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The *Suwen* (Basic Questions), "Shengqi Tongtian Lun" chapter, states: If one is injured by wind in spring, the pathogenic factor lingers and leads to **dongxie** (severe diarrhea with undigested food); if injured by summerheat in summer, **maji** (malaria) will occur in autumn; if injured by dampness in autumn, it causes upward reversal leading to coughing and develops into **weijue** (flaccidity and cold extremities); if injured by cold in winter, **wenbing** (warm disease) will inevitably occur in spring.

The *Suwen*, "Yinyang Yingxiang Lun" chapter, states: If injured by wind in spring, **sunxie** (diarrhea with undigested food) occurs in summer; if injured by summerheat in summer, **maji** (malaria) inevitably occurs in autumn; if injured by dampness in autumn, coughing occurs in winter; if injured by cold in winter, **wenbing** (warm disease) inevitably occurs in spring.

Wang Qixuan commented: Wind attacks the exterior and corresponds internally to the Liver (*Gan*). Liver Qi overacts on the Spleen (*Pi*), hence **dongxie** or **sunxie**. Summer heat is extreme, and autumn dryness/heat contracts; the conflict of two heats results in **maji** (malaria). Autumn dampness prevails, and winter water qi flourishes; water and dampness combine, Lung (*Fei*) qi declines, so dampness attacks the Lung causing coughing. The development of **weijue** occurs because dampness attacks the Zang-Fu internally causing reverse coughing, and scatters externally into the sinews causing flaccidity. "Jue" refers to reversed Qi. Winter cold condenses, and spring Yang Qi emerges; if cold is not resolved, Yang becomes stifled internally. Cold and stifled Yang contend, resulting in **wenbing** (warm disease).

Cheng Wuji, commenting on these eight sentences from the *Suwen* quoted in the *Shanghan Lun* (Treatise on Cold Damage), stated: In spring, wind qi is prevalent. Spring injury by wind connects to the Liver. Liver Qi is prosperous in spring; although wind enters, it does not manifest immediately. By summer, Liver Qi declines, and the wind begins to move. Wind excess causes diseases of the extremities, so it should manifest in the four limbs. However, in summer, Yang Qi is abundant externally, preventing wind from dispersing outward, so it attacks inward causing **sunxie**. In autumn, dampness is prevalent. Autumn injury by dampness dries/injures the Lung. Lung Qi is prosperous in autumn; although dampness enters, it does not manifest immediately. By winter, Lung Qi declines, and dampness begins to move. Rain/dampness excess causes abdominal diseases, so it should cause dysentery. However, in winter, Yang Qi is secured internally, preventing dampness from descending, so it reverses upward causing coughing. In summer, summerheat is prevalent. Summer injury by summerheat: Summer is Yin-dominated internally; although summerheat enters, its force cannot move. When autumn arrives, Yin moves out and Yang dominates internally, then summerheat moves and contends with Yin, causing **maji**. In winter, cold is prevalent. Winter injury by cold: Winter is Yang-dominated internally; although cold enters, its force cannot move. When spring arrives, Yang moves out and Yin dominates internally, then cold moves and contends with Yang, causing **wenbing**.

Wang Haizang said: Wood corresponds to Spring in time, Liver in humanity, and Wind in heaven. In spring, the warm command should prevail, but it is suppressed by cold; this means the three months of spring execute the commands of the three months of winter. Thus, Water Qi is excessive. Since Water is excessive, Metal's肃杀 (astringent/killing) nature is severe; the overcoming element acts recklessly. When the overcoming element acts recklessly, Wood Qi is clearly deficient. Since Wood is deficient, Fire command is insufficient; the generated element suffers disease, so the overcoming element (Water) insults it. Thus, Earth overacts on Wood's domain, transforming into **sunxie**. The disease manifests in summer because Wood perishes in summer while Earth flourishes; dampness naturally tends downward. It does not manifest in spring because although wind injures, Wood actually holds power. Summerheat corresponds to Late Summer, which corresponds to Damp Earth. Ruler Fire holds power and does not give to its son; the summer-damp command does not execute. If damp command does not execute, Earth is deficient. The overcoming element acts recklessly, Wood Qi is excessive, Shaoyang is prosperous. The generated element suffers disease, so Lung Metal is insufficient. The overcoming element insults it, so Water overacts on Earth's domain. Earth corresponds to Kun, Kun corresponds to Shen, Shen corresponds to Ministerial Fire. Water entering Earth causes Water-Fire conflict; Water-Fire conflict causes urgent Yin-Yang interaction, resulting in alternating chills and fever. Combined with Wood Qi ending in Sanjiao, this is the combination of Shaoyang Ministerial Fire. Shaoyang is in the Damp Earth domain, hence alternating chills and fever. Insufficient Lung Metal causes shivering chills and fever; these are all unsettled Qi, hence **maji**. It manifests in autumn rather than summer because damp-heat gains power in You. Autumn is clear and austere Qi, with a contracting and descending nature. Injury by dampness means Long Summer Qi does not accord with Autumn Command. Autumn Command is insufficient, the overcoming element acts recklessly, so Fire flares upward to overcome Metal. Heart Fire punishes Lung, so Lung Qi reverses causing cough. The overcoming element insults it, Wood Qi ascends, aligning with Fire, moving ceaselessly. The generated element suffers disease, so Kidney Water is deficient. Long Summer is excessive, Sanjiao Qi is prosperous. Mingmen is the convergence of Sanjiao, forcing Kidney Water upward to combine with Spleen-Damp-Heat, causing disease. Cough moves Spleen-Damp, hence cough with sound and phlegm. It manifests in winter rather than autumn because the extreme of Six Yin allows killing Qi to gain power. Winter injury by cold means Winter executes Spring Command; it should be cold but is warm, Fire wins and Water is deficient. Water deficient, the overcoming element acts recklessly, Earth is surplus; the generated element suffers disease, Water is insufficient; the overcoming element insults it, Fire is excessive. Fire and Earth combine virtue, damp-heat assist each other, causing **wenbing**. It manifests in spring rather than winter because Cold-Water occupies Mao, gaining power; the great cold command re-executes in spring, pores open, Shaoyin fails to store, sexual fatigue injures, hardworking people leak Yang externally, Kidney Water deficiency internally. In spring months, strong Wood grows, unable to nourish the source of generation, hence **wenbing**.

Generally, "Spring injury by wind," "Summer injury by summerheat," and "Winter injury by cold" follow smooth logic; here "time" (Shi) equals "command" (Ling). Only "Autumn injury by dampness" is interpreted as "Command injuring Time"; readers should not doubt this. These four theories all describe Mother Qi being excessive and harming the Son Qi it bears. If "Autumn" injures "Dampness," the text connects with the previous three sentences, but the principle and method do not connect. Generally, principle and method connect; one need not be rigid about the text. Some say "Spring injury by wind" means humans are injured by wind, which is incorrect. If so, there would only be headache, aversion to wind, and spontaneous sweating; why mention summer **sunxie**? Now saying "Spring injury by wind" clearly means Time injuring Command.

My commentary: Various annotations on these four injuries fail to grasp the classic's intent, likely due to over-speculation. Mencius said: "The Way is near, yet sought far; matters are easy, yet sought difficult." This applies here. If explained simply and plainly, the classic's intent becomes clear without forced interpretation. Why? Wind, summerheat, dampness, and cold are the four Qi of heaven and earth. When they injure humans, can one know before manifestation which meridian, Zang-Fu, or part is affected and what disease forms? Only after manifestation can diagnosis reveal which meridian, Zang-Fu, or part is affected and what disease forms. If annotators understand that disease reveals the origin, these four injuries resolve easily.

**Dongxie**, **maji**, cough and **weijue**, and **wenbing** are all traced back to their origins (wind, summerheat, dampness, cold injury) based on obvious symptoms at onset; it is not that the initial injury predetermined the current disease. Injuries by the four Qi may manifest immediately, after a delay, or long after; some dissipate without disease. This is due to variable pathogenic transmission and varying Zheng Qi (Upright Qi) strength. Taking wind injury: immediate manifestation causes aversion to wind, fever, headache, sweating, cough, panting; delayed manifestation causes leprosy-like conditions, internal heat/cold, hemiplegia, wind of five Zang. Thus, **dongxie**/**sunxie** is just one type of delayed manifestation. From these diseases, we infer spring wind injury stored within. If these diseases did not arise, who could know prior wind injury? If delayed injury dissipates, who knows? Even Taisu pulse methods, predicting death, rely on obvious signs. Summer heat causing **maji** and winter cold causing **wenbing** follow similar logic. However, autumn dampness causing cough and **weijue** shares the "disease reveals origin" logic but differs in "command timing." Spring wind, summer heat, winter cold are native season commands. Dampness is Long Summer's command; why mention autumn? Spring, summer, winter have three months each, their commands run in their seasons. Long Summer parasitizes June. Autumn has three months, but Long Summer dampness often invades autumn, hence "Autumn injury by dampness."

Let us explain the meaning of four Qi injuries. Wind is Spring's command. Spring infection, if not immediate, persists to summer, becoming disease. **Dongxie** occurs because wind is vast, flying, and rapid; human intestines/stomach cannot process food normally, leading to simultaneous discharge of fluids and grains. **Sunxie** is similar. Summerheat is Summer's command. Summer infection, if not immediate, persists to autumn, combined with wind/cold, causing **maji**. Cold is Winter's command. Winter infection, if not immediate, persists to spring. Body Yang is stifled by cold, unable to rise gradually, but must emerge timely, causing **wenbing**. Autumn dampness's command timing was discussed earlier. The previous chapter's "upward reversal cough and **weijue**" implies immediate manifestation, but listed with wind/summerheat/cold, it likely isn't immediate. Without explicit text, I dare not equate it to winter onset. Although damp is Long Summer's command invading autumn, even if immediate, it resembles delayed onset. We discuss autumn onset. Damp enters from below, disturbs Lung causing cough (upward reversal). Lung governs Qi; disease prevents external movement; damp blocks meridians, causing limb flaccidity and cold. The later chapter's "winter cough" mentions delay, differing from the former. Damp lingers until winter cold prevails; Lung fears cold and is injured; damp exploits deficiency to invade Lung, causing cough. Readers should seek this intent to understand the classic.

Some see "inevitably" (bi) in *Suwen* regarding **wenbing** and **maji** and treat them as absolute laws. Alas! Is it truly inevitable? *Suwen* uses "inevitably" sometimes and not others, refusing rigidity. Classics have seemingly absolute statements that are not absolute. E.g., Heat Jue from drunken sex; Heat/Sweet Middle from the rich; Head Wind after washing hair. Are these universal? Readers should be flexible, not rigid.

Wang Qixuan's annotation, though rigid on "inevitably" and missing full intent, is not too far off. Cheng Wuji's view is further off but not extreme. Wang Haizang's theory is overly speculative, trying to be unique, but ends up forced and contradictory. As ancient scholars said: like scouts going too far without return. I will critique Cheng and Wang.

Cheng Wuji says wind excess causes extremity diseases, thus limbs. I say "should" is absolute. Spring wind + Summer Yang abundance = inward attack (**sunxie**). Plausible? Classic says: Wood movement has no fixed time. If wind injury is not in spring, or without Summer Yang, does it go out or in? Wind is Yang, same as Summer; if outgoing, it follows dispersion. Why not? Wind changes rapidly; diseases vary, not just limbs. "Rain excess causes abdominal disease" is equally flawed. Summer heat causing autumn **maji**: heat hides between skin and stomach/intestines; autumn wind triggers it. See *Suwen·Maji Lun*. What does this have to do with Summer Yin internal/Autumn Yang internal/heat contending with Yin? Winter cold causing spring **wenbing**: cold toxin enters skin/muscle, stifles Yang; spring Yang emerges, body's stifled Yang exits, disease starts. See *Shanghan Lun*. What does this have to do with Winter Yang internal/Spring Yin internal/cold contending with Yang?

Wang Haizang calls spring/summer/winter injuries "Time injuring Command" and autumn dampness "Command injuring Time." He claims spring executes winter command (cold suppresses warmth); summer heat is Late Summer/Damp Earth, Ruler Fire doesn't generate son, damp command fails; autumn injured by damp means Long Summer Qi doesn't match Autumn; winter executes spring command (Fire wins/Water loses, cold returns to spring, Yang leaks/Kidney Water deficient). He says **wenbing** is damp-heat assistance and all four injuries are Mother excessive harming Son. How fragmented and verbose! Classics mean humans are injured by wind/heat, not Time/Command mutual injury. If Wang were right, how to interpret "Summer injury by heat, Autumn injury by wind" in *Maji Lun*? Time injuring Command or Command injuring Time? Who doesn't know heat is Summer's command? Calling it Late Summer/Damp Earth is strange. If winter executes spring command, it causes Winter Warm Disease, not Spring Warm Disease. If great cold returns to spring for **wenbing**, does absence of great cold prevent **wenbing**? Spring **wenbing** is common, not always due to great cold. Classic says: Excess harms, bearing controls. Excess invites control (e.g., Fire excess invites Water). "Ministerial Fire borne by Water," "Water position borne by Earth" means the overcoming element bears. Wang calls Excess Mother, Bearing Son; does he surpass the classic or fail to understand? Restraint vs. Overcoming: Restraint is Sheng Suo (Overcome), Being Restraint is Bu Sheng Suo (Not Overcome). Classic: Excess Qi restrains what it overcomes and insults what does not overcome it. Wang's view contradicts this. I won't bother refuting every derivative point of his Time/Command theory.

Alas! I criticize predecessors not for pleasure, but to protect the Great Meaning and prevent misleading future generations. I accept the charge of presumption.

Zhi Bingzhong said: Spring wind, summer heat, autumn damp, winter cold are causes; **sunxie**, **maji**, cough, **wenbing** are symptoms. Humans feel four Qi; waiting for transmission/change, the overcoming element insults the non-overcoming, causing symptoms. If Yuan Qi is solid, delayed manifestation may not occur. Debate is complete; I add nothing. But his "Time injuring Command/Command injuring Time" theory is questionable. Spring/Summer/Autumn/Winter are Times; Warm/Hot/Cool/Cold are Commands. Spring should be warm but is cold; Summer hot but cool; Autumn cool but hot; Winter cold but warm. These are abnormal Qi variations. Humans touching them get sick; does Time intend to harm? If Time injures Command and Command injures Time, Qi mutually harms, and everyone gets sick simultaneously. Is this logical?