Yangchi

What is TE4?

TE4 (Yangchi) is an acupressure point in the hollow at the centre of the crease on the back of the wrist.

Its Pinyin name, Yangchi, is usually translated as yang pool. In Chinese medicine it is the yuan-source point of the Triple Energizer channel, a channel linked in that system to warmth and the movement of fluids. It appears in the classical texts and in every modern acupuncture curriculum, so its traditional standing is as high as a point gets.

Traditional standing is not evidence that a point does anything, and it is not evidence that pressing it is safe for you. Those are two separate questions, and this page answers them separately.

The honest verdict on evidence: there is essentially no human research on TE4 on its own. Where it appears in studies, it is one of several points used together for wrist or hand complaints, so nothing can be traced back to TE4 itself. Acupressure research as a whole is small, short and rarely blinded.

Most people arrive here after a video about wrist pain, keyboard strain, or blood sugar. Gentle thumb pressure on a stiff wrist is low risk and can feel pleasant. The blood-sugar claims attached to this point are not supported by human trials, and nobody should change diabetes treatment because of them.

Everything described on this page is self-applied finger pressure. There are no needles, no heat applied to the skin, and nothing that breaks the skin. Treat TE4 as a comfort measure you can try alongside proper care for your wrist, not as a treatment in its own right.

Where is TE4 and how do you find it?

TE4 sits in the dip at the middle of the crease on the back of your wrist, roughly in line with your ring finger.

• Start palm down. Rest your forearm on a table with the back of the hand facing up and the wrist relaxed and straight.
• Find the wrist crease. Bend your hand downward a little and look for the main fold where the hand meets the forearm. That fold is your reference line.
• Line up with the ring finger. Trace back from the knuckle of your ring finger towards the wrist until you reach the crease.
• Make the tendons stand up. Straighten and spread your fingers hard for a second. You will see cords rise under the skin on the back of the hand and wrist.
• Drop into the groove. TE4 lies in the small gap between the tendon running to the little finger and the band of tendons running to the other fingers, right on the crease.
• Confirm by feel. Your fingertip should sink into a soft dip. If you feel hard bone or a tight cord, slide a few millimetres either side until you find the hollow.

Texts agree on this landmark: the point is on the transverse crease on the back of the wrist, in the depression beside the finger-extending tendons. It is shallow and close to the surface, which is all a self-pressure user needs to know.

One point is often confused with it. TE5 (Waiguan) is further up the forearm, about three finger-widths or roughly five centimetres above the wrist crease. If you are up the forearm rather than on the crease, you have left TE4.

How do you apply pressure to TE4?

1. Settle the arm. Rest your forearm palm down on a table or your thigh so the wrist is supported and the hand is loose.
2. Use the opposite thumb. Place the flat pad of your thumb, not the nail or tip, into the hollow on the wrist crease.
3. Sink slowly. Increase pressure over two or three seconds until you feel a dull ache or a spreading fullness. Aim for about three or four out of ten, never sharp.
4. Hold or circle. Keep steady pressure for 30 to 60 seconds, or make small slow circles without dragging the skin.
5. Breathe normally. Let the shoulder and forearm stay relaxed. Clenching the hand defeats the point.
6. Release gradually. Ease off over a couple of seconds, then gently circle the wrist a few times.
7. Repeat sensibly. Do both wrists, two or three times a day, for no more than a few minutes in total each session.

Stop straight away if you feel sharp pain, pins and needles, numbness shooting into the hand, or if the area swells or reddens. Discomfort that lingers after you let go means you pressed too hard.

Keep nails short and skip hard pressure tools here. The wrist is thinly covered, and a pointed gadget bruises easily where a thumb pad does not.

If you are pregnant, TE4 is not on the traditional lists of points avoided in pregnancy, but there is no need for heavy pressure anyway. Keep it light and ask your midwife if you are unsure. Give any self-pressure routine about a week of honest trial. If nothing has changed by then, it is not working for you.

What is TE4 traditionally used for?

• Wrist pain and stiffness. This is the main traditional use and the most plausible one, since TE4 sits directly on the painful area. No trial has tested pressure on TE4 alone, but gentle local pressure and movement can ease a stiff wrist short term.
• Hand and finger complaints. Classical sources list weakness, pain and poor movement of the wrist and fingers. Human evidence specific to this point is absent; wrist and hand problems have well-tested treatments worth using first.
• Thirst and wasting disorder. Old texts link the Triple Energizer source point to a pattern later associated with diabetes. There is no human evidence that pressing TE4 affects blood sugar, and this claim should not influence medication or diet decisions.
• Ear symptoms such as tinnitus. The Triple Energizer channel is described as reaching the ear, which is why TE4 appears in traditional ear formulas. Studies of acupuncture for tinnitus are mixed and never isolate this point.
• Headache and neck or shoulder tension. Tradition treats the channel as running up the arm to the head, so distant points are used for head symptoms. Evidence for acupressure on headache is small, unblinded and short term.
• Cold hands and low energy. Modern popular sources claim TE4 boosts circulation or regulates the thyroid gland. No human research supports either claim.

Across the board, the realistic expectation is temporary local comfort in the wrist and hand, and nothing more. Anything described as balancing metabolism or correcting an organ is tradition being retold as science.

Are there tips for using TE4 effectively?

• Find the hollow before you press. Spread your fingers to raise the tendons, then let them relax and drop into the gap. Pressing a tendon or the bony bump on the little-finger side is the usual reason TE4 feels like nothing.
• Warm the wrist first. A minute under warm water or a warm cloth makes the area more comfortable and the tendons easier to feel.
• Pair it with movement. Follow pressure with slow wrist circles, gentle bends and a soft fist. For stiffness, the movement is probably doing more work than the point.
• Keep sessions short and frequent. Thirty to sixty seconds, two or three times a day, beats one long grinding session that leaves the wrist sore.
• Do both wrists. If you type or use a phone a lot, the quieter wrist is usually loaded too.
• Fix the cause as well. Chair height, keyboard angle, mouse position and regular breaks matter more for keyboard wrist pain than any point.
• Keep a simple record. Note your wrist stiffness out of ten before and after, for a week. Honest tracking tells you fast whether it helps you.
• Use the thumb pad, not a tool. Skin here is thin, and hard gadgets bruise. Your thumb gives feedback a tool cannot.

One last practical tip: if pressing TE4 reproduces the exact pain you are trying to treat, that is a sign to stop and have the wrist assessed rather than to press harder.

What do people get wrong with TE4?

• Expecting a cure. The biggest error. Finger pressure on a wrist point does not cure diabetes, tinnitus, thyroid problems or arthritis, and claims that it does are not supported by human research.
• Pressing on bone or tendon. Landing on the knobbly head of the ulna, on the little-finger side, instead of the soft hollow on the crease. It hurts and misses the point entirely.
• Mistaking it for TE5. TE5 (Waiguan) sits about three finger-widths up the forearm. TE4 is on the wrist crease itself, not above it.
• Going too hard. Digging in with a nail or a pressure tool leaves a bruise on thin skin and irritates tendons that may already be sore.
• Pressing a fresh injury. Working on a wrist that was sprained, struck or fallen on yesterday can make swelling worse and may be hiding a fracture.
• Pressing a lump. A soft bump on the back of the wrist is often a ganglion cyst. It needs looking at, not squeezing.
• Ignoring numbness. Tingling, numbness or weakness in the hand points to a nerve problem that deserves a proper assessment, not more pressure.
• Using it instead of care. Delaying a doctor visit for a wrist that is getting worse, locking, or swelling is the most costly mistake on this list.
• Treating one session as a test. People press once, feel nothing, and declare it useless, or feel relief once and declare it proven. Neither conclusion holds.

What does the research on TE4 actually say?

No useful human research on TE4 by itself was found. There is no controlled trial testing finger pressure on Yangchi against a sham or no-treatment comparison for any condition.

Where TE4 turns up in the published literature, it is one name in a list. Acupuncture studies of wrist pain, carpal tunnel syndrome and diabetic nerve pain in the hands sometimes include points on the back of the wrist within a larger prescription, and those studies are needling studies, not acupressure studies. Even where such a trial reports a benefit, the design cannot tell you which point contributed what, and the result says nothing about what your thumb can do.

The wider picture matters here. Acupressure trials in general tend to be small, run for days or weeks rather than months, and are rarely blinded, because a person knows whether a point is being pressed. That design weakness inflates reported benefits. There is one clear exception in the literature: PC6 for nausea and vomiting has repeated controlled human trials behind it. TE4 has nothing of that kind.

So what should a reader take from this? Pressing TE4 is a low-risk thing to try on a stiff or achy wrist, and local pressure plus gentle movement may feel better for a while. That is a reasonable expectation. Claims that this point lowers blood sugar, restores hearing or regulates the thyroid gland are traditional reasoning rather than tested findings, and should be treated as unproven.

If better evidence appears, this page will say so. For now, absence of research is not proof the point is useless, but it is a reason not to rely on it for anything that matters.