诸本无篇字。马云。营者运也。脉之营行有五十度。故名篇。
天周二十八宿 甲乙作周天。简案、详见卫气行篇。
人气行一周 周、甲乙作 。楼氏云。人气行一周之下。当有与十分身之八六字。千八分之上。
当有宿字。下当有人气行五十周于身八字。盖天周二十八宿。宿三十六分。人气行一周于身。与十分身之八。
宿三百六十分。人气行一十八周于身。宿千八分。人气行五十周于身也。简案、楼说本于卫气行篇。
千八分 张云。以周天二十八宿。宿三十六分相因。共得一千零八分。人之脉气。
昼夜营运一周。亦合此数。马云。积而推之。十宿得三百六十分。二十宿得七百二十分。八宿三八得
二百四十分。
六八得四十八分。共得一千八分。
日行二十八宿 甲乙无此六字。似是。
二十八脉 马云。十二经有十二脉。而左右相同。则为二十四脉。加以阳跷、阴跷、督脉、任脉。
共计二十八脉。以应天之二十八宿。以分昼夜之百刻也。
漏水下百刻 日知录云。周礼 壶氏注。漏箭昼夜共百刻。礼记。乐记百度得数而有常。注。百度
百刻也。灵枢经漏水下百刻。以分昼夜。说文。漏以铜受水刻箭昼夜百节。隋书天文志。昔黄帝创观漏水。制
品取则。以分昼夜。其后因以命官。周礼 壶氏。则其职也。其法总以百刻分于昼夜。
气行六尺日行二分 气、甲乙作脉。六尺下。楼补二十七息气行一丈六尺二寸十二字。马云。积至十
息。则其脉气行六尺。而天之日其行为七厘五毫。按、正文本云。二分。今细推之。其所谓二分者误也。假如
曰二分。则百息当行二十分。千息当行二百分。万息当行二千分。加三千五百息。又当行七百分。原数止得一
千八分。今反多得一千六百九十二分。想此经向无明注。遂致误传未正。今考其数。当云日行七厘半。则一万
三千五百息。正合日行一千八分之数。张云。其日行之数。当以每日千八分之数为实。以一万三千五百息为法
除之。则每十息日行止七厘四毫六丝六忽不尽。此云日行二分者。传久之误也。
二百七十息（止）日行二十五分 甲乙。二十五分作二十分有奇。楼以五字为衍。马云。其下水计
二刻。日行二十分一厘二毫。按、正文曰。二十五分者。盖误写一厘二毫为五分也。张云。凡一百三十五息。
水下一刻之度也。人气当半周于身。脉行八丈一尺。故二百七十息。气行于身一周。水
下当二刻。日行当得二十分一厘六毫为正。
五百四十息（止）日行四十分 甲乙分下有有奇二字。马云。下水四刻。日行四十分二厘二毫。正文缺
二厘二毫。张云。气行一周。脉行三十二丈四尺。日行当得四十分三厘二毫为正。上文言二十五分者太多。本
节言四十分者太少。此其所以有误也。
二千七百息（止）五宿二十分 甲乙二十五分作二十分有奇。马云。日行五宿二十一分六厘。正文缺一
分六厘。自此以下。当云五千四百息。气行二十周于身。下水四十刻。日行十一宿七分二厘。又当云八千一百
息。气行三十周于身。下水六十刻、日行十六宿二十八分八厘。又当云一万八百息。气行四十周于身。下水八
十刻。日行二十二宿一十四分四厘。
皆尽脉终矣 甲乙注王 曰。此略而言之也。细言之。则常以一千周加一分。又十分分之六。乃奇分
尽也。
并行一数也 张云。此释上文交通二字之义。并行一数。谓并二十八脉通行一周之数也。
凡行八百一十丈也 甲乙。凡上有气字。也下有一日一夜五十营。以营五脏之精。不应数者。谓之狂
生。所谓五十营者。五脏皆受气也。三十三字。注云。此段旧在经脉根结之末。今移在此。
各版本中均无“篇”字。马云说：营，就是运行之意。脉气在体内运行五十周，因此以此命名本篇。
天体圆周包含二十八宿（天空中划分的二十八个星区）。《甲乙经》作“周天”。简按：详细内容详见《卫气行》篇。
人气在体内运行一周。此处“周”字，《甲乙经》作“周”。楼氏说：在“人气行一周”之下，应当有“与十分身之八”这六个字；在“千八分”之上，应当有“宿”字；在下文应当有“人气行五十周于身”这八个字。大概是因为天体圆周有二十八宿，每宿三十六分，人气在体内运行一周，相当于身体长度的十分之八。二十八宿共三百六十分，人气在体内运行十八周，对应一千零八分，人气在体内运行五十周。简按：楼氏的说法源于《卫气行》篇。
一千零八分。张云说：以周天二十八宿，每宿三十六分相乘，共得一千零八分。人的脉气昼夜营运一周，也符合这个数目。马云说：累计推算，十宿得三百六十分，二十宿得七百二十分，八宿三八得二百四十分，六八得四十八分，共计一千零八分。
太阳运行经过二十八宿。《甲乙经》没有这六个字。这似乎是正确的。
二十八脉。马云说：十二经脉各有左右两条脉，所以是二十四脉。加上阳跷脉、阴跷脉、督脉、任脉，共计二十八脉，以对应天上的二十八宿，并用来划分昼夜的一百刻。
漏壶滴水一百刻。《日知录》说：《周礼·壶氏》注解说，漏箭昼夜共一百刻。《礼记·乐记》说：“百度得数而有常。”注解说：“百度即百刻。”《灵枢经》用漏水滴下一百刻来划分昼夜。《说文解字》说：漏是用铜器盛水，刻箭上刻度，昼夜共有一百节。《隋书·天文志》说：从前黄帝创立观测漏壶的方法，制定标准，用来划分昼夜。后来因此设立官职。《周礼·壶氏》，就是负责这一职务的人。其方法总共将一百刻分配给昼夜。
脉气运行六尺，太阳运行二分。这里的“气”，《甲乙经》作“脉”。在“六尺”之下，楼氏补入“二十七息气行一丈六尺二寸”十二个字。马云说：累计到十息，脉气运行六尺，而太阳的运行轨迹为七厘五毫。按：正文原文说是“二分”。现在仔细推算，所谓的“二分”是错误的。假如太阳运行二分，那么一百息应当运行二十分，一千息应当运行二百分，一万息应当运行二千分。再加上三千五百息，又应当运行七百分。原本总数只有一千零八分，现在反而多出了一千六百九十二分。猜想这部经典向来没有明确的注释，导致误传未能纠正。现在考证其数值，应当说是太阳运行七厘半，那么一万三千五百息，正好符合太阳运行一千零八分的数值。张云说：太阳运行的数值，应当以每日一千零八分为实数，以一万三千五百息为除数进行除法运算，那么每十息太阳仅运行七厘四毫六丝六忽还多一点。这里说太阳运行二分，是流传久远的错误。
二百七十息（止），太阳运行二十五分。《甲乙经》中，“二十五分”作“二十分有奇”。楼氏认为“五”字是衍文。马云说：此时漏壶水下计为二刻，太阳运行二十分一厘二毫。按：正文说“二十五分”，大概是误将一厘二毫写成了五分。张云说：凡是一百三十五息，是水下刻一度的度数。人气应当在体内运行半周，脉气运行八丈一尺。所以二百七十息，气在体内运行一周，水下应当是二刻，太阳运行应当以二十分一厘六毫为正。
五百四十息（止），太阳运行四十分。《甲乙经》中“分”字下有“有奇”二字。马云说：此时漏壶水下四刻，太阳运行四十分二厘二毫。正文缺少“二厘二毫”。张云说：气运行一周，脉气运行三十二丈四尺，太阳运行应当以四十分三厘二毫为正。上文说的二十五分太多，本节说的四十分太少，这就是有误的原因。
二千七百息（止），五宿二十分。《甲乙经》中“二十五分”作“二十分有奇”。马云说：太阳运行五宿二十一分六厘。正文缺少一分六厘。从此以下，应当说五千四百息，气在体内运行二十周，漏壶水下四十刻，太阳运行十一宿七分二厘。又应当说八千一百息，气在体内运行三十周，漏壶水下六十刻，太阳运行十六宿二十八分八厘。又应当说一万八百息，气在体内运行四十周，漏壶水下八十刻，太阳运行二十二宿十四分四厘。
都结束了，脉气终了。《甲乙经》注引王冰说：这是粗略而言。详细来说，则是常以一千周加一分，又是十分之六，这才是奇分的尽头。
并行是一个数。张云说：这是解释上文“交通”二字的含义。“并行一数”，是指并二十八脉通行一周的数目。
总共运行八百一十丈。《甲乙经》中，“凡”字上有“气”字。“也”字下有“一日一夜五十营，以营五脏之精。不应数者，谓之狂生。所谓五十营者，五脏皆受气也”三十三字。注解说：这段文字旧时在《经脉根结》篇末，现在移到这里。
All versions lack the character "Pian" (Chapter). Ma Yun states: Ying (Nutritive Qi/Vascular circulation) means movement. The vessels circulate fifty times, hence the chapter title.
The celestial circumference comprises twenty-eight mansions (constellations/asterisms in traditional Chinese astronomy). The *Jia Yi Jing* reads "Zhou Tian" (Celestial Sphere). Jian's note: Detailed descriptions are found in the *Wei Qi Xing* (Movement of Defensive Qi) chapter.
Human Qi completes one cycle within the body. Here, "Zhou" (Cycle) is written as "Zhou" in the *Jia Yi Jing*. Lou's commentary suggests that below "Human Qi completes one cycle," there should be the six characters "corresponding to eight-tenths of the body length"; above "one thousand and eight fen," there should be the character "Su" (Mansion); and below, there should be the eight characters "Human Qi completes fifty cycles in the body." This is likely because the celestial sphere has twenty-eight mansions, each containing thirty-six fen. Human Qi completing one cycle in the body corresponds to eight-tenths of the body length. Twenty-eight mansions total three hundred and sixty fen; Human Qi completing eighteen cycles in the body corresponds to one thousand and eight fen; Human Qi completing fifty cycles in the body [completes the calculation]. Jian's note: Lou's theory is based on the *Wei Qi Xing* chapter.
One thousand and eight fen. Zhang Yun states: Multiplying the twenty-eight mansions of the celestial sphere by thirty-six fen per mansion yields one thousand and eight fen. The human vessel Qi circulates once day and night, conforming to this number. Ma Yun calculates: Accumulating and deducing, ten mansions yield three hundred and sixty fen; twenty mansions yield seven hundred and twenty fen; eight mansions (8x30) yield two hundred and forty fen; six mansions (6x8) yield forty-eight fen. Totaling one thousand and eight fen.
The sun travels through twenty-eight mansions. These six characters are absent in the *Jia Yi Jing*, which seems correct.
Twenty-eight vessels. Ma Yun states: The twelve primary meridians have left and right counterparts, totaling twenty-four vessels. Adding the Yang Qiao vessel, Yin Qiao vessel, Du Mai (Governing Vessel), and Ren Mai (Conception Vessel) brings the total to twenty-eight vessels, corresponding to the twenty-eight celestial mansions and dividing the hundred ke (water clock units) of day and night.
The water clock drips one hundred ke. The *Ri Zhi Lu* cites the commentary on *Zhou Li - Hu Shi*: The leakage arrow measures one hundred ke for day and night combined. The *Li Ji - Yue Ji* states: "The hundred degrees obtain their measure with constancy." The commentary explains: "Hundred degrees refers to one hundred ke." The *Ling Shu* uses the dripping of one hundred ke from the water clock to divide day and night. The *Shuo Wen Jie Zi* states: The clepsydra uses a copper vessel to hold water, with an arrow marked with divisions for day and night, totaling one hundred sections. The *Sui Shu - Tian Wen Zhi* states: In ancient times, Huang Di created the method of observing the water clock, establishing standards to divide day and night. Later, official positions were established for this purpose. The *Zhou Li - Hu Shi* refers to the official responsible for this duty. The method generally divides one hundred ke between day and night.
Vessel Qi travels six chi; the sun travels two fen. Here, "Qi" is written as "Mai" (Vessel) in the *Jia Yi Jing*. Below "six chi," Lou inserts the twelve characters "twenty-seven breaths, Qi travels one zhang six chi two cun." Ma Yun states: Accumulating to ten breaths, the vessel Qi travels six chi, while the sun's motion is seven li five hao. Note: The main text says "two fen." Upon careful deduction, the so-called "two fen" is erroneous. If the sun traveled two fen, then at one hundred breaths it would travel twenty fen; at one thousand breaths, two hundred fen; at ten thousand breaths, two thousand fen. Adding three thousand five hundred breaths, it would travel another seven hundred fen. The original total is only one thousand and eight fen, yet here it exceeds by one thousand six hundred and ninety-two fen. It is presumed that this classic lacked clear annotations historically, leading to uncorrected transmission errors. Current calculations suggest it should read "the sun travels seven li half." Then, thirteen thousand five hundred breaths perfectly match the sun's travel of one thousand and eight fen. Zhang Yun states: The sun's distance should be calculated by taking one thousand and eight fen as the dividend and thirteen thousand five hundred breaths as the divisor. Thus, every ten breaths, the sun travels only seven li four hao six si six hu, with a remainder. The statement that the sun travels two fen is an error propagated over time.
Two hundred and seventy breaths (up to), the sun travels twenty-five fen. The *Jia Yi Jing* reads "twenty fen plus a fraction" instead of "twenty-five fen." Lou considers the character "five" as superfluous. Ma Yun states: At this point, the water clock registers two ke, and the sun travels twenty fen one li two hao. Note: The main text says "twenty-five fen," likely due to a scribal error writing one li two hao as five fen. Zhang Yun states: One hundred and thirty-five breaths correspond to the depth of one ke of water. Human Qi should complete half a cycle in the body, and vessel Qi travels eight zhang one chi. Therefore, at two hundred and seventy breaths, Qi completes one cycle in the body, the water clock drops two ke, and the sun's travel should correctly be twenty fen one li six hao.
Five hundred and forty breaths (up to), the sun travels forty fen. The *Jia Yi Jing* adds the characters "plus a fraction" after "fen." Ma Yun states: The water clock registers four ke, and the sun travels forty fen two li two hao. The main text omits "two li two hao." Zhang Yun states: Qi completes one cycle, vessel Qi travels thirty-two zhang four chi, and the sun's travel should correctly be forty fen three li two hao. The previously mentioned twenty-five fen was too much; the forty fen mentioned here is too little; this is the source of the error.
Two thousand seven hundred breaths (up to), five mansions twenty fen. The *Jia Yi Jing* reads "twenty fen plus a fraction" instead of "twenty-five fen." Ma Yun states: The sun travels five mansions twenty-one li six cun. The main text omits "one li six cun." From this point onward, it should state: Five thousand four hundred breaths, Qi completes twenty cycles in the body, the water clock drops forty ke, and the sun travels eleven mansions seven fen two li. It should further state: Eight thousand one hundred breaths, Qi completes thirty cycles in the body, the water clock drops sixty ke, and the sun travels sixteen mansions twenty-eight fen eight li. It should finally state: Ten thousand eight hundred breaths, Qi completes forty cycles in the body, the water clock drops eighty ke, and the sun travels twenty-two mansions fourteen fen four li.
All are exhausted, and the vessel Qi terminates. The *Jia Yi Jing* annotation quoting Wang Bing states: This is stated roughly. In detail, it is always one thousand cycles plus one fen, and six-tenths of a fen, which constitutes the end of the fractional remainder.
Simultaneous circulation constitutes one number. Zhang Yun states: This explains the meaning of the term "jiao tong" (intercommunication) in the preceding text. "Bing xing yi shu" (simultaneous circulation as one count) refers to the number of cycles completed by all twenty-eight vessels together.
Totaling eight hundred and ten zhang. The *Jia Yi Jing* adds the character "Qi" before "Fan" (Total). After "Ye" (particle), it adds thirty-three characters: "In one day and night, fifty circuits (Ying) occur, nourishing the essence of the five Zang organs. Those not conforming to this number are called 'Kuang Sheng' (mad births/abnormalities). What is meant by fifty circuits is that the five Zang organs all receive Qi." The annotation notes: This passage was originally at the end of the *Jing Mai Gen Jie* (Meridian Roots and Knots) section and has been moved here.