Yunmen

What is LU2?

LU2, or Yunmen (Cloud Gate), is a Lung-channel point in the hollow just below the outer end of the collarbone.

It is the second point on the Lung channel, sitting one thumb-width above LU1 (Zhongfu). Classical texts link it to the chest and the upper airway, and describe it as a place where Lung qi (the body's vital energy, in traditional theory) was thought to gather and disperse.

Traditionally it is used for cough, wheeze, a tight or full feeling in the chest, and pain across the front of the shoulder. Those are claims from tradition, not findings from trials.

The honest verdict on evidence: there is essentially no human research testing finger pressure on LU2 for anything. Acupressure research as a whole is mostly small, short-term and unblinded, which means people usually knew they were being treated. For LU2 specifically, there is not even that much.

Two things are worth saying once, clearly, and we will not repeat them in every section below. First, long traditional use is not evidence that a point works; a practice can be centuries old and still have no measurable effect. Second, traditional standing is not evidence that a point is safe. LU2 sits over a busy piece of anatomy — the large vessels and nerves that run from the neck into the arm pass beneath this hollow, and the top of the lung is not far below. That does not make gentle finger pressure dangerous for most people, but it does mean the "who should avoid it" list matters more here than it does for a point on the hand.

Everything on this page is self-applied finger pressure. Nothing here involves needles, heat, suction or anything that breaks the skin.

Treat LU2 as a comfort practice you may enjoy, not as a treatment for a breathing problem. If your breathing is the issue, the useful step is a medical assessment, not a stronger press.

Where is LU2 and how do you find it?

LU2 sits in the hollow just below the outer end of your collarbone, near the front of the shoulder.

• Start at the collarbone. Put the fingers of your opposite hand on the inner end of your collarbone, next to the base of your throat, and trace outwards along the bone toward the shoulder.
• Stop near the outer end. As you near the shoulder, the bone dips and you reach a soft dent beneath it. This dent is the infraclavicular fossa — the hollow under the collarbone.
• Find the hard knob. Just outside that hollow you can feel a firm bony bump at the front of the shoulder, called the coracoid process. LU2 lies in the soft hollow on the inner side of that bump, not on the bump itself.
• Check the width. Classical texts place LU2 about 6 cun (roughly six thumb-widths, or around 14 cm on an average adult) out from the midline of the breastbone, right under the collarbone.
• Confirm with the arm test. Lift your arm forward and the hollow deepens and softens. Lower it and the area firms up. That change tells you that you are in the hollow and not on bone.

Two anatomy notes save most mistakes. LU2 is above the first rib space; LU1 (Zhongfu) is one thumb-width lower, in the gap between the first and second ribs. If your finger has dropped onto rib and muscle below the collarbone, you have slid past LU2 toward LU1.

Also, LU2 is not on the top of the shoulder. If you are touching the flat shelf of bone at the very tip of the shoulder, you are far too lateral.

Feel for soft tissue that gives under light pressure. There is a point on each side of the body, and you can work the two in turn.

How do you apply pressure to LU2?

1. Sit and drop the shoulder. Sit upright with your back supported and let the shoulder you are working on relax downward. A hunched shoulder closes the hollow and makes the point hard to reach.
2. Cross your hand over. Reach across your chest with the opposite hand and rest your index and middle fingertips in the hollow below the outer collarbone.
3. Settle in slowly. Press inward and slightly upward toward the underside of the collarbone, building pressure over several seconds. Never jab or dig suddenly.
4. Keep it light here. Aim for a firm, pleasant pressure of roughly 3 or 4 out of 10. This point needs less force than a point on the hand or foot, because of what lies beneath it.
5. Hold or circle. Hold steady for 30 to 60 seconds, or make small slow circles without sliding the skin. Breathe out slowly as you press.
6. Release gradually. Ease off over a few seconds rather than lifting the finger sharply, then rest for about 30 seconds.
7. Repeat and swap. Two or three rounds per side is plenty. Most people use it once or twice a day; there is no benefit in grinding away for longer.

Stop immediately if you feel tingling, buzzing, numbness, or an electric sensation running into your arm or hand. That means you are pressing on nerve tissue, not on muscle, and you should lift your finger straight away.

Stop as well if you feel light-headed, if your pulse feels odd, if the area becomes sharply painful, or if pressing makes breathlessness worse rather than better.

Keep your nails short and do not press through a bra strap, zip or seam. Skin on the upper chest marks easily, so if you see bruising you were pressing far too hard.

What is LU2 traditionally used for?

• Cough and wheeze. The oldest and most common use. Classical texts describe LU2 as helping Lung qi descend, easing cough and noisy breathing. No controlled human trial has tested finger pressure on LU2 for cough, so this remains a traditional claim only.
• Chest tightness and fullness. Tradition treats the hollow under the collarbone as a place to release a stuffed, congested feeling in the upper chest. Some people find the pressure and slow breathing relaxing. Whether that comes from the point or from simply pausing and breathing out is not known.
• Front-of-shoulder and upper chest ache. The point sits over the pectoralis muscle near its attachment, so firm contact there can feel like ordinary massage of a tight area. Massage to tender chest and shoulder muscles has modest short-term evidence in general; nothing specific supports LU2 over any nearby spot.
• Asthma and breathlessness in traditional practice. Older texts list LU2 among points used for breathing difficulty. Human research on acupuncture for asthma is mixed and generally weak, and it does not isolate LU2. Acupressure should never replace an inhaler or prescribed treatment.
• Shoulder movement and posture work. Modern practitioners sometimes use LU2 alongside stretches for rounded shoulders. Any benefit here plausibly comes from the stretching and the postural change, not from the point itself.
• General relaxation. A minute of steady, gentle pressure with slow exhaling calms many people. That effect is real but non-specific — you would likely get it from several points, or from the breathing alone.

Across all of these, the pattern is the same: a long traditional record and almost no direct human testing. Small, unblinded studies of acupressure in general tend to show short-lived, modest changes in how people rate their symptoms, and those studies rarely rule out expectation effects.

If a symptom is new, worsening, or keeping you awake, the sensible step is a medical opinion rather than more time on the point.

Are there tips for using LU2 effectively?

• Open the hollow first. Roll your shoulder back and let the arm hang loose. A relaxed shoulder makes the dent under the collarbone easy to feel; a tensed one hides it.
• Use the pads, not the tips. Press with the flat pad of your index or middle finger. Fingertips and nails concentrate force into a small spot, which this part of the chest does not tolerate well.
• Let the breath set the rhythm. Press as you breathe out and ease off as you breathe in. Slow exhaling is calming in its own right and makes the session more comfortable.
• Work both sides. Do the left and the right in turn. It keeps the session balanced and stops you overworking one tender spot.
• Go lighter than you think. On most points, a deep ache is the target. Here, aim for firm but easy. If you feel anything sharp, buzzing or electric, you are in the wrong tissue.
• Warm the area first. A warm shower or a few shoulder rolls beforehand softens the chest muscle and makes the hollow easier to locate.
• Keep sessions short. One or two minutes per side is enough. Longer sessions do not add benefit and raise the chance of soreness or bruising.
• Track it honestly. If you are trying LU2 for a recurring symptom, note the symptom before and after for a couple of weeks. A simple record tells you more than a vague impression.
• Pair it with the real fix. For a tight chest from poor desk posture, use LU2 alongside standing up, stretching and adjusting your screen height. The posture change is doing most of the work.
• Know when to stop trying. If two weeks of regular use changes nothing, accept that and move on rather than pressing harder or longer.

What do people get wrong with LU2?

• Expecting a cure. The commonest error by far. LU2 is a self-care comfort practice; it will not resolve asthma, a chest infection or a chronic lung condition, and no honest source should suggest otherwise.
• Pressing on bone. Landing on the hard collarbone itself, rather than the soft hollow just below its outer end. Bone contact is uncomfortable and achieves nothing.
• Confusing LU2 with LU1. LU1 (Zhongfu) sits about one thumb-width lower, in the gap between the first and second ribs. If your finger is on ribs rather than in the hollow under the collarbone, you have drifted to LU1.
• Digging in hard. Large vessels and nerves travel beneath this hollow on their way into the arm. Heavy, probing pressure can cause tingling or numbness down the arm. Firm and gentle is the right setting.
• Ignoring the warning sensations. Buzzing, pins and needles, or an electric jolt into the arm means stop, not push through. These are nerve signals, not a sign the point is "working".
• Using it during an asthma attack. Reaching for a point instead of a reliever inhaler during sudden breathlessness is dangerous. Use your prescribed medicine and get help.
• Pressing over hardware. Pacemakers, defibrillators, chemotherapy ports and central lines are often placed exactly here, below the collarbone. People forget and press straight over the device.
• Working on a lump. Treating a swelling or enlarged gland under the collarbone as a "blockage" to massage out. Any new lump there needs a doctor's assessment, not pressure.
• Overdoing the duration. Several minutes of grinding pressure leaves the chest sore and sometimes bruised. Short sessions are more comfortable and no less useful.
• Trying to needle it at home. Nothing on this page describes needling, and attempting it over the upper chest risks serious lung injury. Finger pressure only.

What does the research on LU2 actually say?

We found no useful human research testing LU2 specifically, whether by finger pressure or by any other method. There is no trial we can point to that isolated this point and measured what it did.

That gap is real and worth naming. Most acupressure research concentrates on a handful of popular points — PC6 for nausea and vomiting, which has genuine controlled trials behind it, plus LI4, ST36 and a few others. Points like LU2 appear inside multi-point treatment protocols, if at all, so even where a study shows a result, you cannot tell which point contributed.

Broader research on acupuncture for breathing conditions is the nearest relevant body of work, and it is not encouraging. Trials in asthma and chronic obstructive pulmonary disease (long-term lung disease that narrows the airways) have been small, varied in method, and often unblinded, and reviews generally conclude the evidence is too weak to recommend acupuncture as a treatment. Those trials used needles, not finger pressure, and they did not test LU2 on its own.

A fair reading, then: nothing specific supports LU2, and the general picture for the conditions it is traditionally linked to is weak. Absence of evidence is not proof the point does nothing, but it does mean no one can honestly promise you an outcome.

What that means in practice is simple. If you find pressing LU2 relaxing, and your doctor has no objection, there is little harm in a minute of gentle pressure. If you are managing a diagnosed lung condition, keep taking what you have been prescribed and treat this as an extra, never a substitute.

We will update this page if good controlled human trials on LU2 appear. At present, none that we could verify exist.