伏沉极为伏，按至骨乃见，或竟有不见者。
动，跳动之意，大惊多见此脉。盖惊则心胸跳突，故脉亦应之而跳突也，必带数，
故上文系之数脉条下。
张仲景曰∶若数脉见于关，（观若字，则关是偶举可知，非动脉止见于关也。）上下无头尾，（状
其圆而突耳，非真上不至寸，下不至尺也。）如豆大，厥厥动摇者，名曰动。
脉之歇止者有三∶
结 脉来迟，时一止而复来者，曰结。如人之徐行而歇也。
促 脉来数，时一止而复来者，曰促。如人之疾行而蹶也。数亦名促，此之促，
指歇至言，须分别观之。
代 结促之止无常数，代之止有常数。（常数，即下文四十动三十动之数。）代，又为更代
之称，别见胃气条，义与此异，须分别观之。
《内经》曰∶脉一日一夜五十营，（营运也。经谓人周身上下，左右前后，凡二十八脉，共长一十
六丈二尺，五十运计长八百一十丈。呼吸定息，脉行六寸，一日夜行八百一十丈，计一万三千五百息。
按此伪说也，人一日夜岂止一万三千五百息哉。）五十动而不一代者，（代，歇至也。）五脏皆受气。
四十动一代者，一脏无气。（肾气先尽也。其吸不能至肾，止至肝而还。景岳曰∶观此，则下
文所谓二脏
三脏云云者，当自远而近，以次而短，由肾而肝而脾而心而肺。故凡病将死者，必气促，
仅呼吸于胸中数寸之间而
已。）三十动一代者，二脏无气。二十动一代者，三脏无气。十动一代者，四脏无气。
不满十动一代者，五脏无气，予之短期。（此皆死在旦夕。而王氏《脉经》谓一脏无气，后四岁死，
二脏无气，后三岁死，云云，恐非。）
Among pulse qualities, the deep and sunken pulses reaching their extreme depth are termed Fu Pulse (伏脉, Fú Mài - Hidden Pulse). It is felt only when pressing down to the bone, or in some cases, it cannot be detected at all.
The Dong Pulse (动脉, Dòng Mài - Moving Pulse) refers to a palpable throbbing sensation. This pulse is commonly seen after severe fright. Since fright causes palpitations and protrusion in the chest and heart region, the pulse responds with a corresponding throbbing movement. It must carry the characteristics of a Rapid Pulse (数脉, Shuò Mài), which is why it was previously categorized under the section on Rapid Pulses.
Zhang Zhongjing stated: "If a Rapid Pulse appears at the Guan position (关部, Guān Bù - Middle Position), [the use of 'if' implies that the Guan position is merely an example, not that the Moving Pulse is exclusive to this location]. Without distinct head or tail above and below [describing its round and protruding shape, not literally meaning it does not extend to the Cun (寸) or Chi (尺) positions], about the size of a bean, trembling and quivering vigorously, this is named the Moving Pulse."
There are three types of pulses with intermittent pauses (歇止, Xiē Zhǐ):
Jie Pulse (结脉, Jié Mài - Knotted Pulse): The pulse arrives slowly and occasionally pauses before resuming. This is called Jie Pulse. It resembles a person walking leisurely who stops to rest.
Cu Pulse (促脉, Cù Mài - Urgent Pulse): The pulse arrives rapidly and occasionally pauses before resuming. This is called Cu Pulse. It resembles a person running quickly who stumbles. Note: A rapid rate alone is also sometimes referred to as "Cu"; here, "Cu" specifically refers to the presence of pauses, so they must be distinguished carefully.
Dai Pulse (代脉, Dài Mài - Intermittent Pulse): The pauses in Jie and Cu pulses occur irregularly, whereas the pauses in Dai Pulse occur at regular intervals. [Regular intervals refer to the counts mentioned later, such as one pause every forty or thirty beats.] "Dai" also signifies succession or replacement. See the section on Stomach Qi for another meaning, which differs from this context; they must be distinguished.
The *Nei Jing* (《黄帝内经》, Huáng Dì Nèi Jīng - Inner Canon of the Yellow Emperor) states: "The pulse circulates fifty times in one day and night. ['Ying' means circulation. The text states that throughout the body, up, down, left, right, front, and back, there are twenty-eight meridians totaling sixteen zhang and two chi in length. Fifty cycles cover a total distance of eight hundred ten zhang. With each breath cycle, the pulse travels six cun. In one day and night, it travels eight hundred ten zhang, accounting for thirteen thousand five hundred breaths. This calculation is considered erroneous; surely a person does not breathe only thirteen thousand five hundred times in a day and night?]." If the pulse beats fifty times without any interruption, it indicates that all five Zang organs have received Qi. If there is one interruption every forty beats, it indicates that one Zang organ lacks Qi (typically implying Kidney Qi is exhausted first. The inhalation fails to reach the Kidneys and returns upon reaching the Liver. Zhang Jingyue said: Based on this, the subsequent mentions of two or three Zang organs lacking Qi should be understood as progressing from distal to proximal, shortening sequentially, starting from the Kidney, then Liver, Spleen, Heart, and Lung. Therefore, those near death invariably suffer from shortness of breath, respiring only within a few cun of the chest). If there is one interruption every thirty beats, it indicates that two Zang organs lack Qi. If there is one interruption every twenty beats, it indicates that three Zang organs lack Qi. If there is one interruption every ten beats, it indicates that four Zang organs lack Qi. If there is an interruption in fewer than ten beats, it indicates that all five Zang organs lack Qi, predicting a short life expectancy [These conditions imply death is imminent. However, Wang Shuhe's *Mai Jing* (Pulse Classic) claims that one Zang lacking Qi leads to death in four years, two Zangs in three years, etc., which is likely incorrect].