearing, not a law: use it to get close, then confirm against the crease measurement from the back of the knee. When both agree, confidence is reasonable; when they disagree, trust the measured spot and repeat the comparison another day.
- Is pressing Fengshi myself actually safe?
- Gentle fingertip pressure held on the surface is generally reasonable self-care for healthy adults — this is thickly muscled territory with no vulnerable structures close beneath the skin, and the licensed record attaches no caution to the point. That describes the ground, not a licence: keep pressure at pleasant dullness, use pads rather than tools, and respect the stop signals. Sharp, electric, or radiating sensation, especially anything running down the leg, means finish immediately and let the day end there.
- What did classical practice use Fengshi for?
- The traditional record lists atrophy, paralysis, and numbness of the lower limbs; generalised itching; beriberi; sciatica; lateral femoral cutaneous neuritis; and weak legs and knees. The grouping follows the wind-market logic: complaints the classical frame read as wind-flavoured — wandering itch, coming-and-going numbness — gathered at a point named for trading wind away. Those are traditional frameworks for understanding the body, documented for context — not evidence-backed treatment claims.
- When should I skip this point entirely?
- Conservatively and often: over broken, irritated, or inflamed skin; during a feverish illness; after leg injury or surgery until a clinician clears ordinary activity; during pregnancy unless a qualified practitioner has advised otherwise; and permanently for that day the moment anything sharp or electric appears. Numbness or weakness that persists, spreads, or worsens belongs with medical assessment first — self-acupressure is a comfort practice alongside good care, never a substitute for it.
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, wind-market imagery, and channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for GB31 Fengshi — location, point class, actions, and indication 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/gb31/leaf.json
- GET /zh-hant/points/gb31/leaf.json
- GET /zh-cn/points/gb31/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "GB31",
"name": {
"en": "Fengshi",
"gloss": "The Wind Market",
"zh-Hant": "風市",
"zh-Hans": "风市"
},
"channel": {
"id": "GB",
"order": 31,
"of": 44
},
"location": {
"text": "Stand with arms hanging: on the outer thigh, where the tip of the middle finger rests."
},
"for": [
"numb or weak legs",
"itching all over"
],
"press": {
"text": "Steady fingertip pressure, about a minute each leg.",
"seconds": 60,
"sides": "both"
},
"cautions": [],
"url": "https://acupoints.com/en/points/gb31",
"lastReviewed": "2026-08-24"
}