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When the pulse appears surging and rapid (Hong Shu), it is not necessarily due to fire pathogen (Huo Xie); when there is originally no distension or stagnation, but the pulse appears wiry and strong (Xian Qiang), it is not internal excess (Nei Shi). With no heat and no distension, how can purgation be used? In such cases, one should follow the deficiency of the syndrome (Zheng) rather than the apparent excess of the pulse. Generally, where pulse and symptoms do not correspond, there must be complexity in the pathology; one must first examine the deficiency to seek the root cause, thus avoiding error. (From *Jingyue Quanshu*)

When pulse and symptoms correspond, diagnosis is easy; when they contradict, it is difficult. Only when the pulse is clear can one differentiate the syndrome; only when the syndrome is true can one administer medicine. The key lies in maintaining an open mind and observing carefully, without adhering to preconceived notions or using patients as test subjects for medication. (From *Wenyi Shure Quan Shu*)

On the Reliability of Pulse Diagnosis

Life and death are matters of great importance to humans. Yet, by merely feeling the subtle movements in the square-inch area of both wrists, one can determine life and death. This seems almost fraudulent. However, ancient physicians often succeeded with high accuracy. Why? The essence lies in taking Stomach Qi (Wei Qi) as the foundation. *Ling Shu* states: "Food enters the stomach, then transmits to the lungs, and all five zang and six fu organs receive qi." The Cun Kou (radial artery at the wrist) belongs to the Lung meridian and is the convergence of all vessels. Therefore, when the pulse comes, there is vital qi moving within it, blending harmoniously and flowing smoothly, possessing the essence of the Earth element (Spleen/Stomach). This is having Stomach Qi. Those who have it live; those who lose it die. This is the general principle. Secondly, one must deduce the顺应 or opposition of heavenly cycles: Humans correspond to heaven and earth. For example, Spring belongs to Wood, so the pulse should be wiry (Xian); Summer belongs to Fire, so the pulse should be surging (Hong), etc. Conversely, if it does not match, it is out of harmony with heaven. Thirdly, one must examine the generation and restriction among Zang organ qi: For instance, Spleen disease fears the wiry pulse because Wood restricts Earth; Lung disease fears the surging pulse because Fire restricts Metal. Conversely, if it does not match these restrictions, it causes no harm to the Zang qi. Fourthly, one must distinguish between compliance and deviation between disease and pulse: Disease and pulse each have appropriate and inappropriate manifestations. For example, after severe blood loss, the pulse should be quiet and fine; if it is instead surging and large, it indicates that Qi is also escaping outward. In cold-heat syndromes, the pulse should be surging and rapid; if it is instead fine and weak, it indicates that the True Yuan (Zhen Yuan) is about to collapse. As for the pulses of the True Zang organs, they appear because Stomach Qi has been exhausted and cannot nourish the five Zang organs. Thus, whichever Zang organ is diseased, its specific pulse appears alone. All these are detailed in the classics. If students study them diligently, they will understand clearly, and these can be used for judgment. However, claiming that pulse diagnosis alone can identify every specific disease, or predict life and death with absolute certainty beforehand, is incorrect. Pulse changes are不定 (indefinite/unfixed). Sometimes sudden external pathogens have not yet penetrated the meridians, causing the pulse to remain unchanged temporarily; sometimes diseases are mild and do not manifest in the pulse; sometimes chronic stubborn diseases have merged with Qi and Blood over time, making it difficult to judge severity instantly; sometimes disease transmission is unpredictable, so one cannot rely on a single moment's pulse to determine right or wrong. Moreover, there are thousands of disease names, but only dozens of pulse images. How can one know the exact disease just by palpating the pulse? These claims are often coincidental guesses used to deceive people. Furthermore, in cases of True Zang pulses, some patients near death never show them; how then to judge? One must combine inspection (Wang), listening/smelling (Wen), and inquiry (Wen) for comprehensive assessment to avoid errors. Thus, pulse diagnosis is sometimes reliable, sometimes not; saying it is unreliable ignores its certain reliability. It all depends on whether the physician thoroughly masters the classics and gains insight through deep thought, ensuring universal verification. Secular baseless theories are not worth believing. (Xu Lingtai)

Detailed Analysis of Various Pulses

The Floating pulse (Fu Mai) is felt with light pressure; it is not necessary that middle and deep pressures yield nothing. If, as Cui Shi said, it exists on the surface but not inside, above but not below, it lacks roots entirely and mixes with the Scattered pulse (San Mai), which is not the true appearance of the Floating pulse. ○ The Surging pulse (Hong Mai) is simply broad at the base, not hard. If it is large and hard, it is an Excess pulse (Shi Mai), not a Surging pulse. The Classics say: "Large indicates disease progression," meaning the pathogenic qi is flourishing. It also says: "Emaciated form with large pulse and excessive qi leads to death," indicating mismatch between form and pulse. ○ Difference between Deficient (Xu) and Scattered (San): Xu pulse feels soft upon pressure but is still perceptible; San pulse disappears completely upon pressure and is imperceptible. Difference between Xu and Knotted/Empty (Kou): Xu becomes softer the deeper one presses; Kou remains perceptible even with heavy pressure (empty center, firm edges). ○ San has two meanings: one is gradual disappearance, the other is disordered and irregular. Like scattered willow catkins, or irregular rhythm, varying in magnitude, this is a critical sign. However, if Heart pulse is floating, large, and scattered, or Lung pulse is short, choppy, and scattered, these are normal pulses (Ping Mai). Soft and scattered indicates disease; Kidney pulse soft and scattered signifies Kidney failure; Spleen pulse intermittent and scattered signifies Spleen Qi extinction. If both appear together, it is a sign of certain death. ○ Ying Qi circulates within the vessels; vessels take blood as their form. Kou pulse is empty in the center, a sign of blood loss. The pseudo *Jue* states: "Cun Kou Kou indicates accumulated blood in the chest; Guan Kou Kou indicates intestinal abscess." This treats Kou as an excess pulse of blood stasis and accumulation, rather than the empty pulse of blood loss and deficiency. Also, replacing "edge" with "head" in *Mai Jing* changes the meaning drastically. ○ Ru (Soft) pulse's floating softness resembles Xu pulse, but Xu is large in shape, while Ru is small. Ru's fineness resembles Ruo (Weak) pulse, but Ruo is at the deep level, while Ru is at the floating level. The pseudo *Jue* says: "Felt as present when pressed, absent when lifted" describes Ruo, not Ru. Ru's lack of root resembles San pulse, but San goes from floating-large to deep-absent, while Ru goes from floating-small to invisible. From large to non-existent is fully ominous; from small to non-existent is half-ominous. In chronic illness or elderly, it may not mean certain death; in healthy, young, or acute illness patients, it is called "rootless" and death is near. ○ Wei (Micro) means "non-existent"; its image is extremely fine and soft. Zhang Zhongjing said: "Like a spider's thread," describing its fineness and difficulty to see; "Like fat floating on soup," describing its softness and lack of strength. Light pressure feels like absence, hence "Yang Qi decline"; deep pressure feels like cessation, hence "Yin Qi exhaustion." In chronic illness, it is mostly incurable, indicating impending extinction of righteous Qi; in acute illness, survival is possible, indicating pathogenic Qi is not yet deep. ○ Previously, Ge (Leather) pulse was equated with Lao (Deep-Firm) pulse, which is incorrect. Ge is floating, Lao is deep; Ge is deficient, Lao is excess; their forms and syndromes differ. Wang Shuhe said: "Ge pulse in three positions, in chronic illness leads to death, in acute illness leads to life." *Jia Yi Jing* says: "Pulse chaotic and coming like surging springs, disease advances and complexion fails; going continuously like a breaking string leads to death." "Surging like springs" implies floating, not just wiry-large, but also rapid, beating, and slippery. "Breaking string" implies not just abrupt cessation, but also lack of root. ○ Kidney corresponds to Kan trigram and Winter; all things hibernate and store; Yang Qi sinks. Thus, its pulse governs deep Yin and resides internally. Mistaken sweating is like hibernating insects emerging to frost; mistaken purgation is like moths flying into boiling water. ○ Fu (Hidden) pulse governs disease in deep Yin regions, hidden places; light/shallow remedies cannot break its defenses. In Shang Han, Fu pulse in one hand is Single Hidden; in both hands is Double Hidden. One cannot use "Yang syndrome showing Yin pulse" as the sole example. Fire pathogen internal depression, unable to vent, results in Extreme Yang resembling Yin; thus, Fu pulse requires profuse sweating to resolve, like rain after drought, preceded by dark skies, reviving all things. In Yin-type Shang Han, with latent Yin internally and external cold invasion, Yin excess and Yang decline cause cold limbs and deep-hidden six pulses. Ginger and Aconite decoctions and moxibustion at Guanyuan are needed to restore Yang and pulse. If Taixi and Chongyang pulses are absent, death is certain. ○ Trees are firm due to deep roots; prisons are firm due to confinement. Zhongjing said: "Cold makes things firm," implying solidity. Shen Shi said: "Resembling deep and hidden, this is the position of Lao pulse; large, wiry, and long, this is the body of Lao pulse." Lao pulse governs disease; being in the deep level, it belongs to Yin-Cold; being wiry and excess, it indicates solid accumulations. In blood-loss or essence-depletion cases, internal deficiency should show Ge pulse; if Lao appears instead, pulse contradicts syndrome, predicting death. ○ Shi (Excess) pulse is an image of pathogenic qi being full, hard, and vigorous. Since it is large, long, hard, and present in all three depths, it embodies all Yang images, thus governing only Excess-Heat, not Deficiency-Cold. Jin (Tight) resembles Shi but differs greatly. Jin is heat constrained by cold, appearing tense and unrelaxed; Shi is pathogen forced by fire, appearing full and rigid, not soft. ○ *Su Wen* says: "Pulse weak and slippery indicates Stomach Qi; pulse weak and choppy indicates chronic illness." Weak pulse can be pressed deeply, Yin is not yet extinct; if combined with choppy image, Qi and Blood are ruined, life force extinguished. ○ Wei pulse is blurry and hard to see; Xi (Fine) pulse is obvious. Thus, Xi is slightly larger than Wei. Xi indicates blood deficiency and Qi decline; thus, in vomiting, diarrhea, or blood loss, deep-fine pulse indicates survival. Overworked individuals often have fine pulses, damaging their Qi and Blood. Generally, Xi and Wei pulses indicate residual Yang Qi decline; without warming and tonifying, how can lost Yuan Qi be restored? ○ Yin nature tends to stagnation; thus, Yin-Cold syndromes show Chi (Slow) pulse, distinct from Huan (Moderate/Relaxed) pulse. Huan is named for its wide and relaxed shape; Chi is defined by insufficient rate. Huan is four beats per breath, wide and peaceful; Chi is three beats per breath, sluggish. They are distinct. ○ Se (Choppy) pulse moves slowly and with difficulty, resembling stopping but not stopping; resembling scattering but not scattering. Note: Floating, extremely fine and soft, seeming present yet absent is Wei pulse; Floating, fine, and soft is Ru pulse; Deep, fine, and soft is Ruo pulse. These three resemble Se but are distinct. ○ Ancients compared Jie (Knotted) pulse to slow walking with occasional stumbling. Heat flows; Cold coagulates. Just as winter cold makes ice hard, human Shaohuo (Minister Fire) decline and Middle Qi deficiency lead to loss of vigorous movement, causing Qi, Blood, Phlegm, and Food to tangle, hindering circulation, resulting in Jie pulse. ○ Jie and Cu (Rapid-intermittent) pulses stop irregularly; Dai (Intermittent) pulse stops regularly. Jie/Cu stops resume immediately; Dai stops last a long time. *Nei Jing* views Dai pulse as sign of Zang Qi decline and Spleen meridian exhaustion. Exceptions: Shang Han palpitations, 3-month pregnancy, extreme emotions, severe trauma, wind/pain syndromes do not fear Dai pulse. Healthy emaciation with Dai pulse is critical. Chronic illness with Dai pulse is hard to cure. Young with Dai die; old with Dai live (flexible application). ○ Huan pulse means wide, relaxed, and gentle, opposite to Jin. If Cun (Yang) and Chi (Yin) are equal, floating-large and soft, without bias, it is Huan and harmonious, the true Stomach Qi pulse. Earth is mother of Stomach Qi; harmonized Middle Qi prevents disease. All pulses must carry Huan, called Stomach Qi, not disease pulse. Combined with floating, slow, deficient, soft, fine, choppy shapes indicates insufficiency, Wind, or Exterior Deficiency. ○ Shu (Rapid) means restless and urgent, lacking harmony. Fire nature is swift; thus, Yang-excess syndromes show rapid pulse. In Lung, it is a thief pulse; in Autumn, it is an inauspicious sign of restriction. ○ Hua (Slippery) means smooth flow without obstruction. Vessels are the house of Blood; blood dryness causes choppy pulse, blood abundance causes slippery pulse. ○ Jin (Tight) is tense with twisting image. Heat relaxes sinews; Cold tightens them. This image appears only when heat is trapped inside and cold binds outside. Observing *Nei Jing*'s "side-to-side vibration," Zhongjing's "like turning rope," Danxi's "like sewing thread," and Shuhe's "like cutting cord," we see Jin involves not just longitudinal tension but also lateral rotation. Jin's tension resembles Xian (Wiry) but is more rigid and twisted like a rope. ○ Cu pulse causes: 60-70% from Zang Qi disharmony; 20-30% from True Yuan exhaustion. Caused by Qi stagnation, Blood congealment, Phlegm retention, Food obstruction, external Six Evils, or internal Seven Emotions, all hindering circulation. Decreasing interval between stops indicates recovery; increasing interval indicates worsening. ○ Dong (Moving) pulse dips at ends and rises in middle, similar to Duan (Short) pulse. But Duan is Yin, not rapid/hard/slippery; Dong is Yang, rapid/hard/slippery. ○ Ji (Rapid-extreme) pulse, also called Ji, is extremely rapid, the extreme of Shu. Seen only in Shang Han extreme heat, not common in other diseases. In consumptive weakness, it indicates Yin marrow exhaustion and Yang flare-up, imminent death. ○ Xian (Wiry) pulse is straight like a lute string, slightly long. Classics: Shaoyang Qi is mild and soft, hence wiry pulse. Strong arrival indicates excess, disease exterior; weak arrival indicates deficiency, disease interior. Liver pulse soft and long like touching bamboo tip is normal; too strong is liver disease; too tense is liver death. Xian and Chang (Long) govern Spring. Xian is early Spring, Yin within Yang, cold weather, straight and tense; Chang is late Spring, pure Yang, no cold, straight and long, vibrant growth. ○ Chang pulse response similar to Xian, but Xian is wood/beginning; Chang governs main Spring command, heaven-earth Qi expanding. Classics: "Long means Qi is governed." Li Yuechi: Long Heart pulse = strong spirit/Qi; Long Kidney pulse = stable root. Both normal. Only long and relaxed matches Spring Qi, indicating vigor. Long and hard indicates Fire hyperactivity/disease. ○ Duan (Short) opposes Chang; Chang responds to Spring, Duan to Autumn; Chang belongs to Liver, Duan to Lung. Lung governs Qi (Yang), should be abundant; Short pulse alone indicates Qi decline. *Su Wen*: Normal Lung pulse is gentle like falling elm seeds, containing relaxation, Qi governed. Short, deep, and choppy indicates Qi disease. ○ Generally, Long and Short represent excess and deficiency. Long resembles Xian but stronger (excess); Short resembles Dong but weaker (deficiency). Xian is tense, Long is relaxed; Dong is slippery/rapid, Short is choppy/slow. Careful comparison reveals precise distinctions. (*Maihui Can*)

Adaptations

Floating indicates Exterior; Deep indicates Interior, a method passed down since antiquity. However, Deep pulse can indicate Exterior syndrome due to Yin-excess/Yang-deficiency and Cold dominance; Floating pulse can indicate Interior syndrome due to Yang-excess/Yin-deficiency and Water deficiency. Thus, to detect Exterior pathogens, do not rely solely on Floating/Deep; distinguish by Tight/Rapid. ○ Although Floating belongs to Exterior, in Yin-blood deficiency or Middle Qi depletion, pulse floats without strength; thus, Floating cannot universally mean Exterior. Although Deep belongs to Interior, in deep initial Exterior contraction where Cold binds skin/pores preventing pulse reach, it must be Deep-Tight; thus, Deep cannot universally mean Interior. Rapid usually means Heat, but True Heat pulse may not be rapid; in deficiency syndromes with Yin-Yang distress and Qi-Blood agitation, severe deficiency causes rapidity; thus, Rapid cannot universally mean Heat. Slow usually means Cold, but after Shang Han recedes with lingering heat, pulse is often Slow-Slippery; thus, Slow cannot universally mean Cold. Wiry-Strong resembles Excess, but in severe True Yin/Stomach Qi deficiency or Yin-Yang blockage, pulse is vast and wiry-tough; thus, Strong cannot universally mean Excess. Micro-Fine resembles Deficiency, but in extreme pain with Qi closure and Ying-Wei stagnation, pulse hides; thus, Hidden cannot universally mean Deficiency. ○ Rapid pulse has Yin and Yang aspects. Modern belief that Rapid always means Heat is erroneous. I have seen Internal Heat/Latent Fire cases where pulse is not rapid, but Surging-Slippery-Strength. Differentiation of Rapid pulse has seven points: 1. External Pathogens: Cold invasion causes Tight-Rapid pulse. Initial rapidity without meridian transmission implies no heat yet; if transmitted long-term, Rapid-Slippery-Excess indicates heat; Rapid-Weak indicates Yin syndrome. Not all external Rapid pulses mean Heat. 2. Deficiency: Yang-deficiency Rapid is Weak-Rapid or Fine-Small; Yin-deficiency Rapid is Rapid-Wiry-Slippery. Despite feverish symptoms, avoid cold herbs. Mistaking Deficient-Rapid for Heat-Rapid leads to failure. 3. Malaria: Attacks cause Tight-Rapid; remission brings Harmonious-Rapid. Does attack imply fire, remission imply no fire? Fire doesn't stop; only Cold pathogen retreats/advances. True fire/heat is different. Malarial Rapid is not necessarily Heat. 4. Dysentery: Often caused by Cold-Damp injury, leading to Spleen/Kidney deficiency and Rapid pulse. If accompanied by Wiry/Choppy/Fine/Weak, it is Deficient-Rapid, not Heat-Rapid. Only if signs show Fire, patient is strong, and pulse is Surging/Slippery/Rapid-Excess, treat as Heat-Rapid. 5. Abscesses/Ulcers: Can be Yin or Yang; not all Rapid pulses indicate Heat. 6. Smallpox/Chickenpox: Rapid due to unexpelled toxin. Differentiate Yin/Yang by Deficiency/Excess; do not assume Heat. 7. Masses/Accumulations: Stagnation causes Rapid pulse. If stagnation turns to malnutrition, Yangming obstruction causes bad breath/gum disease/fever, clear Stomach/Fire. Without Fire signs, Fine-Rapid is not Heat. 8. Pregnancy: Chong/Ren Qi blockage causes Rapid pulse, not Fire. Differentiate Cold/Heat by Weak/Strong; do not blindly use Huangqin (Scutellaria) as a holy drug. ○ Fu (Hidden) pulse resembles Deep/Micro/Fine/Depleted, but differs. Fu pulse is barely existent and temporarily concealed. Cases include severe abdominal pain, Qi reversal blocking vessels, or temporary Qi collapse discontinuity. These occur in acute/critical conditions; regulating Qi restores pulse. In chronic wasting, pulse becomes micro and gradually hidden, signaling impending extinction, not "hidden." Common practitioners misdiagnose any subtle pulse as Fu, using Qi-breaking/Phlegm-resolving drugs arbitrarily, akin to urging a dying person to hurry. ○ Large pulse indicates disease progression (pathogen wins); Slow pulse indicates disease regression (Stomach Qi returns, healing). Generally true, but exceptions exist: If naturally large pulse becomes Surging-Rapid, disease progresses; if naturally small...