Not over varicose veins, bruises or broken skin.
陰包 Yinbao
“The Wrapping of Yin” · LV9
Foot Jueyin · 9 of 14
Where. On the inner thigh, four thumb-widths above the bony knob of the inner knee, in the seam between two muscles.
For. Low belly pain reaching the lower back; irregular periods.
Press. Gentle fingertip pressure, about a minute each leg.
Caution. Not over varicose veins, bruises or broken skin.
陰包，在膝上四寸股內廉兩筋間按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Yinbao Sits on the Inner Thigh
The dataset locates Yinbao in one measured sentence: on the medial aspect of the thigh, 4 cun above the medial epicondyle of the femur, between sartorius and vastus medialis. Unpacked for hands rather than rulers: the medial aspect is the inner face of the thigh, the side these pages call yin country; the medial epicondyle is the hard, rounded knob you can feel on the inner side of the leg just above the knee; and 4 cun comes to about four thumb-widths of your own hand, the cun being the traditional proportional unit taken from the body being measured. Sartorius is the diagonal strap that crosses the thigh, and vastus medialis is the full muscle mass bunching above the inner knee — the soft seam between them is the address the record describes.
The ground under the fingertip rewards attention. Skin, then a modest layer of soft tissue, then real muscle: this is well-cushioned country, far kinder to press than the bony ridges of the hand or the thin gaps of the chest wall. The seam itself moves with the body. Straighten the knee gently and the mass beside your finger firms; draw the heel toward the seat and the strap tightens into a taut cord across the thigh. No breath stirs this ground, and nothing delicate lies within a fingertip’s reach.
The channel map explains why tradition stationed an address halfway up this climb. The liver meridian runs one of the classical cartography’s steadier journeys — fourteen stations from the great toe, over the inner ankle, past the inner knee, and up the medial thigh before the mapped road turns inward. Its neighbour below rests at the inner end of the crease behind the knee; its neighbours above gather toward the root of the thigh. Classical texts describe the pathway circling the genital region, entering the lower abdomen, and rising again to the ribs. In five-phase teaching the liver belongs to wood, paired outwardly with the gallbladder, and tradition credits it with storing the blood and keeping qi moving smoothly — duties that colour everything this station was asked to mind.
A Self-Palpation Walkthrough
Sit upright on a firm chair with both feet flat and let the whole leg go heavy, because searching works best through relaxed muscle. Bend the left knee slightly. Trace up the inner edge of the leg from just below the inner knee until your fingers meet a distinct, hard knob of bone — the medial epicondyle. From that landmark, measure upward along the middle of the inner thigh using your own thumb as the rule: four thumb-widths, counted slowly. At the end of the count, explore gently for the seam between the strap crossing the thigh and the fuller mass beside it, and settle your fingertip there. Repeat the entire search on the other leg so both sides receive equal care.
Two quiet confirmations help before any pressing begins. Brace the foot against the floor and try softly to straighten the knee: the bulk beside your fingertip should harden — that is vastus medialis announcing itself. Then squeeze both knees together or draw the heel back: the long strap should tense under your finger — that is sartorius. The point lies in the valley between them. Touch barely at all and compare sides: many people sense a faint, blunt awareness at the true spot and very little a thumb-width away. If every direction feels like bare muscle belly, lighten your touch further and slide slightly until the seam reappears; patience finds what force cannot.
The classic mistakes are worth naming. Stopping too soon lands you on the muscle bulge directly above the knee, a neighbour with its own identity; drifting forward sets you on the front face of the thigh, which belongs to different channels altogether. Some searchers press the taut strap itself instead of the groove beside it; others count three thumb-widths where four are wanted. When the count goes doubtful, return to the knob at the inner knee and measure again, slowly. Force teaches the fingertips nothing here; lightness and repetition find the seam every time.
Reading the Name: The Wrapping of Yin
The characters carry their meaning openly. Yin 陰 means shade — the character pictures the shadowed side of a hill — and by extension the cool, nourishing, interior principle that traditional thought sets against yang’s brightness. Traditional anatomy assigns the inner aspects of the limbs to yin territory, climbed by the three yin channels of the foot, and classical teaching lays those three roads side by side along the limb: past the calf, the liver channel travels the middle of the three. A point standing on the medial thigh therefore lives deep in yin country, and the name opens with that address.
Bao 包 means to wrap, to envelop, to hold within — the same character inside everyday words for a parcel and for forbearance. As point-name vocabulary it paints enclosure: something gathered and kept, a wrapping rather than a gate or a well. Read simply, Yinbao names the inner thigh as a wrapper folded around the body’s quieter half — the place where yin is held and carried while the channel makes its long climb from toe to trunk. Like the gates, valleys, and courtyards scattered along every meridian, the metaphor does honest work: it tells you what kind of place this was imagined to be.
Pinyin renders the name Yīnbāo, and the tones repay character-by-character checking. Both syllables carry the first tone, written with a macron — ī in yīn and ā in bāo — the flat, high, level delivery that holds steady from start to finish. Dictionaries give yīn for 陰 in its everyday sense of shade, and bāo for 包 in its sense of wrapping, matching the dataset exactly. A pleasing coincidence hides in the phonetics: Mandarin’s own label for the first tone is yinping, which borrows the very character that opens this point’s name. The hanzi pair 陰包 stays short enough to memorise at a glance, and like most channel names it folds a small geography into two characters.
Traditional Indications, Explained
The recorded indications read: pain of the lower abdomen radiating to the lumbosacral region, difficult urination, enuresis, and irregular menstruation. Framed as tradition rather than promise, the first entry describes ache settling low in the belly and tracking backward toward the sacrum and low back. Old reasoning connected such complaints to movement failing — qi and blood not gliding smoothly through the lower burner — and the liver pathway’s mapped route, swinging around the pelvic floor before entering the lower abdomen, gave stations along the medial thigh a natural seat in any discussion of that territory.
The two urinary entries follow the same logic. Difficult urination, in the traditional frame, belonged to water held for want of free qi flow, and the pathway passing the genital region made its mid-thigh stations candidates for consultation whenever flow faltered. Enuresis — involuntary wetting — the classics grouped among disorders of the lower burner’s governance, again reached along the same stretch of road. Irregular menstruation draws on the deepest of the liver’s traditional portfolios: the teaching that the liver stores the blood and guides its smooth distribution ties the organ to women’s cycles, and liver-channel stations recur throughout gynecological discussions in the classical literature.
These four entries are history, not prescription. They record how practitioners of another era reasoned from channel maps to complaints, and they survive here as cultural documentation. No modern trial establishes that pressure at this particular point changes urination, sleep-wetting, or menstrual rhythm; reviews of acupressure research suggest effects, where found at all, are modest and heavily dependent on setting, and evidence attached to any single named point remains thin. Treat the list as a window into the tradition’s logic. Treat the complaints themselves as matters for clinicians first: new urinary difficulty, bleeding, or cycle changes deserve professional assessment before any self-care routine begins.
Self-Care Acupressure at Home
With the point located by the walkthrough above, settle into position: seated, spine tall but unforced, thighs released. Curl your index and middle fingers together and rest the pads — never the tips, elbows, or tools — on the seam. Begin with contact alone for a few slow breaths, then add small, unhurried circles, letting the skin glide over the muscle beneath. Pressure should read as a comfortable ache spreading softly; anything sharp means too much. A common home rhythm is one to three minutes per side, once or twice daily, matched where possible to long exhales, with the two sides treated alike.
How the minutes are spent matters more than how many pile up. Cool hands work poorly — rub them warm first, since chilled muscle quietly braces against contact. Choose a quiet corner over a screen and let the practice double as a pause in the day; readers who keep it up fasten it to something already there — after lunch, before the evening wind-down — because what these traditions reward is regularity, not heroics. A minute of pressure followed by easy movement, such as a short stroll or a few unhurried knee bends, suits the thigh better than stretching cold muscle hard.
Treat the minutes as a small act of attention rather than a treatment session. Across weeks, notice what changes: perhaps the seam feels less guarded, perhaps the pause becomes the day’s quietest interval, perhaps nothing shifts except that you spent those minutes looking after yourself. 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. When curiosity pulls that way, come back to softness, or set the practice down until tomorrow; the wrapping of yin keeps without being squeezed.
Cautions and Safe Practice
The licensed record carries no specific caution for Yinbao, and geography explains much of that calm: the point sits amid thick, well-padded muscle, far from the lungs behind thin rib spaces and far from the eyes and other delicate structures that make some addresses anxious reading. Two qualifications temper the calm. Deeper in this muscular corridor travel the sizable vessels and nerves that supply the leg — structures no surface touch should chase, and one more reason home practice stays light and strictly superficial. And a quiet record is permission for gentleness, never for force.
The practical rules are simple. Use finger pads only and keep pressure comfortable throughout; press over intact skin, skipping bruises, varicose veins, broken or irritated patches, and anywhere recently injured or operated on until a clinician clears ordinary activity. Sharp, electric, or radiating sensation means stop at once and do not try again that day. Pregnant readers should speak with a qualified practitioner before taking up any new point practice, and anyone managing diagnosed circulatory, urinary, or gynecological conditions does well to ask first — not because gentle surface contact is known to harm, but because personal histories deserve personal counsel.
The widest rule frames everything else: this page is educational, and acupressure is self-care — never diagnosis, never therapy. Certain stories demand prompt professional attention rather than any pressure routine: inability to pass urine at all, blood in the urine, urinary trouble accompanied by fever, sudden new loss of bladder control, or pain in the groin or thigh following a fall or accident. Persistent symptoms belong with a licensed practitioner — Western medicine or East Asian medicine, whichever suits the complaint. For everyone else, the safest gift Yinbao offers is a better acquaintance with the strong, quiet landscape of the inner thigh, attended kindly and pressed lightly.
Yinbao, the Wrapping of Yin, stands on the inner thigh where the liver channel climbs from foot to trunk — four cun above the knob at the inner knee, between two muscles. Classical practice consulted it when lower-abdominal pain tracked toward the low back, when urine would not flow, or when cycles fell out of rhythm. This guide shows how to find it by touch and press it gently at home.
Self-care limits
Frequently asked
- How do I find Yinbao without knowing anything about cun?
- Let the knee be your ruler. Find the hard knob of bone at the inner side of the leg just above the knee, then walk your own thumb-widths straight up the inner thigh — four of them, counted slowly. At the end of the count, search for the soft seam between the taut strap crossing the thigh and the fuller bulge beside it. That seam is the location the dataset describes. The recorded 4 cun simply encodes this same four-thumb measurement in the traditional proportional language.
- Is pressing Yinbao myself actually safe?
- Gentle fingertip pressure held on the surface is generally reasonable self-care for healthy adults: the licensed record lists no specific caution for this point, because deep padding of muscle covers the area and nothing fragile sits within reach of surface contact. Keep the pressure light, use pads rather than tips, stay on intact skin away from bruises and varicose veins, and honour the stop signals — sharp, electric, or spreading sensation means finish immediately and rest the point for the day.
- What did classical practice use Yinbao for?
- The traditional record lists pain of the lower abdomen radiating to the lumbosacral region, difficult urination, enuresis, and irregular menstruation. Classical reasoning connected all four to the liver pathway’s journey past the genital region and into the lower abdomen, reinforced by the teaching that the liver stores the blood and keeps qi moving smoothly. Those are traditional frameworks for understanding the body, documented for context — not evidence-backed treatment claims.
- Why does the liver channel climb the inner thigh?
- The classical map draws the liver road beginning at the great toe, rising over the inner ankle, past the inner knee, and up the medial thigh before turning inward toward the pelvis and eventually surfacing at the ribs. Along the way it travels the middle of the three yin roads of the leg. Climbing the inner thigh is simply how the mapped route joins the leg to the pelvic organs it serves — and Yinbao marks a resting place halfway up that climb.
- Can acupressure replace seeing a doctor about urinary problems?
- No. Self-acupressure is a comfort practice, not a diagnostic tool, and urinary complaints carry red flags that outrank any routine: complete inability to pass urine, blood in the urine, fever alongside urinary trouble, or abrupt new leakage. Those need prompt professional assessment. Think of gentle pressure as a daily companion to health rather than a stand-in for it — useful for settling, never equipped to investigate.
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 and liver-channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for LV9 Yinbao — location, 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/lv9/leaf.json
- GET /zh-hant/points/lv9/leaf.json
- GET /zh-cn/points/lv9/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "LV9",
"name": {
"en": "Yinbao",
"gloss": "The Wrapping of Yin",
"zh-Hant": "陰包",
"zh-Hans": "阴包"
},
"channel": {
"id": "LV",
"order": 9,
"of": 14
},
"location": {
"text": "On the inner thigh, four thumb-widths above the bony knob of the inner knee, in the seam between two muscles."
},
"for": [
"low belly pain reaching the lower back",
"irregular periods"
],
"press": {
"text": "Gentle fingertip pressure, about a minute each leg.",
"seconds": 60,
"sides": "both"
},
"cautions": [
"Not over varicose veins, bruises or broken skin."
],
"source": "Zhenjiu Jiayi Jing, book 3",
"url": "https://acupoints.com/en/points/lv9",
"lastReviewed": "2026-08-24"
}