微、细、弦、弱、濡、牢、浮、沉、虚、实、滑、涩、洪、伏、缓、迟、数、长、短、芤、革、结、促、紧、散
、动、代
诀以缓为极平脉，余二十六为病脉。定清缓脉，方可定诸病脉；精熟缓脉，即可以知诸病脉。脉之有
缓，犹权度之有定平星也。
缓（和缓也。张太素曰∶“应指和缓，往来甚匀。”杨元操曰∶“如初春杨柳舞风之象”）
四至调和百脉通，浑涵元气此身中。
消融宿疾千般苦，保合先天一点红。
露颗圆匀宜夜月，柳条摇曳趁春风。
欲求极好为权度，缓字医家第一功。
不浮不沉，恰在中取；不迟不数，正好四至。欣欣然、悠悠然、洋洋然，从容柔顺，圆净分明。微于缓者，
即为微；细于缓者，即为细。虚实长短、弦弱滑涩，无不皆然。至于芤革紧散、濡牢洪伏、促结动代，以缓
为权度，尤其显而易见者也。
四时之脉，和缓为宗，缓即为有胃气也。万物皆生于土,久病而稍带一缓字，是为有胃气，其生可预卜耳。
（统六脉而言，不得独诊右关。）
无病之脉，不求神而神在，缓即为有神也。方书乃以有力训之，岂知有力，未必遂为有神，而有神正不定在有力。
精熟缓字，自知所别裁。
Wei (Thready), Xi (Fine), Xian (Wiry), Ruo (Weak), Ru (Soggy), Lao (Deep and Firm), Fu (Floating), Chen (Deep), Xu (Deficient), Shi (Excess), Hua (Slippery), Se (Choppy), Hong (Surging), Fu (Hidden), Huan (Lax), Chi (Slow), Shu (Rapid), Chang (Long), Duan (Short), Kou (Scallion Stalk), Ge (Taut), Jie (Knotted), Cu (Hasty), Jin (Tight), San (Scattered), Dong (Moving), Dai (Intermittent).
The verse states: "Huan" pulse is the extremely normal pulse, while the remaining twenty-six are pathological pulses. Only by clarifying the Huan pulse can one determine the various pathological pulses; only by mastering the Huan pulse can one understand the various pathological pulses. The presence of a Huan pulse in the pulse diagnosis is like having a fixed standard mark on a steelyard balance.
Huan (Meaning harmonious and relaxed. Zhang Taisu said: "It feels harmonious and relaxed under the fingers, with smooth and uniform flow." Yang Yuancuo said: "Like the image of willow branches dancing in the wind in early spring.")
When four breaths per respiration are harmonious, all vessels are unobstructed; the encompassing primordial Qi resides within this body.
It dissolves the myriad sufferings of chronic diseases and preserves the single spot of congenital true Yang.
Round and even like dewdrops under the night moon, swaying gently like willow twigs in the spring breeze.
If one seeks an excellent standard for measurement, mastering the character "Huan" is the primary skill for physicians.
Neither floating nor deep, it appears precisely when palpating at the middle level; neither slow nor rapid, it has exactly four beats per respiration. It appears joyful, leisurely, and abundant, calm and gentle, round and clear. Slightly weaker than Huan is Wei (Thready); slightly finer than Huan is Xi (Fine). This applies to all pulses such as Xu (Deficient), Shi (Excess), Chang (Long), Duan (Short), Xian (Wiry), Ruo (Weak), Hua (Slippery), and Se (Choppy). Regarding Kou (Scallion Stalk), Ge (Taut), Jin (Tight), San (Scattered), Ru (Soggy), Lao (Deep and Firm), Hong (Surging), Fu (Hidden), Cu (Hasty), Jie (Knotted), Dong (Moving), and Dai (Intermittent) pulses, using Huan as the standard for comparison is particularly obvious.
The pulses of the four seasons take harmony and relaxation as their root; Huan indicates the presence of Stomach Qi (Wei Qi). All things are born from Earth; if a patient with a long-standing illness shows even a slight trace of Huan in the pulse, it indicates the presence of Stomach Qi, and survival can be predicted. (This refers to the six positions collectively; one must not examine only the Right Guan position.)
For a healthy person, Spirit (Shen) is present without seeking; Huan indicates the presence of Spirit. Medical texts often interpret it as "forceful," but how could they know that forcefulness does not necessarily imply Spirit, and Spirit does not necessarily manifest as forcefulness. By thoroughly mastering the concept of "Huan," one naturally knows how to distinguish and judge correctly.
Burn incense, sit cross-legged in meditation, calm the Qi, and concentrate the Shen. Recite the character "Huan" aloud, contemplate it in mind, and explore it with the hand. Repeat and study it in detail; after a long time, the sensation of Huan will reside in the fingertips. Using this as a standard to measure other pulses allows one to understand the condition clearly and easily.