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Diseases caused by Wind are most prone to misdiagnosis and mistreatment. The cause of such errors lies in the failure to distinguish between exterior (Biao) and interior (Li) patterns. External Wind is contracted from the eight directions (external environment); Internal Wind is a fundamental disease arising from the dysfunction of the five Zang organs. External Wind enters from the outside, initially presenting with symptoms such as fever, aversion to cold, headache, and body ache; this type, caused by external factors, is clearly observable. Internal Wind arises from internal pathology, presenting without any exterior signs, but rather with sudden onset resembling wind-stroke; thus, it can be known that this originates from internal injury. However, since it is not an external contraction, why does the *Huangdi Neijing* (Yellow Emperor's Inner Canon) state: "All sudden stiffness and rigidity belong to Wind"? And "All wind-induced tremors and vertigo belong to the Liver"? This is because the Liver is the organ associated with the East, it stores Blood, and governs Wind Wood Qi. When Blood is diseased, it fails to nourish the sinews (tendons); when sinews are diseased, various manifestations such as tremors, vertigo, stiffness, and rigidity emerge. These are all transformations of Liver Wood Qi, hence they are said to "belong to Wind." The term "belong to" implies that each of the Five Qi has its specific domain, similar to how "all dampness-induced swelling and fullness belong to the Spleen"; the principle is the same. "Zhong" (Struck/Midst) refers to external contraction (Exogenous Wind). "Bu Zhong" (Not Struck) refers to Lei Zhong (Stroke-like syndrome due to internal injury) and internal damage. Therefore, Wang Andao distinguished between Lei Zhong (stroke-like) and Zhen Zhong (true wind-stroke). Later generations failed to understand this principle, not only treating Lei Feng (wind-like) syndromes as true Wind, but also attributing conditions like sudden syncope due to depletion of vital energy to Wind pathogenic factors, which is a grave error! When external pathogens are prevalent, evil qi invades the muscle and surface, resulting mostly in Yang Excess patterns. Internal injuries result from alcohol consumption, sexual excess, overwork, emotional disturbances, or dietary indiscretion, damaging Zang Qi, resulting mostly in Yin Deficiency patterns. When Zang Qi is damaged: Spleen deficiency manifests in the four limbs or with phlegm-fluid retention; Kidney disease may manifest in the marrow or the two yin openings; Heart disease may manifest in the blood vessels or spirit/mind; Lung disease may manifest in Ying-Wei (Nutritive-Defensive) levels or voice; Liver disease may manifest in the sinews or hypochondrium. Thus, Li Dongyuan stated: "In cases of sudden stroke with coma and loss of consciousness, this is not an external pathogen, but a disease of the original Qi itself." Humans are born from Yang and rooted in Yin. When Yang is deficient, Qi declines and dissipates, causing disease in the Yuan Shen (Original Spirit), leading to mental confusion; when Yin is depleted, the physical form deteriorates, causing disease in Jing-Xue (Essence-Blood), leading to flaccidity and paralysis of the limbs. Laypeople, facing conditions where the spirit departs from the form and the body decays, fail to seek the root deficiency and instead treat with wind-dispelling methods, rarely avoiding critical danger. However, external contractions do not absolutely exclude deficiency patterns; Qi deficiency constitutes a deficiency pattern. Internal injuries do not absolutely exclude excess patterns; stagnation constitutes an excess pattern. To treat deficiency, one must ascertain whether the deficiency is in Yin or Yang and tonify directly. To treat excess, one must ascertain whether it is due to Phlegm or Qi stagnation and temporarily open/unblock it. In managing the interplay of internal vs. external, deficiency vs. excess, and purgative vs. tonifying treatments, it is crucial to carefully assess the presence and severity of these factors to match the treatment accordingly. There are even cases where the Original Qi is inherently weak, leading to sudden collapse, with no phlegm above, incontinence below, and blurred vision. This is a syndrome of Jue-Jie (collapse and exhaustion), which has little to do with Wind pathogenic factors. Unless large doses of Shenfu Tang (Ginseng and Aconite Decoction) or moxibustion with seven-year-old mugwort (Qi Nian Zhi Ai) are used to break protocol rules and rescue the patient, how can one hope to restore True Qi at the moment it is about to perish? If one fails to examine for exterior pathogens and differentiate between deficiency and excess, yet merely uses wind-dispelling herbs because the disease name contains "Wind," one ignores the fact that wind-dispelling herbs are mostly drying, and drying further injures True Yin; wind-dispelling herbs are mostly dispersing, and dispersing further injures Original Qi. Treating internal injury as external contraction, and insufficiency as sufficiency, is hastening death. Can one not be cautious?