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Treats Hongjiao (a disease characterized by swelling and pain in the lower limbs), with swelling and pain in the shins and feet, aversion to cold, and high fever. (Hongjiao acquired from external contraction is caused by mountain rain or walking on damp-heat terrain; that acquired internally is due to the toxicity of damp-heat from consuming raw/cold foods, tea, alcohol, and oily/noodle-rich diets. The pathology involves both dampness and heat. Dampness has a downward nature, so it settles in the feet. When dampness and heat contend, excess dampness leads to swelling, while excess heat leads to high fever. If accompanied by headache and other symptoms, it resembles Taiyang disease (Taiyang syndrome), but differs in that the shins swell and pull with pain. This disease contraindicates tonifying agents and hot washing/bathing, as heat and tonification exacerbate the condition; severe purgation is also unsuitable. Treatment favors unblocking and avoids cold. If Hongjiao qi rushes to the heart, causing incessant panting and vomiting, this is due to water qi attacking heart fire. Pain preceding swelling indicates qi injury affecting blood; swelling preceding pain indicates blood injury affecting qi. Flaccid tendons and vessels with swelling and pain indicate qi involvement, suitable for promoting urination to drain dampness and dispersing wind. Contracted, withered, thin tendons without swelling but with pain are named Dry Hongjiao, representing dryness-heat, suitable for moistening blood and clearing dryness.)

Fangji (Stephaniae Tetrandrae Radix), Mutong (Akebiae Caulis), Binglang (Arecae Semen), Shengdi (Rehmanniae Radix Praeparata - washed with wine), Chuanxiong (Ligustici Chuanxiong Rhizoma), Baizhu (Atractylodis Macrocephalae Rhizoma - stir-fried), Cangzhu (Atractylodis Rhizoma - salt-stir-fried), Huangbai (Phellodendri Cortex - wine-stir-fried), Gancao Shao (Glycyrrhizae Radix et Rhizoma tip), Xijiao (Rhinocerotis Cornu). Indicated for red urine.

Fangji promotes water metabolism and treats wind, draining damp-heat from the Lower Jiao. Binglang breaks stagnation and promotes urination, directing the action of other herbs downward. Mutong descends Heart Fire, allowing it to exit via the Small Intestine.

Treats chronic diarrhea due to Cold-Dampness encumbering the Spleen that fails to resolve.

Zhen Maoshan Cangzhu (Maoshan Atractylodis Rhizoma - soaked in rice wash overnight, sliced and stir-fried. If unavailable, use high-quality Baizhu instead, 8 liang); Pogu Zhi (Euodiae Fructus / Psoraleae Fructus contextually often Euodiae here or similar warming herb, traditionally Psoraleae corylifolia in some contexts but "Pogu Zhi" usually refers to Psoraleae Fructus/Bu Gu Zhi, however text says "Pogu Zhi", likely a variant or typo for Bu Gu Zhi, assuming Psoraleae Fructus based on common pairing, but strictly translating name: Pogu Zhi) (soaked in wine, sun-dried, stir-fried); Baishao (Paeoniae Radix Alba - stir-fried until yellow, 4 liang); Nongpo (Magnoliae Officinalis Cortex - stir-fried with ginger juice); Yunling (Poria) (2 liang); Gancao (Glycyrrhizae Radix et Rhizoma - honey-fried); Chuanjiao (Zanthoxyli Pericarpium - remove seeds and closed ones). Take 70-80 pills with decoction.

The *Neijing* (Inner Canon) lists nineteen pathogenesis clauses but omits Dryness Qi. Other texts stating "Autumn injury by Dryness" interpret it as "Autumn injury by Dampness." Past sages interpreted according to the text without examining closely... regarding Cold, Liver Wood, Era, Can... Observe how the essence of grasses and trees is abundant; once encountering Metal Qi (Autumn Dryness), their appearance changes instantly, withering at the top, clearly showing that Dryness Qi first injures the Upper Jiao Huagai (Lung). Examining this detail, the clauses "All Qi stagnation and oppression belong to the Lung" and "All flaccidity, panting, and vomiting belong to the Upper" in the Pathogenesis explicitly refer to Dryness diseases. *Shengqi Tongtian Lun* states: "Injury by Autumn Dryness causes upward rebellion with cough, developing into flaccidity and厥 (Jue/counterflow)." The essence of Dryness disease is summarized in one phrase, aligning perfectly with the two pathogenesis clauses. It must be known that if Lung Qi is not dry, all Qi receives the clear and descending command, circulating throughout the body, avoiding resentment and stagnation. The "Upper" in "Flaccidity, panting, and vomiting belonging to the Upper" refers to the Lung, not the Heart. If speaking generally of the Upper Jiao Heart and Lung, Heart disease does not govern flaccidity, panting, or vomiting. Only when Lung Dryness is extreme do the lung lobes become flaccid and non-functional, Lung Qi rebels causing panting/wheezing, food cannot pass through the diaphragm causing vomiting. These three are extreme manifestations of Dryness syndromes. The scripture originally stated: "Violating Autumn Qi, the Taiyin does not receive, Lung Qi becomes scorched and full." How can this be called a Dampness disease? As for left hypochondriac pain, inability to turn, dry throat, dusty complexion, lack of luster in the body, heat on the outer side of the foot, lower back pain, fright, tendon contraction, men's hernia, women's lower abdominal pain, blurred vision, and sores, these are Dryness diseases originating from the Liver, appearing variably. When the Liver presents Dryness symptoms, it is indeed urgent to save the Liver lobes from scorching damage. However, clearing Lung Metal and removing the root of Dryness is the primary task. If Lung Metal is diseased itself and does not affect the Liver, focusing solely on saving the Lung is necessary; if delayed, scorching and withering may occur immediately, leaving no room for gradual efforts.)