Not in pregnancy unless a qualified practitioner directs it.
至陰 Zhiyin
“Reaching Yin” · BL67
Foot Taiyang · 67 of 67 · jing-well
Where. On the little toe, just beside the outer corner of the toenail.
For. Headache; eye pain; a blocked nose.
Press. Press the toe corner between thumb and finger, about a minute each foot.
Caution. Not in pregnancy unless a qualified practitioner directs it.
至陰者，金也。在足小指外側，去爪甲角如韭葉按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Zhiyin Sits on the Little Toe
The dataset locates this point on the little toe, on the lateral side of the distal segment, 0.1 cun from the corner of the toenail. Each phrase rewards a slow read. The little toe is the fifth and outermost toe; lateral side means the edge facing away from the fourth toe — the outer border of the foot continued to its very end. The distal segment is the toe’s last portion, beyond its middle joint, where only the final small bone remains. And 0.1 cun is barely a measurement at all: a cun is the traditional proportional unit taken from the wearer’s own body rather than from a ruler, and a tenth of one here works out to a sliver — essentially the width of the nail margin itself.
In everyday terms, then, the geography is compact. Lay the foot with the toes facing up and look at the littlest toenail: of its four corners, the one farthest from the fourth toe is the target. The point hides in the soft notch where that outermost corner of the nail meets the skin fold beside it, at the top of the toe’s last segment. Underneath the fingertip lie only thin skin, a whisper of padding, and the end of the small toe bone. Tissue this terminal is richly supplied with nerve endings, which is why toe-tip points are famously sensitive; a faint, dull awareness under light touch is normal confirmation, not a warning.
Position on the map matters as much as the millimetres. This is the closing address of the whole bladder channel: classical maps draw that pathway beginning at the inner corner of the eye, sweeping over the crown, descending the entire back and the backs of both legs, running out along the outer border of the foot, and finishing here at the little toe — the longest course assigned to any channel. Its nearest neighbor on the route, Zutonggu (BL66), waits just behind, on the same outer edge in front of the little toe’s knuckle joint. Smallest station, longest road: that double character shapes everything else on this page.
A Self-Palpation Walkthrough
Sit on a firm chair and rest your right ankle across the left knee, or prop the foot on a rolled towel so the little toe faces you comfortably — whichever lets the foot go completely slack, because a tensed toe tucks its own landmarks out of sight. Warm your hands first; cold fingertips read poorly and make feet flinch. Beginning at the heel, glide your index finger forward along the outer border of the foot until you run out of border: the littlest toe. Slide the fingertip onto its outermost edge, the face turned away from the fourth toe.
Now find the nail corner. Look at the little toenail and identify the corner farthest from the fourth toe. Rest the pad of your index finger in the soft notch just beside that corner, between the nail margin and the skin fold, level with the top of the toe’s last segment. Press feather-light. Most people meet a distinctly tender spot there — toe-tip points announce themselves readily — and the tenderness fades within a few millimetres in any direction, which is itself useful confirmation. Repeat the search on the other foot; the geography mirrors faithfully even when sensation does not report equally on both sides.
Three common mistakes deserve naming. The first is pressing on the nail itself, which yields only hard, silent keratin; the point lives in the skin beside the corner, not atop the plate. The second is drifting onto the soleward underside of the toe instead of holding the lateral corner — the sensation turns muffled and wrong. The third is hunting while standing, with body weight flattening the tissues; sit down and the landmarks return within seconds. And resist squeezing the toe between two fingers to hunt harder: firm compression numbs the very tip you are trying to listen to. Light reads better than hard, always.
Reading the Name: Reaching Yin
The two characters sketch a threshold. Zhi 至 means to reach, to arrive — the old written form pictures an arrow coming down to strike the ground, arrival frozen in a glyph — and by extension it came to mean the utmost, the extreme point of something. Yin 陰 means shade, the sheltered or hidden side, and in classical thought names one half of the great pairing of yin and yang that orders the tradition’s picture of the body. Read together, Zhiyin is Reaching Yin — or, with equal justice, Utmost Yin: the place where the journey arrives at yin.
Commentators have long offered two readings, and they complement rather than compete. The journey reading: the bladder channel belongs to the taiyang — the greatest yang — and classical teaching describes its course completing itself at this corner of the little toe, where the story hands over to its partner. The old maps draw the Kidney channel, the shaoyin yin counterpart, beginning beneath the little toe and crossing toward the sole before climbing the inner leg. This nail-corner notch is therefore the hinge where a yang channel reaches its end and touches yin. The place reading: the outermost corner of the smallest toe is a genuinely hidden crevice of the body’s frame, an utmost-yin nook at the far end of a yang road. Either way, the name marks a turning point.
Pinyin renders the name Zhìyīn. Zhì carries the fourth tone — the falling tone, delivered with a firm downward stroke, like a gavel settling a verdict. Yīn carries the first tone — high and level, a sustained note held steady. Like many of the oldest point names — gates, wells, valleys, storehouses — this one compresses a lesson into two syllables: come to the extremity, and find the turn. The name is a locating instruction that has stayed accurate for centuries.
Traditional Indications, Explained
The recorded indications read: malposition of the fetus, prolonged labour, headache, eye pain, nasal congestion, nosebleed, and urinary retention. Start with the head-end cluster, because the channel map explains it plainly. The bladder channel’s drawn course opens at the inner corner of the eye, crosses the crown, and descends the back — and classical reasoning treats stations along one route as addresses that answer for discomfort arising anywhere upon it. A point stationed at the channel’s far end therefore stood in the same corridor as the eyes, the nose, and the head, and the old literature routinely consulted distant stops along a pathway for complaints arising at its other extremity. Framed as tradition rather than promise, that is the logic behind listing headache, eye pain, nasal congestion, and nosebleed for this tiny corner of the little toe.
The two childbirth entries require plain speech. Classical records describe trained practitioners applying warmth-based techniques — moxibustion among them — at this point with the stated aim of encouraging a fetus lying awkwardly to settle, and point lists include difficult, drawn-out labour under its name. Those entries belong to history and to supervised professional care. They are not a home technique, and this page will not soften that: no pregnant reader should apply pressure, warmth, or any other stimulation to this point on her own initiative. Every question about fetal position or the progress of labour belongs with a midwife, an obstetrician, or a qualified East Asian medicine practitioner working alongside the maternity team. Whether such traditional approaches help in any given situation is a matter for professional judgment and careful research — not for assertion here, and no outcome is promised.
Urinary retention closes the list, and it needs its own honesty. Retention is a traditional heading for difficulty passing urine; today, being unable to urinate — especially suddenly, painfully, or in an older adult — belongs to same-day medical care, not to acupressure. More broadly, it bears repeating: these are traditional uses recorded in a licensed dataset and classical literature, offered for cultural and historical understanding. They are not claims that pressing this point treats disease. Where modern research touches pressure-based practices at all, reviews suggest effects are modest and context-dependent, and evidence aimed at 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, foot relaxed, the little toe facing you. Rest the pad of your thumb or index finger on the notch beside the nail corner and begin with contact alone for a few slow breaths, letting the toe grow used to being attended to. From there, choose a rhythm: either small, slow circles that let the skin glide over the tissue beneath, or a gentle press-and-hold — sink in slightly on a slow exhale, linger, release completely, and repeat for several rounds. Pressure should register as pleasant dullness or mild warmth, never sharpness. A common home rhythm is one to three minutes per foot, once or twice daily, finishing with the other foot so the two sides receive equal care.
Quality matters more than duration. Trim and clean the nails of the working hand first — toe-end skin is thin, and a ragged nail edge scratches where it means to soothe. Warm hands make gentler instruments. Choose a quiet corner rather than a screen, and consider pairing each release of pressure with a long exhale; many people find the practice lands best in an already-settled moment, after a bath or during an evening wind-down. Anchoring the minute or two to an existing habit — pulling on socks in the morning, sitting down after dinner — serves better than willpower, because consistency, not intensity, is what self-care traditions actually ask for.
Treat the exercise as a brief ceremony of attention rather than a treatment session. Across weeks you might notice the area feels less tender to the touch, that the foot feels more alive under your hand, or simply that you spent ninety seconds attending to the farthest reach of your own body. 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 particular result. On so small and sensitive a point, escalation is also the fastest way to bruise goodwill. When curiosity pulls that way, return to gentleness, or set the practice down for the day.
Cautions and Safe Practice
This point carries a genuine caution in the licensed record, and it concerns pregnancy directly. The dataset states that the point is contraindicated by needling in ordinary pregnancy care, with the exception of its classical use for fetal position performed under supervision. The line is drawn deliberately: points with strong traditional associations with childbirth were always handled with corresponding care, and the record keeps even the famous application inside professional oversight. Home self-care honours the same instinct, conservatively. Pregnancy is the season for asking before adding: anyone pregnant — or trying to conceive — should treat this page as background reading and clear any new practice with a qualified practitioner or the maternity team before beginning.
Beyond that headline rule, the practical boundaries are short. Gentle, purely surface fingertip contact only: pads, never tips, tools, or devices. Skip the point entirely when the skin around the little toenail is broken, cracked, ingrown, or infected — nail corners collect small troubles, and small troubles deserve rest, not pressure. Pause the practice during feverish illness or any acute flare that leaves you unwell. Sharp, electric, or radiating sensation means stop at once and do not try again that day. Readers living with diabetes, neuropathy, poor circulation, or injury in the feet should consult a qualified practitioner before adding any foot practice, because minor skin problems matter more in those circumstances, not less. Professional techniques belong to trained hands in clinical settings; home acupressure stays on the surface, and that distinction is the whole safety story.
And the wider rule stands over everything: this page is educational, and acupressure is self-care, not diagnosis or therapy. Seek prompt medical attention — not a pressure routine — for headaches that change character or worsen steadily, disturbances of vision, symptoms following injury, difficulty passing urine, and every question of pregnancy and labour. Persistent symptoms belong with a licensed practitioner, medical or East Asian medical as suits the complaint. A hidden corner of the smallest toenail offers most people a modest, kindly gift: a few minutes of attention paid to the farthest reach of the body, treated lightly and treated safely.
At the outermost corner of the little toenail sits Zhiyin — Reaching Yin — the final station of the body’s longest channel. Classical practice reached for this tiny point in head complaints, and its most storied entries concern childbirth. This guide covers finding it by touch, the story in its name, gentle self-acupressure, and the safety boundaries the point asks for.
Cautions from the classical sources
- Not needled in routine pregnancy care; its one classical exception is turning a malpositioned fetus under supervision.
Self-care limits
Frequently asked
- How do I find Zhiyin without knowing anything about cun?
- Use the toenail as the whole map. Sit down, let the toes face you, and look at the littlest toenail. Find the corner farthest from the fourth toe, then rest a fingertip in the soft notch just beside it, between the nail margin and the skin fold at the top of the toe’s last segment. A light touch usually meets a distinctly tender spot there. The dataset’s 0.1 cun simply encodes that same sliver of skin in proportional language — the width of the nail margin itself.
- Why does the bladder channel end here, and what happens after?
- Classical maps draw the bladder channel starting at the inner corner of the eye, sweeping over the crown, descending the whole back and the backs of the legs, and running out along the outer border of the foot to finish at the little toe — the longest course of any channel. Classical teaching then passes the story onward: the partner Kidney channel, a yin channel, is drawn beginning beneath the little toe and crossing toward the sole. This corner is therefore both full stop and comma — the end of one journey and the threshold of the next.
- What did classical practice use Zhiyin for?
- The traditional record lists headache, eye pain, nasal congestion, nosebleed, urinary retention, and the two childbirth entries — malposition of the fetus and prolonged labour — that made the point famous. The head-end complaints follow the channel’s eye-to-toe corridor; the childbirth entries carried the point’s reputation and remain, today, strictly supervised professional territory. All of it is documented as tradition and history, not as evidence-backed treatment claims.
- I am pregnant and my baby is lying breech — should I try this point myself?
- No. The famous association belongs to trained practitioners working under supervision, and the dataset itself keeps the exception inside professional oversight. Self-applied pressure, warmth, or any other stimulation at this point is not appropriate during pregnancy without explicit guidance from a qualified practitioner. Instead, raise the topic with your midwife, obstetrician, or an East Asian medicine practitioner who works alongside your maternity team; they can advise whether any traditional approach suits your circumstances. Everything else on this page likewise assumes the reader is not pregnant unless a qualified practitioner has advised otherwise.
- Is pressing Zhiyin safe, and when should I skip it?
- Light fingertip pressure held at the surface is generally reasonable self-care for healthy adults. Skip it when the skin beside the little toenail is broken, cracked, ingrown, or infected; during feverish illness; and whenever anything feels sharp or electric — that means stop for the day. If you live with diabetes, neuropathy, circulation problems, or injury in the feet, ask a qualified practitioner first, and the same applies in pregnancy without exception. Persistent headache, vision changes, urinary difficulty, or any symptom that worries you belongs with a licensed clinician, never with a pressure routine.
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 jing-well theory.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for BL67 Zhiyin — 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/bl67/leaf.json
- GET /zh-hant/points/bl67/leaf.json
- GET /zh-cn/points/bl67/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "BL67",
"name": {
"en": "Zhiyin",
"gloss": "Reaching Yin",
"zh-Hant": "至陰",
"zh-Hans": "至阴"
},
"channel": {
"id": "BL",
"order": 67,
"of": 67
},
"location": {
"text": "On the little toe, just beside the outer corner of the toenail."
},
"for": [
"headache",
"eye pain",
"a blocked nose"
],
"press": {
"text": "Press the toe corner between thumb and finger, about a minute each foot.",
"seconds": 60,
"sides": "both"
},
"cautions": [
"Not in pregnancy unless a qualified practitioner directs it."
],
"source": "Zhenjiu Jiayi Jing, book 3",
"url": "https://acupoints.com/en/points/bl67",
"lastReviewed": "2026-08-24"
}