体象 迟脉属阴，象为不及；往来迟慢，三至一息。
主病 迟脉主藏，其病为寒。寸迟上寒，心痛停凝。关迟
中寒， 结挛筋。尺迟火衰，溲便不禁；或病腰足，疝痛牵阴。
兼脉 有力积冷，无力虚寒。浮迟表冷，沉迟里寒。迟涩血少，迟缓湿寒。迟滑胀满，迟微难安。
【按】迟之为义，迟滞而不能中和也。脉以一息四至为和平，若一息三至，则迟而不及矣。阴性
多滞，故阴寒之症，脉必见迟也。譬如太阳隶于南陆，则火度而行数；隶于北陆，则水度而行迟，即此可以
征阴阳迟速之故矣。伪诀云∶“重手乃得”，是沉脉而非迟矣。又云∶“状且难”，
是涩脉而非迟矣。一息三至，甚为分明，而误云“隐隐”，是微脉而非迟矣。迟而不流利，则为涩脉。迟
而有歇止，则为结脉。迟而浮大且软，则为虚脉。至于缓脉，绝不相类。夫缓以脉形之宽缓得名，迟以至数之
不及为义，故缓脉四至，宽缓和平，迟脉三至，迟滞不前，然则二脉各别，又安足溷哉！以李濒湖之通达，
亦云“小快于迟作缓持”，以至数论缓脉，是千虑之一失也。
王叔和曰∶“一呼一至曰离经，二呼一至曰夺精，三呼一至曰死，四呼一至曰命绝，此损之脉也。
一损损于皮毛，二损损于血脉，三损损于肌肉，四损损于筋，五损损于骨。”是知脉之至数愈迟，则症之
阴寒益甚矣。
[Pulse Image] Chi pulse (Slow Pulse) belongs to Yin; its image manifests as insufficient frequency. The pulse comes and goes slowly, beating three times per respiration cycle.
[Main Diseases] Chi pulse primarily indicates Zang organ diseases, with the pathological nature being Cold. A Chi pulse at the Cun position indicates Upper Jiao Cold, causing heart pain and stagnation. A Chi pulse at the Guan position indicates Middle Jiao Cold, leading to Qi knotting and tendon spasms. A Chi pulse at the Chi position indicates Fire Decline (Mingmen Fire Deficiency), resulting in incontinence of urine and feces; or it may indicate diseases of the waist and feet, with hernia pain radiating to the yin region.
[Combined Pulses] If the Chi pulse is forceful, it indicates Accumulated Cold (Cold accumulation); if it is weak, it indicates Deficient Cold. A Floating-Chi pulse indicates Exterior Cold; a Deep-Chi pulse indicates Interior Cold. A Choppy-Slow pulse indicates Blood Deficiency; a Slow-Relaxed pulse indicates Damp-Cold. A Slippery-Slow pulse indicates Distension and Fullness; a Faint-Slow pulse indicates critical illness and distress.
[Commentary] The meaning of "Chi" refers to sluggishness that fails to achieve harmony. A healthy pulse beats four times per respiration cycle; if it beats only three times, it is considered Chi (Slow) and represents insufficiency. Yin energy tends to stagnate; therefore, in Yin-Cold syndromes, the pulse must manifest as Chi. For example, when the Sun travels through the Southern Land, it passes through the Fire degree and moves quickly; when it travels through the Northern Land, it passes through the Water degree and moves slowly. This illustrates the reasons for the speed variations caused by Yin and Yang. A spurious prescription states: "It can only be felt with heavy pressure," which describes a Shen pulse (Deep Pulse) rather than a Chi pulse. It also states: "The shape is difficult," which describes a Se pulse (Choppy Pulse) rather than a Chi pulse. Three beats per respiration are clearly defined, yet erroneously described as "faint/hidden," which characterizes a Wei pulse (Faint Pulse) rather than a Chi pulse. A Chi pulse that is not smooth is a Se pulse. A Chi pulse with intermittent pauses is a Jie pulse (Knotted Pulse). A Chi pulse that is floating, large, and soft is a Xu pulse (Deficient Pulse). As for Huan pulse (Slow-Relaxed Pulse), it is completely different. Huan pulse derives its name from its broad and relaxed shape, while Chi pulse is defined by its insufficient frequency. Thus, Huan pulse beats four times per respiration, appearing broad, relaxed, and peaceful; Chi pulse beats three times per respiration, appearing sluggish and stagnant. Therefore, these two pulses are distinct and should not be confused. Even Li Binhu (Li Shizhen), known for his profound understanding, stated that "Huan pulse is slightly faster than Chi pulse," discussing Huan pulse based on frequency, which was a lapse in judgment.
Wang Shuhe said: "One beat per exhalation is called Li Jing (Departing from the Normal); two beats per exhalation is called Duo Jing (Loss of Essence); three beats per exhalation is Death; four beats per exhalation is Life Extinction. These are pulses of Damage (Sun). First damage affects the skin and hair; second damage affects the blood vessels; third damage affects the muscles; fourth damage affects the tendons; fifth damage affects the bones." From this, we know that the slower the pulse frequency, the more severe the Yin-Cold pathology.