ST-30 (Qi Chong) Surging Qi

What does ST-30 Qi Chong do?

Qi Chong ST-30 is the point at which the Penetrating Vessel — the Chong Mai, the "Sea of Blood" of the extraordinary vessels — is classically said to emerge at the surface of the body, and it is one of the two points of the Sea of Water and Grain. Sacred Lotus sources & references record both classifications: Meeting Point of the Stomach Channel with the Penetrating Vessel, and Point of the Sea of Water and Grain. Everything the point is used for follows from those two facts and from where it sits — low on the abdomen at the groin, at the junction between trunk and leg.

• Regulates qi in the lower burner — the defining action recorded in our own action record, and the reason ST-30 appears in prescriptions for lower abdominal pain, distension and swelling.
• Regulates the Penetrating Vessel — the extraordinary vessel the tradition holds responsible for menstruation, fertility and the ascending movement of qi and blood through the abdomen. This is the classification that gives ST-30 its gynaecological character: irregular menstruation, dysmenorrhoea, infertility and postpartum complaints.
• Subdues running piglet qi — ben tun, the classical disorder in which something is felt to rush upward from the lower abdomen toward the chest and throat in waves, then subside. The Penetrating Vessel is the vessel blamed for it, and ST-30 is the point on that vessel where the surge is met. The name of the point and the name of the disorder both turn on the same character for surging.
• Benefits the genitals and treats hernia disorders — for swelling and pain of the external genitalia, shan (hernia and genital-pain) disorders, impotence and swelling of the testes; the classical record is consistent on this and the point's position at the inguinal region is the obvious reason.
• Regulates the Stomach and intestines — its Yang Ming role, behind the recorded use for abdominal pain, borborygmus and intestinal disorders.

Why "Sea of Water and Grain" is not decoration. The Ling Shu chapter on the Four Seas names the Stomach as the Sea of Water and Grain and gives it two points: Qi Jie — an older name for Qi Chong ST-30 — above, and Zu San Li ST-36 below. Sacred Lotus sources & references carry that classification on both points and on no others, which is worth checking against, because ST-30's Sea classification is far less well known than ST-36's.

Source: Sacred Lotus sources & references (channel; Penetrating Vessel and Sea of Water and Grain classifications; existing action record; the Four Seas point sets queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 152); Chinese Acupuncture & Moxibustion (p. 152); Ling Shu (Spiritual Pivot), chapter on the Four Seas; cross-referenced against multiple online sources.

What is ST-30 Qi Chong used for?

Qi Chong ST-30 is used for disorders of the lower abdomen and genitals — hernia-type pain, genital swelling, impotence — and for the menstrual complaints that follow from its connection to the Penetrating Vessel. The indications recorded in Sacred Lotus sources & references are set out below together with those in the standard reference literature. They describe traditional use, not proven treatment, and this point carries the anatomical and pregnancy cautions set out under needling.

• Abdominal pain and lower abdominal pain
• Borborygmus (rumbling of the intestines)
• Hernia and shan disorders
• Swelling and pain of the external genitalia
• Impotence
• Dysmenorrhoea (painful periods)
• Irregular menstruation
• Infertility
• Retained placenta and postpartum abdominal pain, in the classical record
• Running piglet qi (ben tun) — surging sensations rising from the lower abdomen
• Swelling of the testes and hydrocele
• Pain and weakness at the front of the hip and thigh, as a local point

Source: Sacred Lotus sources & references (existing indication record); Chinese Acupuncture & Moxibustion (p. 152); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 152); cross-referenced against multiple online sources.

Where is ST-30 Qi Chong, and how is it used in practice?

Qi Chong lies low on the abdomen at the groin, two cun to the side of the midline, level with the top edge of the pubic bone — that is, level with Qu Gu REN-02 on the midline itself, five cun below the navel. Sacred Lotus sources & references give it in both terms, and they agree with each other. It is a bilateral point, and it sits in the inguinal region where the abdominal wall turns into the thigh — which is why the anatomy beneath it, set out under needling, matters more here than at almost any other abdominal point.

In practice ST-30 is not an everyday point. It is chosen for a specific reason: because the presentation is one the tradition attributes to the Penetrating Vessel, or because the complaint is squarely in the inguinal and genital region. Practitioners who use it regularly tend to use it in Chong Mai treatments rather than as a general abdominal point, and moxibustion and firm pressure are recorded methods alongside needling.

Which points is ST-30 combined with?

• With SP-04 Gong Sun — the Confluent point of the Penetrating Vessel and the point through which that vessel is normally opened. Pairing the vessel's Confluent point at the foot with the point where the vessel emerges on the abdomen is the structured Chong Mai treatment.
• With P-06 Nei Guan — SP-04's paired Confluent point, of the Yin Linking Vessel; SP-04 with P-06 is the standard extraordinary-vessel pairing for the abdomen and chest, and ST-30 is added locally.
• With REN-04 Guan Yuan and REN-03 Zhong Ji — the great midline points of the lower abdomen, giving a midline-plus-lateral treatment of the same territory.
• With ST-29 Gui Lai — the Stomach channel point one cun above on the same line, its constant neighbour and the more usual first choice for gynaecological complaints on this channel.
• With LIV-03 Tai Chong and SP-06 San Yin Jiao — the distal points for lower-abdominal and genital complaints; the Liver channel encircles the genitals in the classical description, and SP-06 is the meeting point of the three leg yin channels.
• With KI-11 Heng Gu — the Kidney channel point half a cun medial at the same level, itself a Meeting Point of the Kidney channel with the Penetrating Vessel. KI-11 begins the run of Kidney points from KI-11 to KI-21 that all carry that same classification in Sacred Lotus sources & references — the Penetrating Vessel's abdominal course.

Where does ST-30 sit among the Penetrating Vessel and Four Seas points?

Two classifications intersect at this point, and both are worth seeing whole.

The Penetrating Vessel. Sacred Lotus sources & references record SP-04 Gong Sun as its Confluent point; REN-01 Hui Yin as the meeting of the Conception, Penetrating and Governing Vessels — the shared root from which all three are said to arise; REN-07 Yin Jiao as a meeting of the Conception and Penetrating Vessels with the Kidney channel; ST-30 Qi Chong as the meeting of the Stomach channel with the Penetrating Vessel; and the eleven Kidney channel points from KI-11 Heng Gu up to KI-21 You Men as meeting points of the Kidney channel with the same vessel. Read as a map, that is the vessel's classical course: rooted in the pelvis, emerging at the groin at ST-30, then ascending the abdomen alongside the midline in the Kidney channel line. ST-30 is the surfacing point, which is exactly what its name says.

The Four Seas. The Ling Shu names four seas and gives points for each. Sacred Lotus sources & references carry the full scheme: the Sea of Qi at ST-09 Ren Ying, REN-17 Shan Zhong, DU-14 Da Zhui and DU-15 Ya Men; the Sea of Blood at BL-11 Da Zhu and ST-37 Shang Ju Xu; the Sea of Marrow at DU-16 Feng Fu and DU-20 Bai Hui; and the Sea of Water and Grain at ST-30 Qi Chong and ST-36 Zu San Li — the only two points in the library carrying that classification. ST-36 is famous and ST-30 is not, but classically they are the pair.

Source: Sacred Lotus sources & references (location; Penetrating Vessel and Four Seas point sets queried directly; SP-04, P-06, REN-01, REN-03, REN-04, REN-07, ST-29, ST-36, KI-11, LIV-03 and SP-06 records); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 152); Chinese Acupuncture & Moxibustion (p. 152); Ling Shu (Spiritual Pivot), chapter on the Four Seas; cross-referenced against multiple online sources.

Where is ST-30 located?

• A Manual of Acupuncture (p. 152): On the lower abdomen, 2 cun lateral to the midline, level with the superior border of the pubic symphysis (Qugu REN-2).
• Chinese Acupuncture and Moxibustion (p. 152): 5 cun below the umbilicus, 2 cun lateral to Qugu (REN-2).

How is ST-30 Qi Chong needled, and what lies beneath it?

One anatomical fact belongs at the front of this section, because it defines the point. The femoral artery lies immediately at ST-30. The WHO Standard Acupuncture Point Locations in the Western Pacific Region defines ST-30 as being in the groin region, level with the superior border of the pubic symphysis, 2 B-cun lateral to the anterior median line, over the femoral artery — the vessel's pulsation is part of the point's own definition, not a nearby hazard. Everything below is recorded as neutral reference data describing what the textbooks and the published anatomical work state. It is not instruction, and this page does not teach technique. Needling is carried out only by a qualified, licensed practitioner.

The angle and depth the texts record

• Sacred Lotus sources & references record perpendicular insertion of 0.5 to 1.0 inch, with moxibustion applicable.
• Deadman & Al-Khafaji (p. 152) and Chinese Acupuncture & Moxibustion (p. 152) record a comparable perpendicular range, and the standard reference literature attaches to this point an explicit caution to identify and avoid the femoral artery, which is palpable at or immediately lateral to the point in most people.
• Moxibustion is recorded as applicable, and indirect moxibustion and firm pressure are both documented methods at this point — the massage study cited below used pressure alone.

Discrepancy noted and flagged. Our own needling record for ST-30 carries the depth figure and the note that moxibustion is applicable, but it does not carry a vessel caution. The wider reference literature and the WHO standard both make the femoral artery central to this point. We keep our own location and depth record unchanged, and we record the vessel here rather than leaving a silence that a reader could mistake for an absence of anything to say. This is the single most important safety fact about ST-30 and it should not depend on which text a reader happens to open.

The measured anatomy

• Where the femoral artery runs. The femoral artery enters the thigh beneath the inguinal ligament at the mid-inguinal point — midway between the anterior superior iliac spine and the pubic symphysis — and continues down the front of the thigh. Level with the top of the pubic symphysis and two cun from the midline, ST-30 sits at or immediately medial to that line, which is why the standard texts describe the point as being found by the pulsation. The femoral vein lies immediately medial to the artery and the femoral nerve immediately lateral: the classical mnemonic order from inside out is vein, artery, nerve.
• What that means for depth. Unlike most abdominal points, the limiting structure at ST-30 is not an organ at depth but a large vessel at shallow depth, palpable through the skin. The bounded range in the texts and the instruction to palpate first both exist for that reason. The inguinal canal, and in men the spermatic cord, also lie in this territory.
• Depth at abdominal points is not a constant. Two systematic reviews of the safe-needling-depth literature — 33 studies in the first and 47 in the second, measured variously by MRI, CT, ultrasound and cadaveric dissection — both concluded that depths measured for the same point differ greatly between subject groups and between measuring methods, and that "safe depth" has never been standardised (J Altern Complement Med 2011;17(3):199–206, PMID 21417806; Evid Based Complement Alternat Med 2013;2013:740508, PMID 23935678). A textbook figure is a central estimate, not a guarantee. Ultrasound measurement of the allowable insertion range at a single abdominal point, REN-12, in 83 healthy volunteers found a mean of 25.3 mm with a standard deviation of 10.2 mm and a strong dependence on body habitus (Healthcare (Basel) 2022;10(9):1707, PMID 36141319, PMC9498562) — that study measured REN-12, not ST-30, and is cited only for the general finding that these depths vary widely between individuals.
• Honest limit of what we can source. We could not locate a published case report of femoral vessel injury attributed to acupuncture at ST-30, and we do not assert one. What is documented is the anatomy: a large, superficial, palpable artery at the point's own defined location, a bounded depth in every reference text, and an explicit instruction in the standard literature to find the pulse before doing anything else. For proportion, a meta-analysis of prospective clinical studies estimated serious adverse events in acupuncture at approximately 1 per 10,000 patients, with bleeding and needle-site reactions making up about half of all recorded events (Bäumler P et al., BMJ Open 2021;11:e045961, PMID 34489268).

The pregnancy caution

ST-30 is a point of the lower abdomen, and the points of the lower abdomen are routinely listed across the reference literature among those to be treated with caution or avoided during pregnancy. Sacred Lotus sources & references carry an explicit pregnancy caution over the neighbouring Conception Vessel points of the abdomen — the record for Guan Yuan REN-04 states that great care must be taken with the Conception Vessel points from Qu Gu REN-02 up to Shang Wan REN-13 in pregnant women — and ST-30 lies level with REN-02 at the bottom of exactly that band, two cun to the side. The same caution is applied to ST-30 and to the neighbouring lower-abdominal Stomach channel points in the wider reference literature. Recorded here as reference fact.

It is worth recording alongside the prohibition, as our REN-03, REN-04 and REN-06 records do, that the modern evidence for actual harm is weak. A review of the scientific literature on the so-called forbidden points found no objective evidence of harm across 15 clinical trials (823 women and several thousand treatments at one or more forbidden points), a cohort of 5,885 pregnant women, and animal work, with rates of preterm birth, miscarriage and stillbirth comparable to untreated controls (Carr DJ, Acupunct Med 2015;33(5):413–9, PMID 26362792). A later narrative review of randomised trials reached a similar conclusion about reported adverse outcomes (Med Acupunct 2019;31(6):346–360, PMID 31871522). The honest position is the same one this site takes on the Conception Vessel points: the traditional prohibition is long-standing and near-universal in the texts, our own records carry it, the controlled evidence has not confirmed the harm it anticipates, and most practitioners continue to observe it.

Source: Sacred Lotus sources & references (existing needling record; the pregnancy caution carried on the neighbouring Conception Vessel points); WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), ST30 definition; Deadman & Al-Khafaji, A Manual of Acupuncture (p. 152); Chinese Acupuncture & Moxibustion (p. 152); PMID 21417806; PMID 23935678; PMID 36141319 (PMC9498562); PMID 34489268; PMID 26362792; PMID 31871522 — each verified resolvable and checked for retraction status before citation.

What does the name Qi Chong mean?

Qi Chong means "Surging Qi" — qi, and chong, to surge, rush, thrust or penetrate. The same character chong gives the Penetrating Vessel its Chinese name, Chong Mai, and that is not a coincidence: this is the point at which that vessel is classically said to surge up to the body's surface. The name also matches the point's most distinctive indication, running piglet qi (ben tun) — the sensation of something rushing upward from the lower abdomen in waves — and, more prosaically, the palpable surge of the femoral artery by which the point is found. Three different surges, one character. An older name for the point, Qi Jie ("Qi Street"), appears in the Ling Shu and in the Four Seas material, and a reader meeting that name in a classical text should know it refers to this point.

Why does the Penetrating Vessel classification matter at ST-30?

The Penetrating Vessel is one of the eight extraordinary vessels, and the tradition gives it three titles that between them explain why a point on it matters: the Sea of Blood, the Sea of the Twelve Channels, and — with the Conception and Governing Vessels — one of the three vessels arising from a shared root in the pelvis. It is held responsible for the menstrual cycle, for fertility, and for the vertical movement of qi and blood through the trunk. Disorders attributed to it are characteristically surging ones: menstrual irregularity, abdominal urgency, and the upward rushing of running piglet qi.

Extraordinary vessels have no points of their own. They borrow points from the regular channels, and the borrowed points are where the vessel is reached. ST-30 is one of the small number of such points, and it is the one at which the Penetrating Vessel is said to emerge — which is why a Chong Mai treatment reaches for it even though the point sits on the Stomach channel. That mismatch between the channel a point belongs to and the vessel it serves is the same pattern seen at ST-25, which sits on the Stomach channel while collecting the qi of the Large Intestine.

Is there research on ST-30 Qi Chong?

Stated plainly: ST-30 has essentially no point-specific clinical research. The handful of studies that name it are small, old or use it as one point of several, and this record does not present whole-protocol trials as though they were about this point. The verifiable literature is as follows.

• An uncontrolled case series from 1998. Forty cases of hydrocele treated by massage at Qichong ST-30 were reported in the Journal of Traditional Chinese Medicine (1998;18(3):218–219, PMID 10453619). It is the only publication we could find in which ST-30 is the sole intervention. It has no control group, no randomisation and no blinding, and it is nearly thirty years old. It is recorded here because it exists and because it is genuinely point-specific — not as evidence of effectiveness.
• A very small Penetrating Vessel protocol study in dysmenorrhoea. Three groups of ten women with primary dysmenorrhoea were compared: electroacupuncture at a Chong Mai point set — Gong Sun SP-04, Qichong ST-30, Nei Guan P-06 and Bai Huan Shu BL-30 — against sham acupuncture and against no acupuncture, all groups permitted anti-inflammatory drugs. Pain fell in all three groups; needling away from the vessel points did not reduce pain significantly, and the authors reported benefit persisting for six months (Med Acupunct 2013;25(4):291–294, PMID 24761179, PMC3746293). Ten patients per arm is far too few to conclude anything, and ST-30 is one point of four. Its interest is that the protocol was built explicitly on the Penetrating Vessel classification this point carries.
• A registered trial protocol including ST-30. A randomised, single-blind, multicentre, placebo-controlled trial of acupuncture for pelvic pain in endometriosis was registered and its protocol published, using Guan Yuan REN-04, San Yin Jiao SP-06, Tai Chong LIV-03, Zhao Hai KI-06 and Qichong ST-30 against non-acupoint needling in 106 patients (Trials 2018;19(1):314, PMID 29880009, PMC5992761; ClinicalTrials.gov NCT03125304). This is a protocol paper. We could not locate a published results paper for it, and no result is claimed here.
• Point-selection and historical analyses. ST-30 appears in data-mining studies of ancient acupuncture prescriptions — for example among the points selected for impotence in the classical record (PMID 34085490) and in an analysis of ancient prescriptions for epigastric pain (PMID 39943771). These describe what the historical texts prescribed, which is a legitimate and interesting finding about the tradition, and no kind of evidence about clinical effect.

What is missing should be said plainly: there is no randomised controlled trial of ST-30 as a single point for any indication, no imaging or mechanistic work specific to it, and nothing that would support a clinical claim. For a point with this much classical standing, that gap is striking and it is stated here rather than papered over.

How does ST-30 compare with the points around it?

ST-29 Gui Lai lies one cun directly above on the same line and is the Stomach channel's more commonly used gynaecological point — it does not carry the Penetrating Vessel classification, and where a practitioner wants a lower-abdominal Stomach channel point without the inguinal anatomy, ST-29 is the usual answer. REN-02 Qu Gu is on the midline at the same level, two cun medial. KI-11 Heng Gu sits between them, half a cun from the midline, and begins the Kidney channel's run of Penetrating Vessel meeting points up the abdomen. SP-12 Chong Men — "Surging Gate", sharing the same chong character — lies further out and slightly higher in the same inguinal crease and is likewise located by reference to the femoral artery, which makes the two easy to confuse; SP-12 is a meeting point of the Spleen and Liver channels with the Yin Linking Vessel, a different classification entirely. LIV-12 Ji Mai, "Urgent Pulse", is the Liver channel's own point in this region and is named, like Qi Chong, for the arterial pulsation found there. ST-31 Bi Guan lies below on the thigh, past the inguinal crease. And ST-36 Zu San Li, far away below the knee, is ST-30's partner in the Sea of Water and Grain — the two ends of the same classical pairing.

Source: Sacred Lotus sources & references (name, classifications and the cross-referenced point records above, queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 152); Chinese Acupuncture & Moxibustion (p. 152); Ling Shu (Spiritual Pivot), chapter on the Four Seas; PubMed PMID 10453619, 24761179 (PMC3746293), 29880009 (PMC5992761), 34085490, 39943771 — each verified resolvable and checked for retraction status before citation; cross-referenced against multiple online sources.