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Lei Shaoyi stated: Examining the discussions on Spring-Warmth (Chunwen) by various masters, only Jiayan (Yu Chang) and Yuan Gong were precise and meticulous. Jiayan categorized "winter injury by cold, spring must result in warmth disease" as one example; "winter failure to store essence, spring must result in warmth disease" as another example; and "both injured by cold and failing to store essence, occurring simultaneously in spring" as a third example. By presenting these three examples to discuss warmth diseases, he detailed their treatments. Yuan Gong's discussions focused entirely on the clinical manifestations of wind injury in spring, distinguishing how to diagnose and treat the Three Yang meridians (Taiyang, Yangming, Shaoyang) and the Three Yin meridians (Taiyin, Shaoyin, Jueyin). Observing the arguments of these two schools, one could say they are as clear as pointing at one's palm. However, adhering solely to Jiayan contradicts Yuan Gong, and adhering solely to Yuan Gong contradicts Jiayan, thereby leaving later generations without a standard for treatment. In fact, Jiayan's argument follows the classic teachings by dividing into three examples, aiming at "latent qi" (pathogenic factors lying dormant within the body); Yuan Gong's arguments all pertain to the clinical signs of "newly acquired" (immediate external pathogenic invasion), aiming at new acquisition. In summary, Spring-Warmth disease arises because slight cold was contracted in winter, lying dormant in the skin and muscles without immediate onset; or due to failure to store essence in winter, lying dormant in the Shaoyin meridian without immediate onset; both await the arrival of spring when exposed to external cold, which stirs up the latent qi, causing the disease to manifest. This is exactly what the *Classic* (Huangdi Neijing) says: "Winter injury by cold leads to warmth disease in spring; winter failure to store essence leads to warmth disease in spring." At the initial stage, symptoms include pain in the head and body, aversion to cold with fever and anhidrosis, cough, thirst, floating white tongue coating, and pulse that is abundant upon light pressure, either wiry (Xian) or tight (Jin), and slippery (Hua) or rapid (Shu) upon heavy pressure. In such cases, acrid-warm exterior-releasing method should be used first. If the tongue coating becomes dry, yellow, or scorched black, it indicates that warm-heat has reached the Stomach, requiring immediate use of cool-clearing interior-heat method. If the tongue is crimson, teeth are dry, delirium occurs, and consciousness is clouded, it indicates that warm-heat deeply occupies the Ying (Nutrient) level of Yangming, requiring heat-clearing and detoxification method to preserve body fluids. If there are convulsions of the hands and feet with a wiry and rapid pulse, this is extreme heat generating wind, requiring heat-dispelling and wind-extinguishing method. If there is coma with loss of consciousness, muteness resembling corpse rigidity (Shijue), this indicates evil Qi has penetrated the Pericardium, requiring heat-dispelling and orifice-opening method. The transformations of Spring-Warmth are endless; one must adapt flexibly according to the situation.

Chen Lianfang stated: This occurs when newly acquired cold evil stirs up latent qi, causing Spring-Warmth disease. At the onset of Spring-Warmth, there is aversion to cold, fever, and anhidrosis, indicating cold evil on the exterior. Therefore, acrid-warm exterior-releasing method can be used. Otherwise, warm-dispersing methods must be strictly avoided; do not attempt them, lest they damage body fluids. The complicated manifestations of Spring-Warmth are terrifying; practitioners must exercise caution during the initial stage of the disease.

Yang Ruhou stated: The disease of Taiyin presents with a pulse that is neither slow nor tight but rapid, or the cun positions on both sides are exclusively large, heat in the chi skin, headache, body fever, thirst, and worse fever in the afternoon, named Warmth Disease. If there is aversion to cold and anhidrosis, this is caused by cold stirring up latent qi in spring. If there is aversion to wind, or no aversion to wind, spontaneous sweating, and cough, this is caused by wind stirring up latent qi in spring. Zhang Zhongjing attributed warmth disease to Taiyang, referring to latent qi. He meant that winter cold injury causes cold evil to lie dormant in Shaoyin; until spring arrives, the cold transforms into heat, moving from interior to exterior, and floating outward to Taiyang. Later scholars attributed warmth disease to Taiyin, referring to new evil stirring up latent qi; meaning warm evil enters via mouth and nose, descending from above; the nose connects to the Lung, so all warmth diseases begin in the Upper Jiao, affecting Hand-Taiyin Lung Meridian. Thus it is said: The disease of Taiyin presents with a pulse that is neither slow nor tight but rapid. A pulse that is not slow indicates it is not Taiyang Wind Strike (Zhongfeng); a pulse that is not tight indicates it is not Taiyang Cold Damage (Shanghan). However, headache, body fever, and slight aversion to wind and cold still have similarities with Cold Damage and Wind Strike; how to distinguish them? Distinguish by rapid pulse, thirst, heat in chi skin, and worse fever in the afternoon. Generally, winter latent cold transforms into warmth by spring; or due to spring cold sensation triggering internal qi causing disease; or due to spring wind sensation triggering internal qi causing disease. This is new evil stirring up latent evil; new evil is on the exterior, latent evil is in the interior. One must first use acrid-cool to release exterior evil, then proceed with bitter-cold to clear interior heat. Do not mistake it for wind-cold and recklessly use acrid-warm methods, which would fan the flames and assist the fire.