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Annotation states: This is because the fire pathogen has a tendency to flare upwards. When heat in the stomach and diaphragm is excessive, it leads to dysfunction of transmission and transformation.

Annotation states: Redness, swelling, pain of the eyes, and damage to the corneal opacity (Yi Mo) are all caused by heat. The *Classic of Internal Medicine* (*Huangdi Neijing*) states: "When heat is extreme, one closes the eyes and experiences visual darkness." Zhang Zhongjing discussed *Shanghan Bing* (Cold Damage Disease): "When heat reaches its extreme, one becomes blind and cannot recognize people; this is blindness." *Zhengli* states: This occurs because extreme heat stagnates within the eyes, causing such conditions.

Annotation states: Sudden diarrhea shares the same principle as Jun Huo (Ministerial Fire/Heart Fire).

Annotation states: "Ti" refers to palpitations or startle-like trembling. Fire is dynamic in nature; therefore, during the hot summer, the pulse presents as洪大 (Hong Da, Surging and Large) and long, which is the manifestation of fire.

Annotation states: This is because the nature of fire is rapid and swift. Sometimes, Heart Fire flares up violently while Kidney Water is deficient and unable to control it. The heat qi stagnates, causing the Shen (Spirit/Mind) to become confused and obscured, leading to loss of function in the sinews and bones. One may suddenly collapse and lose consciousness, known as Jiang Pu (Stiff Collapse). In severe cases, Water is controlled by Fire; extreme heat generates phlegm-saliva, and at the extreme point, death ensues. Commonly called "An Feng" (Hidden Wind), this condition arises because excessive Fire controls Metal (Lung), preventing Metal from subduing Wood (Liver), thus allowing Wind-Wood to become hyperactive. Obese individuals have dense cou li (skin and interstices) and are prone to Qi stagnation, making the flow of Qi and Blood difficult. If Yang-Heat is also excessive and stagnates internally, it can lead to stroke (Zhong Feng). Thin individuals who suffer from stroke do so because sudden, extreme Yang-Heat causes blockage and stagnation.

Dryness corresponds to Yangming Dry-Metal, representing the Qi of the Lung and Large Intestine.
[All conditions involving astringency, dryness, withering, stiffness, and skin cracking belong to Dryness.]

Annotation states: Generally, things that are moist are smooth and slippery, while those that are dry are astringent and stagnant; Dryness and Dampness are opposite in nature. [For example], a sensation of astringency and stagnation throughout the body, inside and out, belongs to the transformation of Dry-Metal, which is why the autumn pulse is astringent. "Se" (Astringent) means astringent or stagnant. Numbness (Ma) also arises from astringency. It is caused by a deficiency of body fluids leading to dryness and astringency, where Qi movement becomes obstructed and fails to be smooth and unobstructed. Strong Qi attacks and rushes, resulting in numbness. Folk prescriptions often use herbs like Wu Tou (Aconite Root) and Fu Zi (Prepared Aconite Lateral Root) to allow Qi to break through and open pathways, achieving unobstructed flow; once Qi moves, the numbness resolves. In the absence of Heat syndromes, this method is highly effective. However, if Wind-Heat overcomes Dampness to transform into Dryness, causing numbness, it is appropriate to use cool herbs that dispel wind, clear heat, invigorate blood, nourish fluids, moisten dryness, and promote Qi circulation to regulate the condition, thereby resolving the numbness naturally. To treat various astringent and dry conditions, adhering to this method is correct.