LU5 Chize means 'Cubit Marsh'

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

LU5 (Chize, “Chize means 'Cubit Marsh'”) is the He-Sea Point point of the Lung Channel of Hand Taiyin Meridian. It is located on the transverse cubital crease of the elbow, in the depression just to the radial side of the biceps brachii tendon. This point is found with the elbow slightly flexed. It clears Lung heat, descends rebellious Lung Qi, regulates the water passages, relaxes the sinews and alleviates pain.

Location

On the transverse cubital crease of the elbow, in the depression just to the radial side of the biceps brachii tendon. This point is found with the elbow slightly flexed.

Needling

Perpendicular insertion 0.5 to 1.0 cun. The brachial artery and median nerve are medial to the point, so care must be taken to avoid them. It is also common to prick this point to bleed for acute, excess heat conditions.

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TCM functions

Clears Lung heat, descends rebellious Lung Qi, regulates the water passages, relaxes the sinews and alleviates pain..

Indications

Cough, rebellious Qi, shortness of breath, asthma, dry tongue, vexation, heart pain, fullness in the chest, shoulder and back pain, cold in the shoulder and back, wind-damp impediment (bi), elbow contraction, arm pain making it difficult to raise, vomiting, diarrhea, cholera with vomiting and diarrhea, sudden turmoil disorder, abdominal swelling, frequent urination and yawning, changes in urine color, sudden incontinence, infantile convulsions (slow), epilepsy, sadness and desire to cry, heat in the palms, spitting up turbid fluids, throat impediment, mouth and tongue dryness, tidal fevers, wind stroke, arm coldness, pain in the costal region, muscle spasms, pain in the lumbar spine and back, inability to lift the arm to the head..

He-Sea PointWater Point

Clinical notes

As the He-Sea and Water point of the Lung channel, Chize is a primary point for clearing all forms of heat from the Lungs and descending rebellious Lung Qi. It is classically indicated for acute conditions like cough, asthma, and spitting blood, as well as for resolving phlegm-heat. Its ability to regulate the water passages makes it useful for edema and urinary issues, while its location on the arm addresses local pain, contraction, and inability to raise the arm.

On the Lung Channel of Hand Taiyin channel

LU5 is one of 11 points on the Lung Channel of Hand Taiyin Meridian. Nearby points:

Frequently asked questions

Where is LU5 located?

LU5 (Chize) is located on the transverse cubital crease of the elbow, in the depression just to the radial side of the biceps brachii tendon. This point is found with the elbow slightly flexed.

What is LU5 used for?

LU5 clears Lung heat, descends rebellious Lung Qi, regulates the water passages, relaxes the sinews and alleviates pain. Common clinical indications include cough, rebellious Qi, shortness of breath, asthma, dry tongue, vexation, heart pain, fullness in the chest, shoulder and back pain, cold in the shoulder and back, wind-damp impediment (bi), elbow contraction, arm pain making it difficult to raise, vomiting, diarrhea, cholera with vomiting and diarrhea, sudden turmoil disorder, abdominal swelling, frequent urination and yawning, changes in urine color, sudden incontinence, infantile convulsions (slow), epilepsy, sadness and desire to cry, heat in the palms, spitting up turbid fluids, throat impediment, mouth and tongue dryness, tidal fevers, wind stroke, arm coldness, pain in the costal region, muscle spasms, pain in the lumbar spine and back, inability to lift the arm to the head.

How is LU5 needled?

Perpendicular insertion 0.5 to 1.0 cun. The brachial artery and median nerve are medial to the point, so care must be taken to avoid them. It is also common to prick this point to bleed for acute, excess heat conditions. Caution: The Suwen warns that needling too deeply into the depression of the elbow can cause the Qi to collect there, resulting in an inability to flex and extend the arm. The brachial artery lies just medial to this point.

Which meridian is LU5 on?

LU5 is a point on the Lung Channel of Hand Taiyin Meridian (Shǒu Tàiyīn Fèijīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.