Zhongfu

What is LU1?

LU1 (Zhongfu) is the first point of the Lung channel, sitting in the hollow just below the outer end of the collarbone.

Its name is usually translated as "Central Treasury". In classical Chinese medicine it is described as the point where the energy of the Lung channel gathers at the surface, and it is one of the points every acupuncture curriculum teaches. Older texts link it to coughing, wheezing, a tight or full chest, and shoulder discomfort on the same side.

That long history tells you the point is well established in tradition. It does not tell you the point works, and it does not tell you the point is safe for your body today. Those are separate questions, and this page keeps them separate.

The honest verdict on the evidence: there is essentially no good human research on pressing LU1 with a finger. LU1 does turn up inside larger acupuncture prescriptions tested for long-term lung conditions, but those studies cannot tell you what one point under your own thumb does. Treat LU1 as a traditional comfort measure for chest tightness and upper-chest tension, not as a treatment for any lung disease.

LU1 also sits over a busy piece of anatomy. Just beneath that hollow lie the top of the lung, the big vessels and nerves running to the arm, and in many people an implanted device or surgical scar. Nothing here involves breaking the skin: this library covers self-applied finger pressure only, and firm, careful, light pressure is all that is ever needed on the upper chest.

If you came here from a video promising that LU1 clears asthma or "opens the lungs", the claim is overstated. Breathing problems need a diagnosis. LU1 can sit alongside proper care, never in place of it.

Where is LU1 and how do you find it?

LU1 sits in the soft hollow just below the outer end of the collarbone, near the front of the shoulder.

• Start at the collarbone. Run a finger along your collarbone from the centre of your chest outward, toward the point of your shoulder.
• Stop near the outer end. Just before the collarbone meets the shoulder joint, drop your finger below the bone. You should feel a dip between the bone above and the chest muscle below.
• Find the groove. Lift your arm forward a little. A soft groove appears between the large chest muscle and the front of the shoulder muscle. LU1 lies just below the collarbone, towards the inner edge of that groove.
• Drop one rib space. From the dip directly under the collarbone, move down about one finger-width, roughly 2 cm, into the space between the first and second ribs. That is the classical position of LU1.
• Check the width. In traditional measurement LU1 sits about 6 cun out from the midline of the chest. For most people that is roughly a hand's width and a bit from the breastbone, at the level described above.

You are aiming for a tender hollow, not a hard ridge. If your finger is on bone, you are on the collarbone or a rib and need to move slightly. If you are up in the deep hollow above the collarbone, you have gone too high; that is a different point and a much riskier place to press.

Many people find LU1 noticeably sore, especially after long hours hunched at a desk. Mild tenderness is normal. Sharp pain, or tingling running down the arm, means you are pressing on a nerve or vessel and should stop and shift your finger.

Both sides of the chest have an LU1, and most traditions treat them as a pair.

How do you apply pressure to LU1?

1. Sit upright and relax. Let your shoulder drop. Use the opposite hand so the arm on the side you are working stays loose.
2. Use a finger pad. Place the pad of your index or middle finger in the hollow you located below the outer collarbone. Flat pad, not fingernail, not knuckle.
3. Press lightly inward. Press back toward the chest wall with gentle, even pressure. Aim for about 3 out of 10 on a discomfort scale: noticeable, never sharp. The upper chest needs less force than a shoulder or a foot.
4. Hold or circle. Hold steady for 30 to 60 seconds, or make small slow circles without sliding your finger across the skin.
5. Breathe slowly. Take easy breaths in through the nose and longer breaths out. Much of the reported relief comes from slower breathing and released chest tension.
6. Repeat and swap sides. Do two or three rounds per side, then do the other side. Two or three sessions a day is plenty.
7. Finish gently. Release slowly rather than snapping your hand away, then roll the shoulders a few times.

Stop immediately if you feel sharp pain, numbness, pins and needles down the arm, lightheadedness, or any increase in breathlessness. Those are signs to take your hand off the chest, not to press harder.

Keep pressure light if the skin is thin, bruised, or over an old scar. Never grind the finger into the collarbone itself, and never ask someone to lean their body weight onto your chest.

This is finger pressure only. Nothing on this page involves needles, heat, suction cups or anything that breaks or marks the skin, and none of that should be attempted at home.

What is LU1 traditionally used for?

• Cough and wheeze. Classical texts list LU1 for coughing, wheezing and a sense of fullness in the chest. Human evidence for finger pressure on LU1 for these symptoms is essentially absent, so treat it as tradition, not treatment. Asthma and COPD (long-term lung disease) need medical management.
• Chest tightness. The point is used for a tight, blocked or heavy feeling across the upper chest. Some people report the area loosens after gentle pressure, but no controlled trial has tested that. Slower breathing during the hold may explain much of it.
• Upper-chest and front-shoulder tension. LU1 sits right where the chest muscle meets the shoulder, an area that stiffens with desk work and rounded posture. Pressing a tender muscle attachment can feel better in the moment. This is a plausible local effect, not evidence of a channel effect.
• Shoulder and upper-arm ache. Tradition pairs LU1 with pain in the front of the shoulder running into the arm. Evidence here is weak and indirect; acupressure trials for shoulder pain generally use other points.
• Shortness of breath with anxiety. Some modern practitioners use LU1 when breathing feels shallow and anxious. Acupressure research on anxiety is small, short-term and usually unblinded, and none of it isolates LU1.
• Part of larger point prescriptions. In acupuncture practice, LU1 is often one of several points chosen for lung complaints. Published trials of such combinations were carried out by practitioners using needles, and they cannot tell you what a finger on one point achieves.

Across all of these, the honest summary is the same: the traditional record is rich, the human research is thin, and any benefit you notice is most likely mild, short-lived and partly down to relaxation. That is still worth something, as long as nobody sells it as a cure.

Are there tips for using LU1 effectively?

• Find the hollow first. Spend a few seconds locating the dip below the outer collarbone before you press. Pressing bone does nothing and makes the area sore.
• Less force than you think. The chest is not the calf. Light to moderate pressure on LU1 gives the same feeling of release without bruising the thin tissue over the ribs.
• Pair it with the breath. Press on a slow out-breath and ease off slightly on the in-breath. The rhythm does more for chest tightness than extra force.
• Open the chest afterwards. Follow with a gentle doorway chest stretch or a few shoulder rolls. If the tightness is postural, movement holds the change better than pressure alone.
• Work both sides. Tradition treats LU1 as a pair, and desk posture tightens both sides. Give each the same time.
• Keep sessions short. Thirty to sixty seconds, two or three rounds. Long grinding holds on the upper chest tend to leave tenderness the next day.
• Track honestly. Note how tight your chest felt before and after, on a scale of ten. If nothing changes after a couple of weeks, the point is not doing anything for you and that is useful to know.
• Mind what is under the skin. If you have a pacemaker, a chest port, a healing scar or a tender lump anywhere near the collarbone, leave the area alone and ask your doctor before touching it.
• Use it alongside, not instead. If you take an inhaler or any prescribed treatment for breathing, keep taking it exactly as directed. LU1 is a comfort measure sitting beside real care.

Warm hands help. Cold fingers on the chest make people tense the very muscles you are trying to settle, so rub your palms together first.

What do people get wrong with LU1?

• Expecting a cure. The biggest error is believing LU1 can fix asthma, chronic bronchitis or COPD. It cannot, and no honest source claims it can. Diagnosed lung conditions need medical care.
• Pressing above the collarbone. The deep hollow above the bone is a different point over major vessels and nerves. LU1 sits below the collarbone. Going high is the most common and the riskiest slip.
• Landing on bone. Grinding the finger into the collarbone or a rib causes bruising and no benefit. Find the soft dip instead.
• Too much force. People use shoulder-rub pressure on a thin, tender chest wall. Hard pressure here leaves soreness and, in people on blood thinners, visible bruises.
• Ignoring nerve signals. Tingling, buzzing or numbness running into the arm means move the finger, not press harder.
• Using it during a real emergency. Pressing LU1 while having crushing chest pain, sudden severe breathlessness, or coughing blood wastes time that belongs to emergency services.
• Stopping prescribed medicine. Some people cut back on an inhaler because the point "feels like it helps". That is dangerous. Never change medication without your prescriber.
• Pressing over hardware or scars. Pacemakers, defibrillators and chest ports usually sit just below the collarbone, exactly where LU1 is. So do surgical scars after chest or breast surgery. These areas are off limits.
• Confusing tradition with proof. LU1 being famous in classical texts says nothing about whether finger pressure changes your breathing.

One more: assuming tenderness means something is wrong inside. The area is often sore simply from posture. Persistent, unexplained chest tenderness, though, deserves a doctor's opinion rather than more pressing.

What does the research on LU1 actually say?

There is no controlled human trial testing self-applied finger pressure on LU1 for any condition. That is the plain answer, and it applies to cough, asthma, chest tightness and shoulder pain alike.

LU1 does appear in the acupuncture literature, but only as one point inside larger prescriptions. Trials of acupuncture for COPD (long-term lung disease) and for asthma have included LU1 among several chest and back points chosen by practitioners. Those studies delivered treatment in a clinic setting with needles, so they tell us nothing about what happens when a reader presses the same spot with a fingertip. Their results have also been mixed, with small numbers of participants, weak blinding, and improvements that often fade once treatment stops.

Even where such a study reports benefit, the design makes it impossible to credit LU1 specifically. When six or eight points are used together, no one can say which, if any, did the work.

The wider acupressure evidence base follows the same pattern. Most trials are small, short, and unblinded, which means expectation and attention alone can produce the reported improvement. The clearest exception anywhere in this field is PC6 for nausea, where repeated controlled trials do support a real effect. LU1 has nothing comparable behind it.

What this means for you is simple. If pressing LU1 feels pleasant and your chest feels looser afterwards, that is a reasonable thing to keep doing. Do not read it as proof that your lungs have changed, and do not let it delay a diagnosis. Breathlessness, a cough lasting more than three weeks, blood in sputum or chest pain all need a clinician, not a pressure point.

If better research appears, this page will say so. For now, the honest grade is insufficient evidence in humans, against a very strong traditional standing.