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The syndrome of "Jing Feng" (Convulsions with Wind) has long been misunderstood. This is because infants and young children have not yet fully developed their muscles, bones, tendons, zang-fu organs, and blood vessels. Their Yang Qi is relatively excessive, while their Yin Qi is insufficient, which differs from adults whose bodies are seven chi tall and possess both abundant Yin and Yang. Precisely because Yin is insufficient and Yang is excessive, heat easily generates internally. When heat becomes severe, it generates phlegm, wind, and Jing (fright/convulsion), which is a common occurrence. If the name had originally been established directly using the four characters "Re" (Heat), "Tan" (Phlegm), "Feng" (Wind), and "Jing" (Fright), later generations would not have found it dazzling or novel. Since these four characters were inconvenient for naming, two were omitted, placing "Jing" at the beginning and "Feng" at the end, rendering it incomprehensible to later generations and leading them to regard it as a peculiar disease.

Furthermore, it is claimed that this disease presents with eight signs: because the head shakes and hands spasm, the name "Chou Che" (Twitching and Pulling) was established; because of sudden jaw locking and leg cramping, the name "Mu Xie Xin Luan Chu Nuo" (Oblique Eyes, Chaotic Heart, Twitching and Grasping) was established; because of spinal rigidity and back arching, the name "Jiao Gong Fan Zhang" (Opisthotonos) was established. These traditions have persisted for a long time, and people do not realize they are fabricated. Whenever such symptoms appear, they are invariably considered peculiar.

They fail to realize that children's Cou Li (pores and interstitial spaces) are not dense, making them susceptible to Wind-Cold pathogens. When Wind-Cold invades the body, it first enters the Taiyang Channel (Foot-Taiyang Bladder Meridian). The Taiyang channel originates from the inner canthus, ascends to the forehead and intersects at the vertex, enters to connect with the brain, emerges again, descends separately along the neck, flanks the spine, and reaches the middle of the waist. Therefore, when diseased, the channels become rigid. Due to this channel tension and spasm, symptoms such as twitching, pulling, grasping, and opisthotonos occur.

Under these various names, mineral-based drugs are used for sedation and suppression, causing external pathogens to penetrate deeply into the Zang-Fu organs. Treatment fails in thousands of cases, resulting in death. Occasionally, those with strong constitutions and mild symptoms recover. Physicians marvel at this as a miraculous achievement, leading each school to adhere strictly to their specialties. Although many children die daily, they remain unaware of their guilt.

For instance, medical texts state: "Children under eight years old do not suffer from Shang Han (Cold Damage)." Such nonsensical statements come from so-called experts, inadvertently supporting the theory of Jing Feng. They fail to consider that children's muscles are soft and fragile, intolerant of Wind-Cold. Upon initial invasion of the Taiyang channel, symptoms such as body rigidity, profuse sweating, tendon movement, and mental confusion already appear, indicating the pathology is extreme within this primary channel. With indiscriminate prescription of decoctions, deaths follow closely. How could one observe the transmission of pathogenic factors to other channels? This is why it is erroneously said that children do not suffer from Shang Han. In reality, children are prone to external contraction and fever, with Shang Han being particularly common. What the world calls "Jing Feng" is precisely this condition. For children suffering from Shang Han, recovery within three days is crucial; if one waits until the channel cycle completes before resolution, the child certainly cannot endure it.

Additionally, Gang Jing (Yang Spasm characterized by anhidrosis) presents without sweat, while Rou Jing (Yin Spasm characterized by hyperhidrosis) presents with sweat. Children rarely suffer from Gang Jing but frequently from Rou Jing. When physicians see continuous sweating and unconsciousness, they often diagnose it as Man Jing Feng (Slow Convulsions) and administer herbs such as Renshen (Ginseng Radix et Rhizoma), Fuzi (Aconiti Lateralis Radix Praeparata), and Baizhu (Atractylodis Macrocephalae Rhizoma). This closes the Cou Li, preventing Heat pathogens from venting outward, causing great harm.

Therefore, when treating heat in children, one should thoroughly guide it out through the exterior, not allow it to sink inward. Zhang Zhongjing originally provided Guizhi Tang (Cinnamon Twig Decoction). Abandoning it to treat based on Li Dongyuan's theories of Internal Injury is a deviation of a hair's breadth resulting in a thousand-mile error, requiring utmost caution.

Furthermore, postpartum women who have lost excessive blood suffer from Yin deficiency and Yang hyperactivity. Their cold-induced fever is originally no different from that in children. Physicians pass down the term "Postpartum Jing Feng," which is laughable.

However, children do indeed suffer from genuine Jing Feng. At ages one or two, when Qi is timid and Spirit is weak, encountering strange shapes or sounds, or sudden falls, induces fright and fear. Signs include a cyan face and cyan stool, irritability, and frequent crying. Slight stimuli cause shivering and constant fearfulness. This differs from Heat pathogens blocking orifices, causing coma where the patient does not hear loud noises like bells or cannons nearby. Careful deliberation allows one to distinguish this, recognizing the errors of historical mixed treatments.