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Yun Qizi stated: Qian Yi (Qian Shi) used Xuanfeng San (Disperse Wind Powder), which consists of three ingredients, none of which are herbs for treating wind pathogens; it merely bears the name of treating wind diseases. One should add Fangfeng (Saposhnikoviae Radix) as a single ingredient, akin to employing a vanguard in an army. In syndrome differentiation, if loose stools with undigested food occur, it indicates heat; if loose stools contain hardened masses, it is due to excessive purgation by Xuanfeng San causing cold. Each must recognize its cold or heat nature before carefully selecting medications. Xiexie Bai San (Drain White Powder) also lacks the rationale for draining lung heat. Adding Huanglian (Coptidis Rhizoma) makes it correct for draining lung heat. The *Neijing* states: "The Lung dislikes rebellious Qi; urgently consume bitter substances to drain it." Thus, Qian Yi himself mentioned decocting together the sovereign and minister herbs entering the zang organs, implying he was concealing his method within this statement.

[Duoming San] Treats lung distension with wheezing and fullness. Symptoms include high chest, rapid breathing, flapping of the two hypochondria like fans, sunken intercostal spaces forming pits, dilated nostrils, mental confusion, coughing with thirst, hoarseness or loss of voice, and tidal accumulation of phlegm and saliva. If not treated urgently, death may occur at dawn or dusk.
Chuan Dahuang (Rhei Radix et Rhizoma), Baidianqiu (Bunge's Morning Glory Seed), Heidianqiu (Black Morning Glory Seed) (each 1 liang, half raw and half processed); Da Binglang (Arecae Semen) (one fruit).
Grind the above into powder. For a three-year-old child, administer 2 qian, mixed with cold Jiangshui (fermented grain water). If there is excessive phlegm, add a small amount of Nifen (Calomel). Continue until phlegm is discharged. This formula originates from Yang Shi's Ji Ji Fang.

[Wujia San] Treats wheezing and restlessness caused by wind-heat.
Chensha (Cinnabar) (2.5 qian), Qingfen (Calomel) (0.5 qian), Gansui (Kansui Root) (1.5 qian, wrapped in flour, slightly boiled then dried).
Grind the above into powder. Take one "yi zi" dose each time. Use a small amount of warm water, drip a drop of oil into it. Place the medicine on top of the oil so that it sinks to the bottom. Administer with Jiangshui (fermented grain water). The effect is immediate and miraculous.

Pediatric acute and chronic convulsions did not exist in ancient times; they were only called Yin-Yang Epilepsy (Yin Yang Xian). The terms acute and chronic convulsions were named by later generations, similar to the distinction between red and white dysentery. Yang moves quickly, so Yang disease is called Acute Convulsion (Ji Jing). Yin is still and slow, so Yin disease is called Chronic Convulsion (Man Jing). These are distinctions of Yin/Yang, Deficiency/Excess, and Cold/Heat; treatment must not be mistaken. Acute convulsion arises from internal heat; extreme heat generates wind, or it may be triggered by fright. Symptoms include blinking eyes, tidal salivation, spasms, and heat in the body and breath. When the attack subsides or upon waking, the child returns to normal consciousness. This is the syndrome of acute convulsion. When the spasm gradually decreases, administer one or two doses of heart-calming and heat-clearing agents. After the convulsive state stabilizes, use medication to purge phlegm-heat. Once phlegm-heat is purged and the mind settles, recovery occurs. Chronic convulsion occurs after severe illness, vomiting, or diarrhea, or due to erroneous use of emetics or purgatives, leading to Spleen-Stomach deficiency and damage, allowing wind pathogens to invade. Symptoms resemble spasms but are mild, termed "You Ku" (slow twitching). The child appears sleepy but lethargic, with cold limbs and breath. Eyes may remain open during sleep, or stomach pain may cause crying with a crow-like sound. This condition is critical due to Spleen-Stomach deficiency.