BL-15 (Xin Shu) Heart Shu

What does BL-15 Xin Shu do?

Xin Shu BL-15 is the Back-Shu point of the Heart — the place on the back where the Heart's qi is said to infuse the body surface — and its recorded work is to tonify and nourish the Heart, regulate its qi, and calm the spirit. Sacred Lotus sources & references record that classification directly. It lies beside the fifth thoracic vertebra, on the inner Bladder line, level with the heart itself inside the chest, and it is the most used of the several back points that address the Heart.

• Tonifies and nourishes the Heart — the primary recorded action and the Back-Shu action proper. This is the point reached for where the Heart is depleted rather than obstructed: palpitations with fatigue, poor memory, timidity, a spirit that is thin rather than agitated.
• Regulates Heart qi — for irregular, hurried or fluttering rhythm and for the sense of qi moving wrongly in the chest.
• Calms the spirit — the action that makes BL-15 one of the tradition's principal points for the mind. In classical theory the Heart houses the shen, the spirit, and disturbances of sleep, memory, concentration, fear and mania are all read as Heart-spirit disturbances. Insomnia, night sweating, panic and mania are all in this point's recorded range because of it.
• Unbinds the chest and resolves blood stasis — for pain in the cardiac region and for a chest that feels gripped or obstructed. Blood stasis in the chest is the classical pattern behind fixed, stabbing cardiac pain, and BL-15 is a Back-Shu point at which that pattern is addressed.
• Clears Heart fire — the counterweight to the tonifying action. Where the Heart is hot rather than empty — agitation, mouth ulcers, mania, restless heat at night — the same point is used in a draining rather than a supplementing way.
• Serves as the Heart's diagnostic point — as with all Back-Shu points, tenderness, a sunken quality or a change in the tissue at BL-15 is read as a sign referring to the organ it names, and the point is palpated as well as needled.

Source: Sacred Lotus sources & references (existing action record; Bladder channel and Back-Shu of the Heart classification queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 270); Chinese Acupuncture & Moxibustion (p. 177); cross-referenced against multiple online sources.

What is BL-15 Xin Shu used for?

Xin Shu BL-15 is used for palpitations and pain in the cardiac region, and — as much or more — for the mind: panic, poor memory, insomnia, night sweating and mania. The indications below are those carried in Sacred Lotus sources & references together with those set out in the standard reference literature. They describe traditional use, not proven treatment, and this point carries the pneumothorax safety facts set out under needling.

• Palpitations and irregular heartbeat
• Pain in the cardiac region
• Panic, fright and fearfulness
• Anxiety and restlessness
• Poor memory and forgetfulness
• Insomnia and disturbed, dream-filled sleep
• Night sweating
• Mania and disturbed spirit
• Epilepsy
• Cough
• Coughing or spitting of blood
• Nocturnal emission
• Fullness and oppression of the chest
• Poor concentration and mental fatigue

Source: Sacred Lotus sources & references (existing indication record); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 270); Chinese Acupuncture & Moxibustion (p. 177).

Where is BL-15 Xin Shu, and how is it used in practice?

Xin Shu lies on the upper back, one and a half cun either side of the midline, level with the lower edge of the fifth thoracic vertebra — that is, level with Shen Dao DU-11 on the spine itself. Sacred Lotus sources & references give it in both terms. It is a bilateral point, needled on both sides, and it sits one level below Jue Yin Shu BL-14 and two below Fei Shu BL-13, in the run of Back-Shu points that descends the inner Bladder line in roughly the order the organs occupy the trunk.

In practice BL-15 is one of the two or three most-used Back-Shu points, and its everyday work is as much psychological as cardiac. Where a presentation involves poor sleep, poor memory, anxiety, night sweating or fright, BL-15 is very often in the prescription, because in classical theory those all belong to the Heart's housing of the spirit. It is heavily treated with moxibustion, cupping and herbal point application, none of which carries the depth hazard that needling in this band does — one reason so much of the treatment delivered at the upper thoracic Shu points involves no needle at all.

Which points is BL-15 combined with?

• With Ju Que REN-14 — the Shu-Mu combination. REN-14, on the front midline just below the tip of the breastbone, is the Front-Mu point of the Heart, confirmed by query in Sacred Lotus sources & references, and it is written up in this library alongside this record. Back-Shu with Front-Mu — the back and the front of one organ, treated together — is the oldest structured pairing in the medicine, and this is its Heart instance. Data-mining of ancient prescriptions identifies the Back-Shu-with-Front-Mu structure as one of the four recurring combination forms in the classical repertoire (Zhongguo Zhen Jiu 2025;45(2):253–261, PMID 39943771).
• With Shen Men HT-07 — the Heart channel's Source point at the wrist and the standard distal partner for palpitations, insomnia, anxiety and poor memory. Local Back-Shu point with distal Source point is the usual structure.
• With Jue Yin Shu BL-14 — one level above at T4, the Pericardium's Back-Shu point. The two are constantly used together for the chest and the heart, and clinical accounts describe locating the tender points corresponding to Jue Yin Shu BL-14 and Xin Shu BL-15 and treating them as a pair (Zhongguo Zhen Jiu 2026;46(2):275–280, PMID 41741992).
• With Ge Shu BL-17 — two levels below at T7, the Hui-Meeting point of blood, added wherever blood stasis is the pattern. The pairing of BL-15 with BL-17 is the standard back combination for fixed cardiac pain.
• With Shen Shu BL-23 — for the pattern classical theory calls disharmony between Heart and Kidneys, in which the Heart's fire above and the Kidneys' water below have lost contact. A randomised trial of 111 women with menopausal insomnia attributed to exactly that pattern needled Shen Men HT-07, San Yin Jiao SP-06, An Mian, Zhao Hai KI-06, Shen Mai BL-62, Si Shen Cong and Xin Shu BL-15, with electroacupuncture at several including BL-15, in both arms (Zhen Ci Yan Jiu 2019;44(7):516–519, PMID 31368284). All of those points are held in this library.
• With Bai Hui DU-20, Shen Ting DU-24, Jiu Wei REN-15 and Shen Men HT-07 — for epilepsy and disturbed spirit. This is not a modern grouping: analysis of 205 acupuncture prescriptions for epilepsy drawn from the classical texts found the commonly used points to be Bai Hui DU-20, Jiu Wei REN-15, Shen Men HT-07, Shen Ting DU-24 and Xin Shu BL-15, with treatment given mainly by moxibustion or by moxibustion combined with needling (Zhongguo Zhen Jiu 2025;45(1):123–130, PMID 39777888). BL-15 is among the five most frequent points in that entire ancient record.
• With Nei Guan P-06 — the Connecting point of the Pericardium at the wrist, the tradition's principal distal point for the chest and the heart, and the point the classical record reaches for most often in cardiac complaints of all kinds.

Where does BL-15 sit among the Back-Shu points?

The Back-Shu points run down the inner Bladder line, one and a half cun either side of the spine, one for each organ, in roughly the order the organs sit in the trunk. Sacred Lotus sources & references hold the complete set of twelve:

• Fei Shu BL-13 — Lungs
• Jue Yin Shu BL-14 — Pericardium
• Xin Shu BL-15 — Heart. This page.
• Gan Shu BL-18 — Liver
• Dan Shu BL-19 — Gallbladder
• Pi Shu BL-20 — Spleen
• Wei Shu BL-21 — Stomach
• San Jiao Shu BL-22 — San Jiao
• Shen Shu BL-23 — Kidneys
• Da Chang Shu BL-25 — Large Intestine
• Xiao Chang Shu BL-27 — Small Intestine
• Pang Guang Shu BL-28 — Bladder

Each Back-Shu point pairs with its organ's Front-Mu point on the front of the trunk; the Heart's is Ju Que REN-14. Reading the list in order shows why BL-15 sits where it does: the Lungs at T3 and the Pericardium at T4 above it, the Heart at T5, then the diaphragm at T7 and the abdominal organs below — the vertical order on the back mirrors the vertical order inside the trunk. BL-15 is the highest of the three points that address the heart and its envelope, and the only one of the twelve whose organ is described in the classics as the monarch.

Source: Sacred Lotus sources & references (location, channel and Back-Shu classification; the full twelve-point Back-Shu set and the twelve Front-Mu points queried directly; REN-14 confirmed as Front-Mu of the Heart); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 270); Chinese Acupuncture & Moxibustion (p. 177); PMID 39943771; PMID 41741992; PMID 31368284; PMID 39777888; cross-referenced against multiple online sources.

Where is BL-15 located?

• A Manual of Acupuncture (p. 270): 1.5 cun lateral to the lower border of the spinous process of the fifth thoracic vertebra (T5).
• Chinese Acupuncture and Moxibustion (p. 177): 1.5 cun lateral to Shendao (DU-11), at the level of the lower border of the spinous process of the fifth thoracic vertebra.

How is BL-15 Xin Shu needled, and what is the pneumothorax risk?

Stated plainly: BL-15 lies over the thorax beside the fifth thoracic vertebra, with the lung directly beneath it, and pneumothorax — a punctured lung — is the documented hazard at this point and at every point in the band it belongs to. The reference texts do not record a perpendicular insertion here. Our own record specifies oblique insertion of 0.5 to 0.7 inch, and the angle is the substance of the record, not a stylistic detail. Everything below is recorded as neutral reference data describing what the textbooks and the published anatomical studies state. It is not instruction, this page does not teach technique, and needling is carried out only by a qualified, licensed practitioner.

The angle and depth the texts record

• Sacred Lotus sources & references record oblique insertion of 0.5 to 0.7 inch, with moxibustion applicable — the same bounded figure our records give for Fei Shu BL-13 two levels above, Feng Men BL-12 above that, Ge Shu BL-17 below and Pi Shu BL-20 further down the same line. The whole thoracic run is bounded identically, which is itself informative: the constraint belongs to the region, not to any one point in it.
• Deadman & Al-Khafaji (p. 270) and Chinese Acupuncture & Moxibustion (p. 177) record oblique insertion directed medially, toward the spine, in a comparable range, and both attach an explicit caution against deep or laterally angled insertion at the thoracic Shu points because of the lung beneath. Angling toward the vertebral column keeps the needle in the muscle mass with bone behind it; angling outward points it at the intercostal space and the pleura behind that.
• Moxibustion, cupping and herbal point application are all recorded here and are very common at this point. None of them carries the pneumothorax hazard, which is one reason the upper back is so often treated without needles at all — and why the classical record for BL-15 in epilepsy is predominantly a moxibustion record (PMID 39777888).
• For comparison within our own holdings: the 0.5–0.7 inch recorded at BL-15 is bounded in the same way as the 0.3–0.5 inch given for GB-21 over the apex of the lung, and is considerably shallower than the 1 to 1.2 inch given for BL-23 in the lumbar region below the ribs. Depth figures in this literature track the structure underneath, not the size of the region.

The measured anatomy — and precisely what each study measured

• A CT study that measured BL-15 itself. This is the point-specific finding. A retrospective study measured, directly from chest CT images, the safe needling depth at 23 upper-back acupoints in 319 patients aged 4 to 18 (205 boys, 114 girls), defining safe depth as the distance from the skin surface of the point to the pleura. The 23 points were DU-09 to DU-14, BL-11 to BL-17, BL-41 to BL-46, SI-14, SI-15, GB-21 and SP-21. The measured depth at Xin Shu BL-15 was 25.48 ± 6.57 mm in boys and 23.93 ± 5.41 mm in girls, a difference that was significant at this point (P = 0.024). Across the five age bands the depth at BL-15 rose from 20.94 mm at ages 4 to 6 to 27.65 mm at ages 16 to 18, and it rose with body size as well — from 22.86 ± 4.42 mm in the lightest weight band to 29.73 ± 10.12 mm in the heaviest, and from 22.62 ± 3.81 mm in the underweight body-mass-index group to 29.78 ± 9.61 mm in the obese one. Multiple regression identified weight as the single most important determinant at all 23 points (Ma YC et al., BMC Complement Altern Med 2016;16:85, PMID 26922245, PMC4769822, DOI 10.1186/s12906-016-1060-x). State the limits precisely: these are children and adolescents drawn from a single Taiwanese hospital population, all of them patients rather than healthy children, and the figure is the distance at which the pleura is reached — not a recommended needling depth.
• Why that figure is worth reading twice. Two and a half centimetres, in a child, is the entire margin, and a standard deviation of more than six millimetres in boys means individual children differed from one another by more than the whole textbook insertion range. Honest limit on the adult figure: no imaging study measuring a safe needling depth at BL-15 in adults could be located, and none is quoted. For adults, what is recorded here is the bounded depth and specified angle the reference texts give, together with the measured anatomy of the surrounding region — with every measurement attributed to the point at which it was actually made.
• Cadaveric mapping of the pleural dome — the study named BL-11. A dissection study of 46 adult bodies mapped the dome of the pleura against the commonly used points around it, naming Da Zhu BL-11 — the Bladder-channel point four levels above Xin Shu on the same line — explicitly alongside Tian Tu REN-22, Jian Jing GB-21, Qi She ST-11 and Ding Chuan EX-B1. The projection of the pleural dome varied widely between individuals, extending beyond the medial third of the clavicle in almost 60 per cent of bodies. The authors' operative conclusion was that when a point is located and angled as the standard describes the pleura is not reached, but exceeding the recorded depth breaches the pleural membrane (Chen Y et al., Zhongguo Zhen Jiu 2006;26(5):346–348, PMID 16739850). That study named BL-11, not BL-15; the finding is cited for the region, not as a measurement of this point.
• How thin the tissue actually is over the lung — measured at GB-21. The nearest directly measured adult figure in this region comes from Jian Jing GB-21 on the shoulder: ultrasonography in 101 adults measured the depth from skin to the pleural line at 17.4 mm in men and 14.6 mm in women on average, increasing with weight, height and body mass index (Lin S-K et al., J Acupunct Meridian Stud 2018;11(6):355–360, PMID 29936338). That figure is for GB-21, not for Xin Shu. It is offered as the measured scale of the region rather than as a number for this point — but it makes the essential fact concrete: over the shoulder girdle and upper back, a centimetre and a half can be the whole of the margin.
• Adult back depths, measured as a region. A CT study of 120 patients, grouped by weight, height and sex, measured the distance from the skin of the back to the thoracic pleura at the relevant acupuncture locations and defined that distance as the safe depth. Depths did not differ significantly between the sexes but differed highly significantly between body-size groups (P < 0.01) (Zhong Xi Yi Jie He Za Zhi 1991;11(1):10–13, PMID 2054884), with a companion study doing the same for the chest (Zhonghua Yi Xue Za Zhi (Taipei) 1992;50(5):388–399, PMID 1338010). Neither abstract names BL-15 among the points measured.
• No single agreed safe depth exists for any point. Two systematic reviews of the safe-depth literature — 33 studies in the first, 47 in the second, by MRI, CT, ultrasound and cadaveric dissection — both concluded that measured depths for the same point differ greatly between subject groups and 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 depth figure describes an average body, not a constant.
• What lies beneath, in plain terms. At the T5 level the needle passes through skin, subcutaneous tissue, trapezius and rhomboid, then the erector spinae mass beside the vertebra. In front of those lie the fifth and sixth ribs and, between them, the intercostal space with the parietal pleura and the lung immediately behind it. There is no bony floor here in the way there is over the scapula or the occiput. That is the whole anatomical reason for the recorded medial angle and shallow depth. It is also worth noting the obvious: the heart lies behind the chest wall at roughly this level, which is why this is the Heart's Back-Shu point — and the same fact bounds the needle.

What is documented, and how often

Pneumothorax is the second most frequently reported serious adverse event in acupuncture. A systematic review of the Chinese case-report literature from 1956 to 2010 identified 1,038 adverse-event cases across 167 articles, of which 307 were pneumothorax — behind only fainting. Thirty-five deaths were recorded across the whole series, and the authors attributed the events chiefly to improper technique, concluding that most were avoidable through standardised training (He W et al., J Altern Complement Med 2012;18(10):892–901, PMID 22967282). A companion systematic review of 115 Chinese-language articles reporting 479 adverse events including 14 deaths reached the same conclusion about traumatic complications (Zhang J et al., Bull World Health Organ 2010;88(12):915–921C, PMID 21124716, PMC2995190). The presentation is not always immediate: an emergency-medicine case report describes a healthy 38-year-old woman who developed pleuritic chest pain the day after dry needling of the back, with bedside ultrasound showing absent lung sliding and a lung point on the right (Cureus 2021;13(3):e14207, PMID 33948398, PMC8086747). Fatal cases exist: an autopsy report describes bilateral pneumothoraces following electroacupuncture, the authors noting that electrical pulses and the muscle contraction they cause may draw needles deeper than the depth at which they were inserted (J Forensic Sci 2022;67(1):377–383, PMID 34435369). That last detail matters at BL-15 in particular, because electroacupuncture at this point is common in the published protocols. A pneumothorax after needling over the upper back may declare itself hours later, with sudden chest pain, breathlessness or a persistent dry cough; it is a medical emergency requiring immediate assessment.

What we will not claim. Despite an extensive search, we could not source a published case report naming BL-15 specifically as the point at which a pneumothorax or other injury occurred, and no such claim is made here. What is recorded is what is documented: a bounded oblique depth in all the reference texts, cadaveric evidence that exceeding the recorded depth in this band breaches the pleura, an ultrasound-measured margin of about a centimetre and a half over the nearby shoulder, and a large published record of pneumothorax following needling over the thorax and upper back.

Risk in proportion

A meta-analysis of prospective clinical studies estimated serious adverse events in acupuncture at approximately 1 per 10,000 patients and around 8 per million treatments, with about half of all recorded events being bleeding, pain or flare at the needle site, placing acupuncture among the safer treatments in medicine (Bäumler P et al., BMJ Open 2021;11:e045961, PMID 34489268). Both facts belong together: the overall rate is low, and the events that do occur concentrate in the band of points over the lung to which Xin Shu belongs. The bounded oblique depth exists to keep it that way.

Source: Sacred Lotus sources & references (existing needling record); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 270); Chinese Acupuncture & Moxibustion (p. 177); PMID 16739850 (named BL-11); PMID 29936338 (measured GB-21); PMID 26922245 (PMC4769822); PMID 2054884; PMID 1338010; PMID 21417806; PMID 23935678; PMID 22967282; PMID 21124716 (PMC2995190); PMID 33948398 (PMC8086747); PMID 34435369; PMID 34489268 — each verified resolvable and checked for retraction status before citation.

What does the name Xin Shu mean?

Xin Shu means "Heart Shu" — xin, the heart, and shu, a transport point. Sacred Lotus sources & references translate it exactly that way. The character shu carries the sense of conveying or transporting, and the Back-Shu points are named for exactly that: the places on the back where each organ's qi is transported to the body surface. Like the other eleven Back-Shu names, this one describes a function rather than reaching for an image, which is why the set is among the easiest in acupuncture to learn — the name tells you the organ and the classification and nothing else.

It is worth noticing what the plainness conceals. The Heart in classical medicine is not only the organ that beats; it is the monarch, the seat of the spirit, the organ in which consciousness, memory, sleep and emotional steadiness are said to reside. A point named simply "Heart transport" therefore carries an indication list that runs from cardiac pain through insomnia and forgetfulness to mania, and nothing in the name warns you of that range.

Why does being the Heart's Back-Shu point matter?

Because it is the only one there is. Each of the twelve organs has exactly one Back-Shu point, and BL-15 is the Heart's, confirmed by query in Sacred Lotus sources & references. Three things follow.

• It is a diagnostic point as well as a treatment point. Back-Shu points are palpated. Tenderness, a sunken quality or a change in the tissue at BL-15 is read as a sign referring to the Heart. That diagnostic use is old, and it has an unexpected modern echo: in mice with experimentally induced myocardial ischaemia, dye injected into the bloodstream leaked out at body-surface points concentrated over the T1 to T5 spinal segments, at Fei Shu BL-13, Jue Yin Shu BL-14 and Xin Shu BL-15, alongside measurable changes in the excitability of the corresponding sensory nerve cells (Zhen Ci Yan Jiu 2023;48(9):833–842, PMID 37730253; and a companion study on sodium-channel mechanisms, Zhen Ci Yan Jiu 2025;50(7):743–753, PMID 40691024). These are animal studies of a mechanism, not evidence of clinical effect — but they are point-named and they concern precisely the phenomenon the tradition calls a Back-Shu point becoming tender when its organ is in trouble.
• It is not on the Heart channel. The Heart channel runs from the armpit down the inner arm to the little finger and does not cross the back at all. The Heart's Back-Shu point is therefore on the Bladder channel — assigned by where the organ can be reached from behind, not by which line runs over the spot. The same is true of all twelve.
• It pairs with a Front-Mu point. The Heart's Front-Mu is Ju Que REN-14, just below the tip of the breastbone, confirmed by query and written up in this library alongside this record. Back-Shu points are classically weighted toward chronic and deficient presentations, Front-Mu points toward acute and excess ones; using both is the Shu-Mu combination.

Is there research on BL-15 Xin Shu?

BL-15 is better represented in the research literature than most Back-Shu points, but the distinction has to be drawn carefully: the studies that name it individually are historical and mechanistic, while the clinical trials that use it are multi-point protocols in which nothing is attributable to this point alone.

• The classical record names this point, twice, at the top of the list. Researchers at the China Academy of Chinese Medical Sciences data-mined the earliest recorded ancient prescriptions for chest obstruction and heart pain. The high-frequency base points were Da Ling P-07, Nei Guan P-06, Tai Xi KI-03, Tai Chong LIV-03, Shang Wan CV-13, Yong Quan KI-01 and Xin Shu BL-15 — the only Bladder-channel point in that group — with the governing principle summarised as "the Pericardium acting on behalf of the Heart" (Zhongguo Zhen Jiu 2025;45(10):1505–1511, PMID 41074530). Separately, an analysis of 205 classical prescriptions for epilepsy found the commonly used points to be Bai Hui DU-20, Jiu Wei REN-15, Shen Men HT-07, Shen Ting DU-24 and Xin Shu BL-15, treated mainly by moxibustion (Zhongguo Zhen Jiu 2025;45(1):123–130, PMID 39777888). Two independent analyses of the ancient corpus, two different conditions, and BL-15 in the leading group of both.
• Animal work on acupoint sensitisation. Described above: in myocardial-ischaemia model mice, surface exudation concentrated at BL-13, BL-14 and BL-15 over the T1–T5 segments, with corresponding electrophysiological changes in the dorsal root ganglion neurons (PMID 37730253, PMID 40691024). Mouse studies of a proposed mechanism, named for these points, and not evidence about treatment in people.
• Clinical trials that include the point. A randomised trial of 111 women with menopausal insomnia used BL-15 among seven body points with electroacupuncture at several of them, comparing body acupuncture with body plus auricular acupuncture (Zhen Ci Yan Jiu 2019;44(7):516–519, PMID 31368284). A randomised trial of 106 patients with postherpetic neuralgia used Xin Shu BL-15, Ge Shu BL-17, Gan Shu BL-18, Pi Shu BL-20, Tian Shu ST-25 and midline points in a "Tongyuan" electroacupuncture protocol against conventional segmental electroacupuncture, reporting better pain, sleep and mood scores and a lower recurrence rate at three months (Zhongguo Zhen Jiu 2026;46(7):1068–1074, PMID 42443075). A randomised trial in 60 children with autism spectrum disorder included BL-15 in a Jin's three-needle protocol (Zhongguo Zhen Jiu 2025;45(9):1259–1264, PMID 40954056). All three are single-centre, unblinded, whole-protocol studies; none isolates this point.

What is missing should be said plainly: there is no randomised trial of BL-15 alone, no sham-controlled study of it, no imaging study measuring safe depth at it in adults — the one study that measured this point directly is the paediatric CT study set out under needling (PMID 26922245, PMC4769822) — and none of its cardiac or spirit indications has been tested at this point specifically. Where BL-15 appears in the trial literature it is one point among many, and nothing in those studies is attributable to it.

How does BL-15 compare with the points around it?

Jue Yin Shu BL-14 lies one level above at T4 and is the Pericardium's Back-Shu point; the Pericardium is described in classical theory as the Heart's protective envelope, and BL-14 takes the cardiac complaints in which the tradition holds that the envelope rather than the monarch should be treated — a principle the classical prescription record follows closely (PMID 41074530). The two are constantly needled together. Fei Shu BL-13 two levels above at T3 is the Lungs' Back-Shu point and shares BL-15's cough and chest indications from the respiratory side. Ge Shu BL-17 two levels below at T7 is the Hui-Meeting point of blood and is BL-15's partner wherever blood stasis is the pattern. Shen Tang BL-44 — "Spirit Hall" — is BL-15's outer companion three cun lateral at the same T5 level, and its name marks it as the outer-line point for the Heart's spirit. Shen Dao DU-11 — "Spirit Path" — lies directly medial on the midline at the same level, and the naming of the three points at T5 is worth pausing on: Heart transport, Spirit path, Spirit hall, all at one vertebral level, all naming the same idea from three positions. Ju Que REN-14 on the front of the trunk is BL-15's Front-Mu counterpart. For readers looking for the Heart channel's own points, note that they are all on the arm — Shen Men HT-07 at the wrist is the usual distal choice — and that none of BL-15's classical partners on the back is among them.

Source: Sacred Lotus sources & references (name, translation, channel, Back-Shu classification, the Back-Shu and Front-Mu sets, and the REN-14, BL-13, BL-14, BL-17, BL-44, DU-11 and HT-07 records queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 270); Chinese Acupuncture & Moxibustion (p. 177); PMID 41074530; PMID 39777888; PMID 37730253; PMID 40691024; PMID 31368284; PMID 42443075; PMID 40954056 — each verified resolvable and checked for retraction status before citation; cross-referenced against multiple online sources.