In pregnancy, ask a practitioner before pressing.
地機 Diji
“Pivot of the Earth” · SP8
Foot Taiyin · 8 of 21 · xi-cleft
Where. On the inner shin, four finger-widths below Yinlingquan (SP9), just behind the edge of the shinbone.
For. Period pain, irregular periods, loose stools.
Press. Two finger pads, slow circles, one minute each leg.
Caution. In pregnancy, ask a practitioner before pressing.
在膝下五寸按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Diji Sits on the Inner Calf
The dataset locates SP8 on the medial aspect of the lower leg — the inner face — on the straight line connecting the tip of the medial malleolus with Yīnlíngquán (SP9), three cun below Yīnlíngquán, posterior to the medial border of the tibia. Unpacked landmark by landmark: the medial malleolus is the prominent bone on the inner side of the ankle, and its tip is the lowest point of that prominence. Yīnlíngquán sits at the other end of the journey, just below the inner knee — the catalogue places it in the depression behind and below the medial condyle of the tibia, the rounded knob at the top-inner corner of the shinbone. From that knee-end hollow, three cun measures straight down the line toward the ankle. A cun is the proportional body-measure of Chinese point-location, taken from the person being examined rather than from a ruler; the familiar thumb-width convention makes one cun roughly the width of your own thumb, so three cun is a comfortable stack of three thumb-widths for most hands. Because the measure is proportional, absolute distances vary from body to body — the point lives in your coordinates, not in centimeters. One more direction completes the address: posterior to the medial border of the tibia means the point hides just behind the shinbone’s sharp inner ridge, on the soft strip of tissue facing the calf.
What lies under the fingertips is friendly terrain. Skin, then the lean muscle that hugs the back edge of the shinbone — the deep, slender muscles of the calf’s inner wall — and beneath them, bone. No body cavity waits anywhere nearby: the great vulnerable spaces of the chest and abdomen lie far from this quiet stretch of leg. Fittingly for a page built on gentle self-care, the licensed dataset records no specific caution for this point. That absence is worth stating plainly, and equally worth not overstating: it licenses light surface contact, never force, and every other boundary on this page still applies. One practical note follows from the geography itself: the tissue here sits close against the shin’s ridge, so searching fingers do better settling into the soft strip behind the bone than grinding on the bone itself.
Channel context explains why this stretch of calf carries such weight. Classical teaching draws the spleen channel ascending from the big toe, climbing the inner leg through ankle, calf, and knee, and continuing toward the chest — the registry’s own course summary reads the channel as rising from the big toe up the inner leg to the chest. The lower-leg stretch of that climb is unusually well signposted, because several named stations share one line: Sānyīnjiāo (SP6) stands three cun above the tip of the medial malleolus, Lòugǔ (SP7) six cun above it, Dìjī occupies the upper reach of the same route, and the line arrives at last at Yīnlíngquán beneath the knee. Every one of those addresses comes from the same licensed record. In the traditional frame this leg of the journey belongs to the spleen system’s stewardship of digestion, blood, and women’s health — themes that dominate the point’s recorded portfolio.
A Self-Palpation Walkthrough
Sit on a firm chair with the foot flat and the calf allowed to hang loose, or stretch the leg out supported at the heel — either way, let the lower-leg muscles soften first. Find the inner ankle bone and trace it down to its pointed tip. Then bring your attention to the inner side of the knee: slide down from the top-inner knob of the shinbone until your fingers sink into the soft hollow behind and below it — that hollow marks Yīnlíngquán. Now imagine a straight line drawn between the ankle-bone tip and that hollow, running up the inner face of the calf. From the hollow at the top, walk three stacked thumb-widths down the line toward the ankle, heel of one thumb meeting tip of the next. At the third width, let your fingertips slip off the shinbone’s sharp inner ridge onto the soft strip behind it. That strip, three thumb-widths below the knee-end hollow on the inner calf, is the location the dataset describes.
Two confirmations help before any pressing begins. First, compare sides: locate the mirror-image spot on the other leg and touch both feather-light; most people notice a faint, dull awareness at the true point and little sensation a thumb-width away. Second, enlist the muscle: with fingertips resting lightly in the soft strip, curl the toes or press the ball of the foot gently toward the floor — many people feel the strip tighten faintly under their fingers, confirming they are on muscle rather than directly on bone. The position checks itself besides: the spot should sit clearly closer to the knee than to the ankle, well below the knee’s bulge yet nowhere near the ankle bone. If your fingertip is sitting square on the bony ridge and complaining loudly, slide backward off the ridge into the softer tissue behind it.
The classic errors are few and easy to correct. One is pressing on the ridge itself instead of behind it — the bone’s edge is genuinely tender, and mistaking that soreness for a found point is common. Another is losing the line: the measurement runs along the straight join between ankle-bone tip and knee-end hollow, hugging the shinbone’s inner face; wandering toward the front of the shin or deep into the belly of the calf leaves the recorded address. A third error is counting from the wrong end — if your spot feels closer to the ankle than the knee, you may have drifted down toward the neighbourhood of Lòugǔ. When in doubt, return to the hollow below the inner knee, breathe out, and measure down three slow thumb-widths once more.
Reading the Name: Pivot of the Earth
The two characters carry the whole image. Dì 地 means earth — soil, ground, the solid land itself, and by extension everything low and downward-facing. Jī 機 pictures a mechanism: in its earliest recorded usage the character referred to the trigger of a crossbow, the small clever piece whose release moves the whole engine, and from there it stretched to mean any pivot, hinge, or critical juncture where forces gather and turn. Together, Dìjī reads as the Pivot of the Earth — the crank on which the earthly territory turns. Point names in this tradition map the body onto landscape, and the mapping is consistent: the lower limbs, bearing the body’s weight, belong to the territory of earth, and within that territory certain spots were marked as pivots — places where movement, flow, or trouble was thought to hinge.
Why this spot and not another? Two traditional readings survive in the general commentary, and they cooperate rather than compete. Some classical writers connected the mechanism to the knee just above — the body’s largest working hinge, whose leverage turns literally overhead. Others read the name through the point’s official class: tradition assigns each channel a single xi-cleft point — precisely the category the dataset records for SP8 — described as the station where a channel’s qi gathers and sinks deepest, and Dìjī holds that office for the spleen channel. A gathering-place where the channel’s force pools and plunges is exactly the kind of station a tradition might call a pivot. Classical practice accordingly reached for cleft points when problems arrived suddenly and sharply, reserving the deep-collecting stations for acute moments. These are traditional frameworks for understanding the body — offered for orientation, not asserted as physiology.
Pinyin renders the name Dìjī: dì carries the falling fourth tone, a firm drop from high to low, while jī holds the first tone, level and sustained like a note held steady. The hanzi pair 地機 is compact enough to memorise at a glance. Like the gates, wells, valleys, and seas scattered through the point canon, the machine metaphor does real work here: a pivot is where effort turns to outcome, and naming a spot a pivot tells you the tradition ranked it as consequential — not scenery along the route, but the joint on which the route swings. Names, in this canon, are compressed instructions for attention.
Traditional Indications, Explained
The recorded indications number seven: dysmenorrhea, uterine bleeding, irregular menstruation, abdominal pain, diarrhoea, difficult urination, and edema. Grouped, they tell a coherent story. Three concern women’s cycles: periods that arrive painfully, bleeding that runs beyond its proper course, and rhythms that lose their regularity. Two concern digestion: abdominal pain and diarrhoea. Two concern water: urine that will not flow freely, and edema — swelling where fluid gathers in tissue. One point carrying this spread looks scattered until the channel beneath it is remembered: the registry’s own summary reads the spleen meridian as governing digestion, blood, and women’s health, and the water-themed entries fit the same system’s traditional charge of transforming and transporting fluids.
The traditional reasoning ran roughly as follows, reconstructed from the general logic of the literature rather than any single citation. For the menstrual cluster: the spleen system was said to govern blood — keeping it moving within its pathways — and the channel’s course ties the inner leg to the body’s central systems, so cycle disturbances were traditionally approached along this pathway, with Dìjī prominent among the stations discussed. For the digestive pair: a system charged with transformation and transportation was the natural address for belly pain and loose stool in the classical frame. For the water pair: fluid that failed to transform was read as dampness accumulating, and the point’s record of difficult urination and edema answers to that picture. And the point’s xi-cleft class explains the flavour of the list: acute, sharp presentations — gripping cramps, abrupt bleeding — stand at its head, matching the traditional habit of reaching for cleft stations when trouble arrived suddenly. Each step is traditional inference, documented for understanding.
Honesty requires drawing bright lines around several of these entries. Heavy or prolonged uterine bleeding, cycle pain that stops ordinary life or worsens month over month, and cycles that change without explanation all deserve professional assessment promptly — they are diagnoses to pursue, not discomforts to press away. Edema and difficult urination can reflect heart, kidney, or other conditions needing genuine investigation; persistent abdominal pain and diarrhoea belong with a clinician as well. The record preserves these entries because they map how classical practice thought, not because self-applied pressure addresses them. Where modern research touches self-applied acupressure at all, reviews suggest effects are modest and context-dependent, and evidence specific to any single point remains thin. Hold the tradition as history and craft; hold the medical boundary as firm.
Self-Care Acupressure at Home
With the point located by the walkthrough above, settle in: seated, spine tall but unforced, the lower leg supported and released. Curl your index and middle fingers together and rest the pads — not the tips — on the soft strip behind the shin’s inner ridge. Begin with contact alone for a few slow breaths, then add small circles, letting the skin glide over the muscle beneath rather than grinding against the bone’s edge. Pressure should register as pleasant dullness or mild warmth, never sharpness. A common home rhythm is one to three minutes per side, once or twice daily, timed where possible to slow exhales so each circle rides the breath out. Swap hands, find the mirror spot, and give the other leg the same unhurried attention. On days when cycles run hard, let sessions grow shorter and lighter, never longer and harder.
Quality outranks duration. Light, patient, regularly repeated contact fits the wellness register this page practises; hard jabbing teaches the body nothing and risks bruising tissue that sits close to bone. Warm your hands first on cold days, because chilled muscle guards itself. Choose a quiet corner over a screen, and consider anchoring the practice to something you already do daily — after washing up in the morning, or during the evening wind-down — because in self-care traditions consistency, not intensity, is the virtue that compounds. A couple of unhurried minutes most days beats a marathon session once a fortnight, and the ritual itself is half of what the practice offers.
Treat the exercise as a few minutes of attending to yourself rather than a treatment session. Across a few weeks you may notice the area feeling less guarded, the legs feeling easier by evening, or simply that you showed up for yourself each day. Every one of those outcomes sits inside the honest scope of self-acupressure. What sits outside it is escalation — pressing harder, longer, or deeper to force a result, especially in tender phases of a cycle. When curiosity pulls that way, return to gentleness, shorten the session, or rest the practice for a day or two. The point will still be there tomorrow; your goodwill toward your own body is the thing worth protecting.
Cautions and Safe Practice
Begin with what the record says, because it is genuinely useful: the licensed dataset records no specific caution for SP8. Nothing in this entry’s source material warns of danger at this site, and the geography supports the calm reading — the point lies over muscle and bone on the inner calf, far from the chest wall, the abdominal organs, and every structure that makes some other points unforgiving. But absence of a recorded caution is not an invitation to force. Every rule that governs gentle self-care everywhere applies here in full: this is surface work, done with finger pads, on healthy skin, by someone simply tending their own body.
The universal boundaries, spelled out. Stop at once on sharp, electric, or radiating sensation, and do not resume that day. Skip the point over broken, irritated, or infected skin. Pause the practice during feverish illness, and be cautious for a stretch after any calf or shin injury, or surgery on the leg, until ordinary movement is comfortable again. Pregnant readers should consult a qualified practitioner before adding any new point practice — and along this particular line of the channel, prudence doubles: the registry records a clear pregnancy-related caution for the neighbouring Sānyīnjiāo (SP6), so anyone who is or may be pregnant does best to seek individual guidance rather than improvise along the route. Anyone living with a diagnosed bleeding disorder, or taking prescribed medication with blood-thinning effects, does better to ask their clinician before regular deep-tissue pressure of any kind — a general caution about pressure practices, not a special property of this point.
And the wider rule stands over everything: this page is educational, and acupressure is self-care, never diagnosis or therapy. Seek prompt medical care — not a pressure routine — for period pain that stops you living normally or worsens month over month; bleeding that is unusually heavy or prolonged; bleeding between periods or after menopause; new swelling in a leg, especially one-sided or accompanied by breathlessness or chest symptoms; urine that will not flow; abdominal pain or diarrhoea that persists or keeps returning; or any symptom that frightens you. Persistent complaints belong with a licensed practitioner. The Pivot of the Earth offers most people a quieter gift than miracles: a few honest minutes of care for the legs that carry them — attended kindly, and safely.
Dìjī — the Pivot of the Earth — rests on the soft inner face of the lower leg, three cun below Yīnlíngquán on the line that joins the inner ankle bone to the underside of the knee. Classical practice reached for it when cycles pained, bleeding ran astray, or the belly and its waters fell out of rhythm. This guide walks you through finding it by touch and pressing it gently.
Self-care limits
Frequently asked
- How do I find Diji without knowing anything about cun?
- Use the inner knee and the inner ankle bone as the whole map. Slide your fingers down from the top-inner knob of the shinbone into the soft hollow behind and below it — that hollow is Yīnlíngquán. From there, walk three stacked thumb-widths down the straight line toward the inner ankle bone, then slip your fingertips off the shinbone’s ridge onto the soft strip behind it. That knee-hollow-plus-three-thumb-spans recipe reproduces the recorded three-cun measurement without any ruler.
- Is pressing Diji myself actually safe?
- Gentle fingertip pressure held on the surface is reasonable self-care for healthy adults, and the licensed dataset records no specific caution for this point — it sits over muscle and bone on the inner calf, far from the vulnerable cavities that make chest and neck points demanding. Reasonable is not unconditional, though: keep pressure light and off the bony ridge itself, stop on sharp sensation, avoid broken skin, and pause during fever or after a fresh leg injury.
- What did classical practice use Diji for?
- The traditional record lists dysmenorrhea, uterine bleeding, irregular menstruation, abdominal pain, diarrhoea, difficult urination, and edema. Tradition classes the point as the spleen channel’s xi-cleft — the station where channel qi gathers deepest — which is why acute, sharp presentations such as gripping cramps and sudden bleeding stand at the head of its historic portfolio. Those are traditional frameworks, preserved for context and cultural understanding, not evidence-backed treatment claims.
- Why would a calf point carry a name about mechanisms and pivots?
- Because the name encodes how the tradition ranked the spot. The lower limbs belong to the territory of earth in the body-as-landscape mapping, and a ji — a pivot or trigger-mechanism — marks where the tradition expected forces to gather and turn. Add the xi-cleft classification, which describes a collecting-station for channel qi, and the two images agree: this is a junction, not a way-station. Names in this canon are compressed instructions for where to attend.
- Can acupressure at Diji replace seeing a doctor about my cycle?
- No. Self-acupressure is a comfort practice, not a diagnostic tool, and cycle changes deserve real answers: severe or worsening pain, unusually heavy or prolonged bleeding, bleeding between periods, or cycles that change without explanation all merit professional assessment promptly. Think of the two as different floors of the same building: daily self-soothing lives downstairs, clinical medicine keeps the consulting room upstairs, and neither substitutes for the other.
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, xi-cleft theory, and channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for SP8 Diji — location, xi-cleft 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/sp8/leaf.json
- GET /zh-hant/points/sp8/leaf.json
- GET /zh-cn/points/sp8/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "SP8",
"name": {
"en": "Diji",
"gloss": "Pivot of the Earth",
"zh-Hant": "地機",
"zh-Hans": "地机"
},
"channel": {
"id": "SP",
"order": 8,
"of": 21
},
"location": {
"text": "On the inner shin, four finger-widths below Yinlingquan (SP9), just behind the edge of the shinbone."
},
"for": [
"period pain",
"irregular periods",
"loose stools"
],
"press": {
"text": "Two finger pads, slow circles, one minute each leg.",
"seconds": 60,
"sides": "both"
},
"cautions": [
"In pregnancy, ask a practitioner before pressing."
],
"source": "Zhenjiu Jiayi Jing, book 3",
"url": "https://acupoints.com/en/points/sp8",
"lastReviewed": "2026-08-24"
}