黄帝曰。经脉十二。而手太阴足少阴阳明独动不休。何也。岐伯曰。是明胃脉也。（言诸动脉皆胃气所贯也故下文三
项皆跟定胃字）胃为五脏六腑之海。其清气上注于肺。肺气从太阴而行之其行也。以息往来。故人一呼脉再动。一吸脉
亦再动。呼吸不已。故动而不止。黄帝曰。气之过于寸口也。上出焉息。下入焉伏。（出入原作十八今从甲乙经改）何道
从还。不知其极。岐伯曰。气之离脏也。卒然如弓弩之发。如木之下。岸上于鱼以反衰。其余气衰散以逆上。故其行微。
黄帝曰。足之阳明。何因而动。岐伯曰。胃气上注于肺。其悍气上冲头者。循咽。上走空窍。循眼系。入络脑。出 。
下客主人。循牙车。合阳明。并下人迎。此胃气别走于阳明者也。故阴阳上下。其动也。若一故阳病而阳脉小者。为逆
阴病而阴脉大者。为逆。故阴阳俱静。俱动。若引绳相倾者病。黄帝曰。足少阴何因而动。岐伯曰。冲脉者。十二经之
海也。与少阴之大络。起于肾。下出于气街。循阴股内廉。邪入 中。循胫骨内廉。并少阴之经。下入内踝之后。入足
下。其别者。邪入踝。出属跗上。入大趾之间。注诸络以温足胫。此脉之常动者也。黄帝曰。营卫之行也。上下相贯。
如环之无端。今有其卒然遇邪气及逢大寒。手足懈惰。其脉阴阳之道。相输之会。行相失也。气何由还。岐伯曰。夫四
末阴阳之会者。此气之大络也。四街者。气之径路也。故络绝。则径通四末解。则气从合相输如环。黄帝曰。善。此所
谓如环无端。莫知其纪。终而复始。此之谓也。
前三节分叙脉气之源流。后节总叙经气之变。气充词沛机神流畅。据此则人迎果绑定喉两旁动脉矣。与寸口分阴阳。
以大小分顺逆。后世实难遵用。
Huangdi said: Among the twelve meridians, only the Hand-Taiyin (Lung) and Foot-Shaoyin (Kidney), Foot-Yangming (Stomach) meridians pulse continuously without rest. Why is this so?
Qibo replied: This is because they reflect the Stomach Qi. (This implies that all pulsating arteries are permeated by Stomach Qi; hence, the following three sections all center on the character "Stomach".) The Stomach is the sea of the five zang organs and six fu organs. Its clear and subtle essence ascends to pour into the Lungs. Lung Qi travels along the Hand-Taiyin meridian. Its movement comes and goes with respiration. Therefore, with each exhalation, the pulse beats twice; with each inhalation, the pulse also beats twice. As long as respiration does not cease, the pulse continues to beat.
Huangdi said: When Qi overflows at the Cun Kou (Radial Artery) point, it emerges upward toward the throat (originally "shi ba", corrected here from *Jia Yi Jing* to "yan xi") and sinks downward into the interior (originally "shi ba", corrected here from *Jia Yi Jing* to "yan fu"). Through what pathway does it return? I do not understand its limits.
Qibo replied: When Qi departs from the Zang organs, it moves suddenly and swiftly like an arrow released from a crossbow, or like a tree falling from a height. By the time it reaches the Yu Ji area, its momentum declines; the remaining Qi scatters and flows upward in reverse, so its movement becomes faint.
Huangdi said: What causes the Foot-Yangming (Stomach) meridian to pulse continuously?
Qibo replied: Stomach Qi ascends to pour into the Lungs. Its fierce and vigorous Qi rushes upward to the head, traveling along the pharynx, ascending into the orifices, following the optic system, entering the brain to connect with it, emerging from the nape, descending past the Ke Zhu Ren point (Shangguan), following the jaw angle (Ya Che), merging with the Foot-Yangming meridian, and descending further to the Ren Ying point. This is how Stomach Qi takes a separate route to the Yangming meridian. Thus, whether in Yin or Yang, upper or lower, their pulsation follows a consistent pattern. Therefore, if Yang disease presents with a small Yang pulse, it is a counterflow (Ni); if Yin disease presents with a large Yin pulse, it is also a counterflow. If both Yin and Yang pulses are still, or both are hyperactive, and they tilt against each other like a taut rope, this indicates disease.
Huangdi said: What causes the Foot-Shaoyin (Kidney) meridian to pulse continuously?
Qibo replied: Chong Mai (Penetrating Vessel) is the sea of the twelve meridians. It connects with the large collateral of the Foot-Shaoyin meridian, originating in the Kidneys, descending to emerge at the Qi Jie point, running along the medial aspect of the thigh, obliquely entering the popliteal fossa, following the medial aspect of the tibia, running parallel with the Foot-Shaoyin meridian, descending behind the medial malleolus, and entering the sole of the foot. A branch obliquely enters the ankle, emerges on the dorsum of the foot, enters between the great toe, and pours into the various collaterals to warm the legs and feet. This is the normal pulsation of this vessel.
Huangdi said: Ying Qi (Nutritive Qi) and Wei Qi (Defensive Qi) circulate up and down, interweaving like a circle without beginning or end. Now, if one encounters sudden pathogenic factors or severe cold, leading to flaccidity and weakness of the limbs, the pathways of Yin and Yang in the pulses, and the points of transmission and convergence, become disordered. How does Qi return to circulation?
Qibo replied: The four extremities are where Yin and Yang Qi converge; these are the major collaterals of Qi. The Si Jie (Four Streets: Head, Chest, Abdomen, Legs) are the direct routes of Qi. Therefore, if the collaterals are blocked, the direct routes remain open; if the limbs are weak, Qi gathers from the convergence points and circulates like a circle.
Huangdi said: Excellent. This is what is meant by "like a circle without end," having no known start or finish, ending only to begin again. This is precisely what is described.
The first three sections separately narrate the source and flow of pulse Qi, while the final section summarizes the changes of meridian Qi. The prose is vigorous, the mechanism profound, and the logic fluent. Based on this, the Ren Ying point indeed corresponds to the carotid artery on either side of the throat, distinguishing Yin and Yang from Cun Kou, and determining favorable or unfavorable prognoses based on pulse size. It is difficult for later generations to strictly adhere to this usage.