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Wind pathogen invading the human body originally belongs to exterior syndromes (Biao Zheng). Examining the various wind diseases recorded in *Neijing* (Inner Canon), they all refer to external pathogens. Therefore, there are no descriptions of mental confusion, staring straight ahead with stiff collapse, deviation of the mouth and eyes, lockjaw, slurred speech, aphonia with restlessness, head shaking with foaming at the mouth, copious phlegm and saliva, hemiplegia, paralysis and weakness, tendon and vessel spasm, convulsions and clonic spasms, urinary incontinence, etc. It can be seen that these syndromes were originally not caused by external wind pathogen invasion, but entirely due to internal injury of blood and qi.

When wind pathogen enters from the outside, it must proceed from shallow to deep, gradually worsening, naturally presenting with exterior syndromes. Since there are exterior syndromes, treatment with dispersing methods can be applied. However, what is now called "Zhong Feng" (Apoplexy/Stroke) is different. Merely seeing symptoms such as sudden collapse and coma, or loss of spirit and consciousness, regardless of whether there is an external pathogen, chills and fever, or bone and muscle pain, one indiscriminately calls it Zhong Feng. This error is very serious. Although the *Re Bing Pian* (Chapter on Heat Diseases) mentions a syndrome called Pian Ku (Hemiplegia), stating: "One side of the body cannot move and is painful." This refers to Painful Obstruction (Bi Syndrome) due to pain, not the Zhong Feng discussed today. The *Yin Yang Bie Lun* states: "Disease onset of the three Yin and three Yang meridians leads to Pian Ku and Wei Yi (atrophy and ease/flaccidity), with four limbs unable to lift." This refers to meridian disease, also not the so-called wind disease.

Since Bian Que (Yue Ren) and Zhang Zhongjing, everyone explained wind disease based on external contraction, initially never discussing wind using the concept of "Non-Wind". By the late Han Dynasty, Hua Yuanhua's discussion of Wind of the Five Zang Organs differed slightly from *Neijing*, beginning to mention foaming at the mouth, rigid body, lockjaw, tendon tension, tongue stiffness preventing speech, and uncoordinated hands and feet. However, this was still not far removed. From the Sui and Tang dynasties onwards, works such as Chao Yuanfang's *Zhu Bing Yuan Hou Lun* (Source Book of All Categories of Disease) and Sun Simiao's *Qian Jin Fang* (Prescriptions Worth a Thousand Gold), as well as various schools in Song and Yuan dynasties, listed wind syndromes increasingly numerous and detailed. Thus, the distinction between true wind and non-wind became confused and indistinguishable, further losing its true meaning.

Therefore, I have collected the essentials and listed the syndromes as above. Anything not mentioned in *Neijing* cannot be called a wind syndrome; even if slightly related, one must combine observation, listening/smelling, inquiry, and palpation (Si Zhen - Four Diagnostic Methods). Only when there is truly an external excess pathogen can it be treated as a wind disease; otherwise, the mistake harms people significantly.

1. *Nan Jing* (Classic of Difficult Issues) states: "How many types of Shang Han (Cold Damage) are there? Do their pulses change?" Answer: "Shang Han has five types: there is Zhong Feng, there is Shang Han, there is Shi Wen (Damp-Warmth), there is Re Bing (Heat Disease), and there is Wen Bing (Warm Disease). Their respective sufferings are different."

Examining this statement from *Nan Jing*, the Zhong Feng mentioned here is originally one of the five types of Shang Han. Furthermore, Zhang Zhongjing stated: "In Tai Yang disease (Tai Yang Disease), if there is fever, sweating, aversion to wind, and a slow pulse, it is named Zhong Feng." From this perspective, it can be seen that whenever *Neijing* mentions Zhong Feng, it originally referred to external contraction of cold pathogen. How could later generations mistakenly identify internal injury syndromes attributed to wind as external contraction Zhong Feng?

1. Zhang Zhongjing's *Jin Gui Yao Lue* (Essential Prescriptions of the Golden Cabinet) states: "The disease of wind should present with hemiplegia, or only inability to move one arm; this is Bi Syndrome (Obstruction); the pulse is faint and rapid, caused by Zhong Feng. The Cun Kou (Radial artery at the wrist) pulse is floating and tight; tight indicates cold, floating indicates deficiency. Cold and deficiency interact, with the pathogen in the skin; floating indicates blood deficiency, collateral vessels are empty, evil pathogen is not expelled, affecting either left or right. The area affected by evil pathogen becomes relaxed/hypotonic, while the healthy qi side becomes tense/hypertonic. Healthy qi pulls toward the evil, causing deviation of the mouth and eyes and inability to move freely. If the pathogen is in the collaterals, the skin and muscles become insensate; if in the meridians, heaviness and inability to lift occur; if entering the Fu organs, consciousness is lost and recognition fails; if entering the Zang organs, the tongue becomes stiff making speech difficult, and saliva dribbles from the mouth."

Observing Zhang Zhongjing's discussion on Zhong Feng as above. What he called hemiplegia is Bi Syndrome, referring to conditions like gouty arthritis, attributing it to wind-cold. Similarly, pathogen in the skin, collaterals, meridians, Fu organs, and Zang organs describes progression from shallow to deep, all discussed in terms of external pathogen transmission. Only the syndromes of facial deviation and drooling were not mentioned in the various winds of *Neijing*, but were first proposed by Zhang Zhongjing. Thus, since the Tang and Song dynasties, concepts of Zhong Jing (Wind striking meridians), Zhong Xue Mai (Wind striking vessels/blood), Zhong Fu (Wind striking Fu organs), and Zhong Zang (Wind striking Zang organs) gradually emerged. Consequently, internal injury syndromes such as hemiplegia, Qi collapse, sudden collapse, and Jue Ni (cold extremities/reversal) were all considered Zhong Feng, forgetting the true appearance of genuine wind disease.