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Exterior heat and interior heat are distinct. Exterior heat is characterized by continuous fever throughout the day, or limb stiffness with coldness, accompanied by symptoms such as clear nasal discharge, cough, headache, and nasal congestion. Internally, the pulse is floating without thirst; this is a syndrome of exterior resolution (pathogenic factors located in the body surface). Cold-natured medicines should not be used; instead, Jingfang San (Schizonepeta and Saposhnikovia Powder) should be employed to release the exterior. Recovery occurs naturally after sweating.

Interior heat manifests as tidal fever at night or periodic fever that is lighter during the day and heavier at night; the condition is most lingering and difficult to cure. Symptoms may include thirst, abdominal distension, or night sweats. These syndromes vary depending on whether they are caused by food stagnation leading to palpable masses, latent dryness, latent fire, yin deficiency, or yang deficiency. They must be treated separately; this is a syndrome of interior resolution (pathogenic factors located within the body), and exterior-releasing medicines should not be used. For food stagnation, Baohe Wan (Preserve Harmony Pill) plus Goubipi (Cortex Lycii) is used to resolve stagnation; for food retention causing masses, Hezhong Wan (Harmonize the Middle Pill) plus Biejia (Carapax Trionycis) and Muli (Concha Ostreae) is used to dissipate masses; for latent dryness, Beimu Gualou San (Fritillaria and Trichosanthes Powder) is used to moisten; for latent fire, Huangqin Shaoyao Tang (Scutellaria and Peony Decoction) plus Shanzhi (Fructus Gardeniae) and Danpi (Cortex Moutan) is used to clear heat; for yin deficiency, Aopi Siwu Tang (Lycium Bark and Four Substances Decoction) is used to retreat heat by nourishing yin; for yang deficiency, Sijunzi Tang (Four Gentlemen Decoction) is used to nourish yang. Such heat inevitably damages yin, leading to gradual emaciation of the mouth and face, eventually forming Gan Lao (infantile malnutrition and consumption disease); caution is required.

In internal medicine pulse diagnosis, there are various syndromes such as cold damage and heatstroke. Contemporary physicians often confuse these with Zhongfeng (Wind Stroke). Li Dongyuan and Zhang Jingyue correctly distinguished them as Feifeng (Non-Wind), which was an excellent approach. In pediatrics, there are two syndromes called Jijing Feng (Acute Convulsive Wind) and Manjing Feng (Chronic Convulsive Wind). These have no relation to the character "Jing" (Fright), nor should the character "Feng" (Wind) be loosely applied. However, due to the existence of the name "Convulsive Wind," pills are indiscriminately administered, resulting in countless pediatric casualties from such mismanagement. Consider what "Jing" means: it refers to fright. Fright causes the loss of spiritual control, mental confusion, fear, and palpitations, affecting only those with heart qi deficiency. This also occurs in internal medicine; the pediatric syndrome of sudden severe fright corresponds to this pattern. This is true fright, so treatment should primarily use herbs such as Renshen (Radix Ginseng), Wuweizi (Fructus Schisandrae), Zaoren (Semen Ziziphi Spinosae), and Danshen (Radix Salviae Miltiorrhizae) to calm the spirit and stabilize the soul. There is absolutely no method of resolving phlegm or dispersing wind that can treat fright syndromes.

Furthermore, "Feng" (Wind) has two meanings: in exogenous diseases, it refers to Wind Pathogen, which requires exterior-releasing methods; in endogenous diseases, it refers to Liver Wind, which requires calming and extinguishing methods. Now, confusingly calling it all "Wind," one must ask: is it exterior wind or interior wind? Medicines for exterior wind cannot treat liver conditions, and medicines for liver wind cannot release the exterior. How chaotic this is! The so-called Acute Convulsive Wind in popular understanding is actually Phlegm-Fire Obstruction. When children contract summer-heat, fire is generated; when milk accumulates, phlegm is produced. Phlegm and fire struggle against each other, leading to blood deficiency and liver malnourishment. The liver governs the sinews; if liver heat affects the sinews, convulsions occur. Thus, exterior manifestations include stiffness and cyanotic complexion, indicating dry liver and internally generated wind, not exterior wind. This is phlegm-fire obstructing the orifices, causing eye deviation, clenched teeth, and syncope, not fright. By opening the orifices, clearing fire, and descending phlegm, consciousness will return. This syndrome can recover spontaneously even without treatment; how can it be improperly named Convulsive Wind?

The so-called Chronic Convulsive Wind in popular understanding is Wind generated by Spleen Deficiency. If children suffer from vomiting or diarrhea for a long time, spleen deficiency results, allowing Liver Wood to overact upon Spleen Earth, causing slight twitching of hands and feet. This is interior wind insulting Earth, not exterior wind. Yang decline and mental fatigue with short breath indicate the collapse syndrome of Wind Stroke, not fright. Treatment should tonify the spleen and restore yang, thereby strengthening Earth and calming Wood. This syndrome will lead to death if not tonified; how can it be erroneously named Convulsive Wind? Therefore, Acute Convulsion is essentially a Fire Syndrome, while Chronic Convulsion is a Deficient-Cold Syndrome, just as water and fire differ. Medicines for acute convulsion cannot treat chronic convulsion, and vice versa. Yet, there exists a pill named "Treatment for Acute and Chronic Convulsive Wind." Is this deceiving people or Heaven? Hereby, I expose this fallacy as "Non-Fright," classifying them into Phlegm-Fire Obstruction Syndrome and Wood Insulting Earth Syndrome. Treating them according to excess or deficiency and seeking their root causes will prevent unnecessary deaths among children.