Brain infarction is a type of stroke, and in traditional Chinese medicine (TCM), stroke is categorized as an illness, differentiated as external and internal wind. External wind, as discussed in "Treatise on Cold Pathogenic Diseases," occurs due to external evil invasions, also referred to as the Gui Zhi soup proof. Internal wind belongs to diseases caused by internal injuries, also termed brain stroke or sudden stroke. Commonly, stroke refers to the type caused by internal injuries involving disorders such as the chaos of qi and blood, obstruction of cerebral vessels, or blood overflow in the brain. It is a cerebral neurological disease identified mainly by sudden fainting, hemiplegia, numb limbs, difficult speech, facial distortion, and unilateral numbness. This condition is characterized by a sudden onset, rapid changes, and is akin to the pathogen of wind favoring rapid and multiple changes. The type of stroke discussed here is akin to a brain stroke. Brain infarction refers to the obstruction in a brain artery caused by various emboli such as intracardiac mural thrombi, atherosclerotic plaques, tumor cells, fibrocartilage, or air traveling with the bloodstream. When collateral circulation fails to compensate, it leads to ischemic necrosis of the brain tissue in the supplied area, causing focal neurological deficits. Cerebral hemorrhage, on the other hand, refers to bleeding within the brain tissue not caused by trauma but due to the rupture of intracerebral vessels. Both cerebral hemorrhage and brain infarction often result in varying degrees of motor deficits, cognitive impairments, and speech and swallowing difficulties, collectively referred to in stroke cases. Hence, brain infarction is considered a type of stroke.