P-07 (Da Ling) Great Mound

What does P-07 Da Ling do?

P-07 holds two classifications at once: it is the Yuan-Source point of the Pericardium channel AND its Shu-Stream and Earth point — and because the Pericardium is a yin FIRE channel, Earth is Fire’s child, which makes P-07 the SEDATION point. Source point and sedation point in one place is what gives it such a broad action list.

• Clears heat from the Heart and calms the spirit — the action it is best known for
• Harmonises the Stomach and intestines
• Unbinds the chest
• Clears the nutritive level and cools blood

Why Source and Shu-Stream coincide here. On yin channels the Yuan-Source point and the Shu-Stream point are the same point; on yang channels they are separate. Our BL-64 record sets out that rule with a worked example, and tested against all twelve Yuan-Source points in this library it holds twelve out of twelve: the six on yin channels — LU-09, HT-07, P-07, SP-03, KI-03 and LIV-03 — every one also carries the Shu-Stream classification; the six on yang channels — LI-04, SI-04, SJ-04, ST-42, BL-64 and GB-40 — carry the Yuan classification alone, with no five-shu element recorded. A rule that holds without exception across our own data is worth stating as one.

The Pericardium five-shu roles, derived from this site’s own element records: P-09 Zhong Chong is Wood, P-08 Lao Gong is Fire, P-07 is Earth, P-05 Jian Shi is Metal, P-03 Qu Ze is Water. The channel is yin Fire, so:

• Sedation (child) point — P-07 Da Ling (Earth, the child of Fire) — this point
• Tonification (mother) point — P-09 Zhong Chong (Wood, the mother of Fire)
• Horary point — P-08 Lao Gong (Fire on a Fire channel) — not the sedation point, a trap our P-08 record flags

Source: Sacred Lotus sources & references (channel, category, element and action records; the full Pericardium five-shu series and the yin/yang Yuan-point rule queried from our own data and checked against the P-04 and P-08 records), cross-referenced against multiple online sources.

What is P-07 Da Ling used for?

P-07 has one of the broadest indication lists on this channel — cardiac, digestive, mental-emotional and local — which is what a combined Source and sedation point would be expected to carry. Our own indication record is reproduced here in full.

• Cardiac pain
• Palpitations
• Stomach ache
• Vomiting
• Mental disorders
• Epilepsy
• Stuffiness of the chest
• Pain in the side (hypochondriac region)
• Convulsions
• Insomnia
• Irritability
• Foul breath

A necessary framing note. Cardiac pain is a medical emergency, and epilepsy requires diagnosis and management. This record describes classical use; it is not a suggestion that either be managed with acupuncture, and nothing here should delay care.

Note the mental-emotional content here. Unlike the outer-line spirit points in this library — BL-44, BL-47 and BL-49, all named for an organ’s spirit yet carrying entirely physical indications — P-07’s recorded list does include mental disorders, insomnia and irritability. Where our source record carries spirit indications this library reports them; where it does not, it says so. P-07 is the case where they are genuinely present.

How it is combined. With P-06 Nei Guan, one cun proximal, the Luo-Connecting point and Confluent point of the Yin Wei Mai — the channel’s most-used point. With HT-07 Shen Men, the Heart’s Source point, level with it on the other side of the wrist. With P-04 Xi Men, the Xi-Cleft point, for acute cardiac presentations. All held here.

Source: Sacred Lotus sources & references (indication record; P-04, P-06 and HT-07 classifications and the BL-44/47/49 indication records queried from our own data), cross-referenced against multiple online sources.

Where is P-07 Da Ling located?

P-07 is at the wrist crease on the palm side, between the two tendons that stand out when the wrist is flexed — level with HT-07 Shen Men on the little-finger side.

• At the wrist, between the tendons of palmaris longus and flexor carpi radialis
• Level with HT-07 Shen Men, which sits at the ulnar end of the same crease
• P-06 Nei Guan is 2 cun proximal, P-05 Jian Shi 3 cun, P-04 Xi Men 5 cun — all between the same two tendons

Four Pericardium points share one landmark pair. P-07, P-06, P-05 and P-04 all lie between palmaris longus and flexor carpi radialis, distinguished by measurement alone — and they carry four different classifications: Yuan-Source and sedation, Luo-Connecting and Confluent, Jing-River, and Xi-Cleft. Substituting one for another substitutes a category. Note also that palmaris longus is absent in a minority of people, which removes half the landmark.

Two Source points on one wrist crease. P-07 is the Pericardium’s; HT-07 is the Heart’s. They sit at opposite ends of the same crease, both are Yuan-Source and Shu-Stream points on yin Fire channels, and their actions overlap considerably — but our HT-07 record is the Heart’s sedation point too, exactly as P-07 is the Pericardium’s. The parallel is exact.

On the name. “Da Ling” means Great Mound — the mound being the prominence of the carpal bones the point sits against. Positional rather than functional.

Source: Sacred Lotus sources & references (location and translation records, retained unchanged; P-04, P-05, P-06 and HT-07 positions and classifications queried from our own data).

• A Manual of Acupuncture (p. 378): At the wrist, between the tendons of palmaris longus and flexor carpi radialis, level with Shenmen HE-7.
• Chinese Acupuncture and Moxibustion (p. 201): In the middle of the transverse crease of the wrist, between the tendons of m. palmaris longus and m. flexor carpi radialis.

How is P-07 Da Ling needled?

The standard texts record perpendicular insertion to roughly 0.3–0.5 inch, with moxibustion applicable. What follows is a neutral record of what the reference literature documents, not instruction for a reader.

• Angle and depth as recorded: perpendicular, 0.3–0.5 inch.
• Moxibustion: recorded as applicable.
• Regional anatomy: the median nerve lies deep between the two tendons that form this point’s landmark, entering the carpal tunnel at this level; the median artery’s remnant accompanies it in some people. The flexor tendons pass beneath into the tunnel.

Hazard, stated proportionately. The wrist has no body cavity beneath it and this is not a high-hazard point. The relevant structure is the median nerve, and the relevant fact is that it lies in the same tendon interval used to find the point — at the entrance to the carpal tunnel, where it is at its most confined. Our record for P-06 Nei Guan, two cun proximal, cites a cadaveric study placing the needle path within 2 cm of the median nerve and an ultrasound report of painless nerve perforation; those measurements were made at P-06 and are not presented here as describing P-07. No study measuring a safe depth at P-07 could be located, and no case report naming P-07 was located.

Source: Sacred Lotus sources & references (needling record, retained unchanged; P-06's cadaveric and ultrasound findings queried from our own data and attributed to P-06), cross-referenced against multiple online sources; regional anatomy from standard anatomical description.

Is there research on P-07, and what should a reader know?

No trial isolates P-07. Where the point appears it is one component of a protocol — cardiac, anxiety or carpal-tunnel related — and a study that includes a point in a protocol is not evidence about that point.

This channel demands more care than most on that question. P-06 Nei Guan is the one acupuncture point with a genuinely strong Western evidence base — a 2025 Cochrane network meta-analysis of 77 trials and 9,847 participants for post-operative nausea and vomiting — and it sits two cun from P-07 on the same two tendons. Our P-06 record also caught that the separate CINV Cochrane review was formally withdrawn in 2014. Evidence about P-06 is evidence about P-06. The short distance and shared landmark make drift easy here, and our P-04 record flags the same risk from the other side.

What this page can state with confidence. P-07 holds two classifications — Yuan-Source and Shu-Stream/Earth — which on a yin Fire channel makes it the sedation point. That is checkable against our own element records and agrees with the P-04 and P-08 records derived independently. The yin/yang Yuan-point rule that explains why both classifications sit on one point is verified across the whole library.

A note on searching for it. Our library codes this channel P-, while much of the literature uses PC-. A reader comparing sources should know which convention is in use, and any claim attached to this point should be checked against what a study actually measured.

Source: Sacred Lotus sources & references (classification and indication records; P-06's evidence base and withdrawn-review finding, and the channel-coding convention, queried from our own data).