PC2 Celestial Spring

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

PC2 (Tianquan, “Celestial Spring”) is an acupuncture point on the Pericardium Channel Meridian. It is located on the anterior aspect of the upper arm, between the two heads of the biceps brachii muscle, 2 cun inferior to the anterior axillary fold when the arm is raised. It unbinds the chest, regulates Heart Qi, calms the spirit, and activates the channel to alleviate pain.

Location

On the anterior aspect of the upper arm, between the two heads of the biceps brachii muscle, 2 cun inferior to the anterior axillary fold when the arm is raised.

Needling

Perpendicular insertion, 0.5 to 1 cun. Caution should be exercised to avoid the brachial artery and median nerve which lie medial to the point.

TCM functions

Unbinds the chest, regulates Heart Qi, calms the spirit, and activates the channel to alleviate pain..

Indications

Heart disease, fullness and distention in the chest and hypochondrium, rebellious cough, pain in the chest, back, scapula, and the inner aspect of the arm, aversion to wind and cold, dim vision, foot pain preventing walking, stone water (a type of severe edema)..

Clinical notes

Tianquan is a local point on the upper arm primarily used for conditions affecting the chest and the pathway of the Pericardium channel. Its indications for chest fullness, cough, and radiating arm pain make it useful for both cardiac and pulmonary issues, as well as for musculoskeletal pain along the medial arm. While not as commonly used as the distal points on the channel, it is effective for clearing stagnation and relieving pain in the chest and upper limb.

On the Pericardium Channel channel

PC2 is one of 9 points on the Pericardium Channel Meridian. Nearby points:

Frequently asked questions

Where is PC2 located?

PC2 (Tianquan) is located on the anterior aspect of the upper arm, between the two heads of the biceps brachii muscle, 2 cun inferior to the anterior axillary fold when the arm is raised.

What is PC2 used for?

PC2 unbinds the chest, regulates Heart Qi, calms the spirit, and activates the channel to alleviate pain. Common clinical indications include heart disease, fullness and distention in the chest and hypochondrium, rebellious cough, pain in the chest, back, scapula, and the inner aspect of the arm, aversion to wind and cold, dim vision, foot pain preventing walking, stone water (a type of severe edema).

How is PC2 needled?

Perpendicular insertion, 0.5 to 1 cun. Caution should be exercised to avoid the brachial artery and median nerve which lie medial to the point.

Which meridian is PC2 on?

PC2 is a point on the Pericardium Channel Meridian (Xīnbāo Jīng).

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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.