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It is said: In the height of summer when it is hot, people often travel on roads exposed to the heat, and Heat-Toxin (Re Du) easily injures the body. If mild, the pathogen lodges in the Yang Meridians (Yang Jing), causing vomiting, rebellious Qi, dizziness, mental restlessness and depression, sweating with aversion to cold, fever and thirst. If not treated promptly at that time, the Heat will remain latent in the meridians for years without being eliminated, flaring up whenever it is hot, commonly known as "Summer-Qi" (Shu Qi). If severe, the Heat-Toxin enters the interior and combines with the Five Zang Organs. The exogenous pathogen becomes vigorous, leading to stagnation and stasis that cannot be dispersed, resulting in the sudden cessation of Yin Qi and the abrupt blockage of Yang Qi, with unpatency of the meridians and collaterals. Thus, one suddenly falls into a state of coma and suffocation, which is called "Zhong Yue" (Heat Stroke). This is caused by the attack of exogenous pathogens, while the True Zang Qi remains intact. If rescue treatment is received, recovery occurs once Qi circulation is restored. However, in treating Zhong Yue, cold substances must not be used; if cold is applied, it is incurable. This is because external application of cold causes the internal Heat to accumulate and prevents its dispersion.

It is said: The disease of Zhong Yue arises from exposure to Summer-Heat Pathogenic Factors. The pulse is wiry, thin, hollow, or slow. Symptoms include sweating, aversion to cold, fever, thirst, heaviness and pain in the body, chills and piloerection after urination, coldness of the four limbs, fever upon slight exertion, open mouth, and dry teeth. As stated in the classics, a deficient pulse with fever indicates Summer-Heat Injury. In such cases, sweating and purging methods are contraindicated. Sweating will worsen the aversion to cold; applying warm needle therapy will exacerbate the fever; frequent purging will intensify strangury (Lin syndrome). It is appropriate to treat with herbs that eliminate Heat Pathogens.

For treating Middle Heat, presenting with headache, sweating, aversion to cold, fever, and thirst: Baihu Tang (White Tiger Decoction)
Mu Ye (Mother Root, *Anemarrhenae Rhizoma*) - 6 liang
Shi Gao (Gypsum Fibrosum, crushed) - 1 jin
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - 2 liang
Jing Mi (Rice, *Oryzae Fructus Glutinosa*) - 6 he
The above four ingredients. Cut into pieces the size of hemp seeds. Take 5 qian bi per dose, add 1.5 zhan of water, decoct until the rice is cooked. Strain the residue and take warm, three times daily. Another prescription adds Ren Shen (*Panacis Quinquefolii Radix*), 3 liang.

For treating Fu Shu (Latent Summer-Heat) with vomiting and rebellious Qi: Xiao Xiang Ru Tang (Minor Elsholtzia Decoction)
Xiang Ru (Elsholtzia Herb, *Elsholtziae Herba*) - 2 liang
Ren Shen (Ginseng Root, *Panacis Ginseng Radix*) - 1 liang
Bai Bian Dou (White Hyacinth Bean Seed, *Lablab Albus Semen*) - 0.5 liang
The above three ingredients. Coarsely crush and sieve. Take 3 qian bi per dose, add 1 zhan of water, decoct to 0.6 zhan. Strain and take warm, at any time.

For treating Shang Shu (Summer-Heat Injury) and Zhong Yue: Jiedu Wan (Detoxifying Pill)
Ban Xia (Pinellia Tuber, *Pinelliae Rhizoma*) - Soaked in vinegar overnight, drained and dried
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - Honey-fried and cut, each 1 jin
Chi Fu Ling (Red Poria, *Poria*) - Black skin removed, 2 liang
The above three ingredients. Pound and sieve into fine powder. Mix with fresh juice of Sheng Jiang (Fresh Ginger, *Zingiberis Recens Rhizoma*) to form pills the size of Sophora seeds. Take 4 pills, increasing to 8 pills, with fresh well-water. If unconscious or confused, administer with fresh ginger juice.

For treating Shang Shu causing incessant irritability and thirst: Zhu Ru Tang (Bamboo Shavings Decoction)
Zhu Ru (Bamboo Shavings, *Bambusae Caulis in Taenia*) - 1 he (preferably from new bamboo)
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - 1 fen, cut
Wu Mei (Mume Fruit, *Prunae Mume Fructus*) - 2 pieces, cracked
The above three ingredients. Add 1.5 zhan of water, decoct to obtain 0.8 zhan. Strain, let cool to warm temperature, and sip slowly from time to time.

For treating Fu Shu with headache, chest and heart irritability, vertigo, nausea, and loss of appetite: Xiao Bao Long Wan (Minor Dragon-Holding Pill)
Ban Xia (Pinellia Tuber, *Pinelliae Rhizoma*) - Soaked in vinegar overnight, boiled in silver/copper vessel until vinegar is exhausted, then baked
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - Honey-fried and cut, equal parts
The above two ingredients. Pound and sieve into fine powder. Cook thin wheat paste with fresh juice of Sheng Jiang (Fresh Ginger, *Zingiberis Recens Rhizoma*). Form pills the size of Sophora seeds, dry in shade. Take 10 pills with fresh well-water, after meals and before bed.

For treating Zhong Shu (Summer-Heat Stroke) with irritability: Xiang Ru San (Elsholtzia Powder)
Xiang Ru (Elsholtzia Herb, *Elsholtziae Herba*) - 2 liang
The above single ingredient. Pound and sieve into powder. Take 2 qian bi per dose, add 1 zhan of water, decoct to 0.7 zhan. Do not strain, take warm, at any time.

For treating Zhong Shu with irritability, excessive fatigue, and weakness: Xiaoshu San (Summer-Heat Relieving Powder)
Ren Shen (Ginseng Root, *Panacis Ginseng Radix*) - Pounded into powder
Bai Mian (White Wheat Flour, *Tritici Farina*) - Equal amount
The above two ingredients. Mix evenly. Take 2 qian bi per dose, mix with fresh water and ingest, at any time.

For treating Shu Qi (Summer-Qi). Occurs every summer, with weak limbs and loss of appetite: Bing Lang Bing (Areca Nut Cake)
Bing Lang (Areca Seed, *Arecae Semen*) - Cut
Qu Mai (Dianthus Herb, *Dianthi Herba*) - Awns
Xiang Zi (Fennel Fruit, *Foeniculi Fructus*) - Stir-fried
Jing Jie Sui (Schizonepeta Flower Spike, *Schizonepetae Spica*)
Mai Lan Zi (Vicia Seed, *Viciae Semen*)
Da Huang (Rhubarb Root and Rhizome, *Rhei Radix et Rhizoma*) - Baked and cut, each 1 fen
The above six ingredients. Pound and sieve into powder. Use 3 qian of flour to make six cakes. Cook slowly over low fire until done. Chew one cake thoroughly on an empty stomach daily, with warm wine.

For treating Shu Qi: Gan Lu San (Sweet Dew Powder)
Huang Lian (Coptis Rhizome, *Coptidis Rhizoma*) - Mustaches removed, cut, 1 liang
Wu Zhu Yu (Evodia Fruit, *Evodiae Fructus*) - 0.5 liang
The above two ingredients. Stir-fry together until Wu Zhu Yu turns black. Place on the ground to remove fire toxicity. Discard Wu Zhu Yu. Pound Huang Lian into fine powder. Take 0.5 qian bi per dose, after meals, mixed with tea liquor or fresh water.

For treating all latent Heat, irritability, and oppression: Ba Qian San (Smilacis Glabrae Powder) [Note: Text says "Ba Qian", likely referring to Smilax]
Ba Qian (Smilax Rhizome, *Smilacis Glabrae Rhizoma*)
Guan Zhong (Cyrtomii Rhizoma, *Cyrtomii Rhizoma*) - Broken and hair scraped off, each 1 liang
Ren Shen (Ginseng Root, *Panacis Ginseng Radix*)
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - Honey-fried and cut, each 0.5 liang
The above four ingredients. Pound and sieve into powder. Take 2 qian bi per dose, add 1 zhan of water, decoct to 0.7 zhan, take warm. If thirsty due to heat, take cold as a drink.

For treating Shang Shu with chest/diaphragm irritability, fainting, falling, and near-death state: Jiedu San (Detoxifying Powder)
Shang Lu Gen (Phytolacca Root, *Phytolaccae Radix*) - Cut open, those with blood-red color are dried in shade
The above single ingredient. Pound and sieve into powder. Take 1 qian bi per dose, mixed with fresh well-water. For cattle, horses, donkeys, or mules suffering from panting, heat stroke, and falling, mix 3 qian and灌 (administer); it stops immediately.

For treating Shu Du (Summer-Toxicity) and accumulated Heat in the Heart Meridian: Da Huang Wan (Rhubarb Pill)
Da Huang (Rhubarb Root and Rhizome, *Rhei Radix et Rhizoma*) - Cut and stir-fried
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - Honey-fried and cut
Huang Lian (Coptis Rhizome, *Coptidis Rhizoma*) - Mustaches removed
E Shi (Burdock Fruit, *Arctii Fructus*) - Lightly stir-fried
Jing Jie Sui (Schizonepeta Flower Spike, *Schizonepetae Spica*) - Equal parts
The above five ingredients. Pound and sieve into powder. Mix with refined honey to form pills the size of Sophora seeds. Take 20 pills with warm water, after meals. Can also be taken as powder mixed with water.

For treating Shu Du irritability and oppression: Gan Lu Wan (Sweet Dew Pill)
Han Shui Shi (Calcitum, *Calcitum*) - Calcined, cooled, wrapped in silk bag, soaked in well water for 7 days, taken out, dried, and powdered, 4 liang
Tian Zhu Huang (Calculus Bovis, *Calculus Bovis*) - 0.5 liang
Ma Ya Xiao (Natrii Sulfas, *Natrii Sulfas*) - Pulverized, 2 liang
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*)
The above five ingredients. Make into powder. Mix with glutinous rice porridge to form pills the size of a chestnut. Take 1 pill per dose, ground down with ginger and honey water.

For treating Shu Du: Bao Long Wan (Dragon-Holding Pill)
Huang Qin (Scutellaria Root, *Scutellariae Radix*) - Remove black center
Da Huang (Rhubarb Root and Rhizome, *Rhei Radix et Rhizoma*) - Cut and stir-fried
Huang Yao Zi (Dioscorea Bulbil, *Dioscoreae Bulbillum*)
Sheng Gan Di Huang (Rehmannia Root, *Rehmanniae Radix*) - Dried
Lan Gen (Isatis Root, *Isatidis Radix*)
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - Honey-fried and cut, each 1 liang
Xiong Huang (Realgar, *Realgar) - Pulverized, 0.5 liang
Long Nao (Borneolum Syntheticum, *Borneolum Syntheticum*) - Pulverized
She Xiang (Moschus, *Moschus*) - Pulverized, each 1 qian
The above nine ingredients. Make into fine powder. Mix with ox bile to form pills the size of a bullet. Take 1 pill per dose, chewed with cold salt water.

For treating Shu Du with irritability, thirst, mania, vomiting, headache, and fatigue: Bu Hui Mu San (Non-ash Wood Powder)
Bu Hui Mu (Asbestus, *Asbestus*) - 2 liang
Hua Shi (Talcum, *Talcum*)
Han Shui Shi (Calcitum, *Calcitum*)
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - Cut, each 1 liang
Liao Lan Gen (Polygoni Tinctorii Radix) - 1.5 liang
The above five ingredients. Pound raw and sieve into powder. Take 2 qian bi per dose, using raw millet washing water, add rock sugar the size of a date, dissolve and take together, at any time. Prepare avoiding sunlight and fire heat.

For treating Shu Du: Jiu Sheng San (Life-Saving Powder)
Zhi Ma (Sesame Seed, *Sesami Semen*) - Fresh, 3 liang
The above single ingredient. Stir-fry until black, take out, spread in plate to cool, grind into fine powder. Take 3 qian bi mixed with fresh well-water, or form pills the size of a bullet, dissolve one pill in fresh water. Generally, for external summer heat, do not force cold substances upon it; receiving cold leads to death.

For treating Zhong Yue, resolving Shu Du irritability: Bing Hu San (Ice Pot Powder)
Bu Hui Mu (Asbestus, *Asbestus*) - Burned
Xuan Jing Shi (Mirabilite, *Mirabilite*) - Raw and pulverized
Jin Xing Shi (Auripigmentum? Or specific mineral, context implies cooling stone)
Yin Xing Shi (Silver Star Stone)
Ma Ya Xiao (Natrii Sulfas, *Natrii Sulfas*) - Raw, each 0.5 liang
Gan Cao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*) - Honey-fried and cut, 1 liang
Xiao Shi (Nitrums, *Nitrums*) - 1 fen
The above seven ingredients. Each pounded and pulverized into powder. First place Gan Cao in a clay pot (Diao), then add other herbs. Stir-fry for a long time, move to the ground, wait until the pot is cool. Re-pulverize. Take 1 qian bi per dose, mixed with fresh well-water, or ginger juice water.

For treating Middle Heat Formula:
Take 1 spoon of raw flour, mix with boiling water to half a bowl. Cover the bowl with paper. When slightly warm, sip it. Highly effective.