（灵枢九针十二原篇）
黄帝曰∶愿闻五脏六腑所出之处。（言脉气所出之处也。）岐伯曰∶五脏五 ，五五二十五 ；六腑六 ，六六三十
六。（五 ，即各经井荥 经合穴，皆谓之 。六腑复多一原穴，故各有六 。）经脉十二，络脉十五，凡二十七气以
上下。（脏有五，腑有六，而复有手厥阴心主一经，是为十二经。十二经各有络脉，如手太阴别络在列缺之类是也。此外
又有任脉之络曰屏翳，督脉之络曰长强，脾之大络曰大包，共为十五络。十二、十五，总二十七气，以通周身上下也。）
所出为井，（脉气由此而出，如井泉之发，其气正深也。）所溜为荥，（急流曰溜。小水曰荥。脉出于井而溜于荥，其气尚
微也。溜，力救切。荥，盈、荣二音。）所注为 ，（注，灌注也。 ，输运也。脉注于此而输于彼，其气渐盛也。）所行
为经，（脉气大行，经营于此，其气正盛也。）所入为合，（脉气至此，渐为收藏，而入合于内也。）二十七气所行，皆在
五也。（二十七经络所行之气，皆在五 之间也。）节之交，三百六十五会，知其要者，一言而终，不知其要，流散无
穷。（人身气节之交，虽有三百六十五会，而其要则在乎五 而已。故知其要，则可一言而终；否则流散无穷，而莫得其
绪矣。）所言节者，神气之所游行出入也，非皮肉筋骨也。（神气之所游行出入者，以穴俞为言也，故非皮肉筋骨之谓。
知邪正之虚实而取之弗失，即所谓知要也。小针解曰∶节之交三百六十五会者，络脉之渗灌诸节者也。即此神气之义。）
（《灵枢·九针十二原》篇）
黄帝说：我想听听五脏六腑经脉之气发出的部位。（这是指脉气所发出的部位。）
岐伯说：五脏各有五个穴位，五五相乘共二十五个；六腑各有六个穴位，六六相乘共三十六个。（这五个穴位，就是各经的井穴、荥穴、输穴、经穴、合穴，都称为“腧”。六腑多出一个原穴，所以各有六个穴位。）
手三阴经、手三阳经、足三阴经、足三阳经，加上手厥阴心包经，共十二条经脉。十五络脉。总共二十七条气脉贯通于周身上下。（脏有五个，腑有六个，再加上手厥阴心主这一条经，这就是十二经。十二经每条经都有络脉，例如手太阴肺经的别络在列缺穴之类。此外还有任脉的络脉叫屏翳，督脉的络脉叫长强，脾的大络叫大包，总共构成十五络。十二经加十五络，共计二十七气，用来贯通全身上下。）
脉气发出的地方叫作“井”，（脉气从这里发出，像井泉涌出一样，其气正深。）脉气流动的地方叫作“荥”，（急流叫做溜。小水沟叫做荥。脉气从井穴流出而流入荥穴，其气还微弱。溜，读音为力救切。荥，有盈、荣两个读音。）脉气灌注的地方叫作“输”，（注，是灌注的意思。输，是输运的意思。脉气灌注于此并输运到彼处，其气逐渐旺盛。）脉气运行的地方叫作“经”，（脉气在此盛大运行，经营于此，其气正旺盛。）脉气汇入的地方叫作“合”，（脉气到达这里，逐渐收藏，而汇入内部。）这二十七条气脉的运行，都包含在这五个穴位之中。（二十七条经络运行的气，都在井、荥、输、经、合这五个穴位之间。）
关节交会之处，共有三百六十五个会穴，懂得其中要领的人，一句话就能概括终结；不懂得其中要领的人，就会散乱无穷。（人身气节交会之处，虽然有三百六十五个会穴，但其要领就在于这五个穴位罢了。所以懂得要领，就可以一言以蔽之；否则就会散乱无穷，找不到头绪了。）所说的“节”，是指神气游行出入的地方，并不是指皮肉筋骨。（所谓神气游行出入，是指腧穴而言，所以不是指皮肉筋骨。知道邪正的虚实而取穴不失当，就是所谓的懂得要领。《小针解》说：关节交会处的三百六十五个会穴，是络脉渗灌各个关节的地方。也就是这个神气的含义。）
(Lingshu, Chapter 9: Nine Needles and Twelve Origins)
Huangdi said: I wish to hear about the locations where the qi of the five zang organs and six fu organs originates. (This refers to the locations where the meridian qi emerges.)
Qibo replied: Each of the five zang organs has five acupoints, totaling twenty-five (5 × 5 = 25); each of the six fu organs has six acupoints, totaling thirty-six (6 × 6 = 36). (These five acupoints refer to the Jing-Well [Jingqu], Ying-Spring [Yingqu], Shu-Stream [Shuqu], Jing-River [Jingqu], and He-Sea [Hequ] points of each meridian, collectively referred to as "Shu" [Transport Points]. The six fu organs have one additional Yuan-Source [Yuanqu] point, hence they each have six points.)
There are twelve main meridians and fifteen collaterals, making a total of twenty-seven qi pathways circulating throughout the upper and lower body. (There are five zang and six fu organs, plus the Hand Jueyin Pericardium meridian, constituting the twelve meridians. Each of the twelve meridians has a collateral; for example, the divergent collateral of the Hand Taiyin Lung Meridian is at Lieque [LU7]. Additionally, there is the Pingyi [Baihui area/Conception Vessel collateral], the Changqiang [GV1] of the Du Meridian, and the Dabao [SP21] of the Spleen's great collateral, totaling fifteen collaterals. The twelve meridians and fifteen collaterals sum up to twenty-seven qi pathways, which connect the entire body.)
The point where the qi emerges is called the Jing-Well [Jingqu] [Spring Point], (Meridian qi emerges from here, like water springing from a well, with deep qi.) The place where the qi flows is called the Ying-Spring [Yingqu] [Spring Point], (Rapid flow is called "liu". A small stream is called "ying". Qi flows out from the Jing-Well and trickles into the Ying-Spring, where its qi is still slight. "Liu" is pronounced li-jiu. "Ying" has pronunciations ying and rong.) The place where the qi pours is called the Shu-Stream [Shuqu] [Stream Point], ("Zhu" means pouring. "Shu" means transporting. Qi pours here and transports there, and its qi gradually becomes vigorous.) The place where the qi travels is called the Jing-River [Jingqu] [River Point], (Meridian qi travels extensively here, operating within, and its qi is at its peak.) The place where the qi enters is called the He-Sea [Hequ] [Sea Point], (Qi reaches here, gradually storing and entering inwardly.) The circulation of these twenty-seven qi pathways all occurs within these five types of points. (The qi circulated by the twenty-seven meridians resides between these five categories of points.)
At the intersections of joints, there are three hundred and sixty-five meeting points. One who understands the essence can summarize it in a single statement; one who does not understand the essence will find it scattered and endless. (Although there are three hundred and sixty-five meeting points at the intersections of human body qi joints, the essence lies in these five points. Thus, understanding the essence allows one to conclude with a single word; otherwise, it becomes scattered and endless without finding the thread.) What is meant by "joints" here is the place where divine qi [shenqi] circulates and enters/exits, not referring to skin, flesh, sinews, or bones. (What circulates and enters/exits is the divine qi, referring to the acupoints/shu points, thus not referring to physical tissues like skin, flesh, sinews, or bones. Knowing the deficiency and excess of pathogenic and righteous qi to select points accurately is what is meant by understanding the essence. The Xiao Zhen Jie [Explanation of the Small Needle] states: The three hundred and sixty-five meeting points at joint intersections are where collaterals seep and irrigate various joints. This is the meaning of divine qi.)