四十五难曰∶经言八会者，何也？
然∶腑会太仓，脏会季胁，筋会阳陵泉，髓
会绝骨，血会膈俞，骨会大杼，脉会太渊，气会三焦外一筋直两乳内也。热病在内者，取其会之气
穴也。
人身脏腑筋骨髓血脉气，此八者，皆有会合之穴，若热病在于内，则于外取其所会之穴，以去
疾也。太仓属任脉，即中脘穴也，在脐上同身寸之四寸，六腑取禀于胃，故为腑会。季胁属足厥阴，
即章门穴也，在大横外直脐季胁端，为脾之募，五脏取禀于脾，故为脏会。阳陵泉属足少阳，足少
阳之筋，结于膝外廉，即此穴也，在膝下同身寸之一寸外廉陷中，又胆与肝表里，肝者筋之合，故
为筋会。绝骨即枕骨，名玉枕穴，在络却后同身寸之一寸五分，挟脑户旁一寸三分，属足太阳膀胱，
与肾合，肾主骨，脑为髓海，乃肾精所生，故为髓会，绝字疑是简误。或云∶绝骨属足少阳，一名
阳辅，在外踝上同身寸之四寸，辅骨前，绝骨端如前三分，诸髓皆属于骨，少阳主骨，凡物极则反，
骨绝于此，而少阳生之，故髓会于绝骨也，于义亦通。膈俞属足太阳，在项后第七椎去脊两旁各同
身寸之一寸五分，在中焦之分，心俞下，肝俞上，心统血，肝藏血，能化精微而为血之地，故为血
会。大杼属足太阳，在项后第一椎下，去脊两旁各同身寸之一寸五分，为冲脉之俞。《灵枢·动输
篇》曰∶冲脉与肾之大络，起于肾下，盖肾主骨，膀胱与肾合，故为骨会。太渊属手太阴，在掌后
陷中，即寸口也，肺朝百脉，故为脉会。三焦外，谓在焦膜之外，两乳内，谓两乳之中，任脉之所
过，即膻中穴也，在玉堂下同身寸之一寸六分。《灵枢·海论篇》曰∶膻中为气之海，故为气会。
此八会，《内经》无考，然其义甚精，
必古医经之语也。
Difficulty 45 states: The classics speak of the "Eight Hui (Meeting) Points," what are they?
In response: The Hui Point of the Fu organs is Taicang; the Hui Point of the Zang organs is Jixie; the Hui Point of the tendons is Yanglingquan (GB34); the Hui Point of the marrow is Juegu; the Hui Point of the blood is Geshu (BL17); the Hui Point of the bones is Dazhu (BL11); the Hui Point of the vessels is Taiyuan (LU9); and the Hui Point of the Qi is located outside the Sanjiao (Triple Burner), along a tendon directly between the two breasts. For heat diseases located internally, one should select the Qi points of these Hui acupoints for treatment.
The human body's Zang organs, Fu organs, tendons, marrow, bones, vessels, blood, and Qi—these eight categories each have specific acupoints where their energies meet. If a heat disease resides within, one selects the corresponding external Hui acupoints to eliminate the pathology.
Taicang belongs to the Ren Mai (Conception Vessel) and refers to the Zhongwan (CV12) acupoint, located four cun above the umbilicus. Since the six Fu organs derive their nourishment from the Stomach, this point serves as the Hui Point of the Fu organs.
Jixie belongs to the Foot-Jueyin Liver Meridian and refers to the Zhangmen (LR13) acupoint, located lateral to the Daheng acupoint, at the end of the costal margin aligned with the umbilicus. It is the Mu-Alarm point of the Spleen. Since the five Zang organs derive their nourishment from the Spleen, this point serves as the Hui Point of the Zang organs.
Yanglingquan (GB34) belongs to the Foot-Shaoyang Gallbladder Meridian. The tendons of the Foot-Shaoyang meridian knot at the lateral aspect of the knee, which is this acupoint, located in the depression one cun below the knee laterally. Furthermore, the Gallbladder and Liver are interior-exteriorly related, and the Liver governs the tendons; therefore, it is the Hui Point of the tendons.
Juegu here refers to the occipital bone, specifically the Yuzhen (BL9) acupoint, located one cun five fen posterior to the Luoque acupoint, flanking the Naohu acupoint by one cun three fen laterally. It belongs to the Foot-Taiyang Bladder Meridian and is internally-externally related to the Kidney. The Kidney governs the bones, and the brain is the sea of marrow, generated by Kidney essence; thus, it is the Hui Point of the marrow. The character "Jue" is suspected to be a scribal error or abbreviation. Alternatively, some state that Juegu belongs to the Foot-Shaoyang meridian, also known as the Yangfu (GB38) acupoint, located four cun above the lateral malleolus, anterior to the fibula, at the end of the fibular shaft projecting forward three fen. All marrow belongs to the bones, and the Shaoyang governs the bones. When things reach an extreme, they reverse; bone energy ends here while Shaoyang energy arises, so the marrow meets at Juegu. This interpretation is also logically consistent.
Geshu (BL17) belongs to the Foot-Taiyang Bladder Meridian, located one cun five fen lateral to the spinous process of the seventh thoracic vertebra, in the region of the Middle Jiao, below Xinshu and above Ganshu. The Heart commands the blood, and the Liver stores the blood; this is the place where essence and subtle nutrients are transformed into blood; therefore, it is the Hui Point of the blood.
Dazhu (BL11) belongs to the Foot-Taiyang Bladder Meridian, located one cun five fen lateral to the spinous process of the first thoracic vertebra, and is the Shu-Stream point of the Chong Mai (Penetrating Vessel). The *Ling Shu · Dong Shu* chapter states: "The Chong Mai and the large collateral of the Kidney originate from below the Kidney." Since the Kidney governs the bones and the Bladder is internally-externally related to the Kidney, this point serves as the Hui Point of the bones.
Taiyuan (LU9) belongs to the Hand-Taiyin Lung Meridian, located in the depression at the wrist crease, which is also the Cun Kou pulse position. The Lung directs all vessels; therefore, it is the Hui Point of the vessels.
"Straight outside the Sanjiao" refers to outside the diaphragmatic membrane; "between the two breasts" refers to the space between the mammary glands, where the Ren Mai passes. This is the Shanzhong (CV17) acupoint, located one cun six fen below the Yutang acupoint. The *Ling Shu · Hai Lun* chapter states: "Shanzhong is the Sea of Qi"; therefore, it is the Hui Point of the Qi.
These Eight Hui Points cannot be verified in the *Nei Jing*, but their principles are extremely profound, undoubtedly originating from ancient medical classics.