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Symptoms are used to diagnose diseases. Without clear syndromes (Zheng), the manifestations of the disease become fragmented, and physicians wielding the scalpel cannot ascertain the deficiency or excess, leading to misapplied treatments. In ancient times, seventy-two syndromes were recorded, which was not considered too simple. Later generations recorded one hundred and sixty, which was not considered excessive. However, if one follows the logic of events and principles to formulate laws but fails to grasp the key pivot, it is like losing a carriage with a south-pointing chariot while crossing the sea, causing people to merely gaze at the vastness in fear. This volume, focusing on "Wind" (Feng), lists eighty-one syndromes, eight of which are seemingly due to wind but are not truly so. The language is concise yet detailed, the meaning profound and unwavering, containing the ultimate Dao of balancing Yin and Yang. Excellent physicians and ministers may well be those who unite these roles. Lu Ting Buchen Zhi wrote this casually.

O Wind, O Wind, you come without cause, failing to resolve my resentment but adding to my sorrow. If the exterior is deficient, wind enters the skin and muscles; if it does not afflict the skin and muscles, it afflicts the Eye Meridians (Mu Xi). It may lead to convulsions and hemifacial paralysis, or upward gazing, often resulting in death. As for the Six Channels (Liu Jing) being affected by wind, pain attacks first settle at the vertex of the head. When wind transforms and medicine becomes ineffective, external symptoms remain untreatable. Blood deficiency and blood heat also generate wind, presenting with varying degrees of dizziness, itching, pain, and tearing. When heat is excessive and generates wind, the disaster is more severe, manifesting as either Nourishing Fat Pterygium (Ning Zhi) or pockmark toxins. Do you not see that fire does not burn without wind? Although the condition is adverse, medication can still be referenced.

This chapter discusses patients suffering from wind diseases that subsequently affect the eyes. Generally, wind belongs to Wood, Wood belongs to the Liver, and the Liver opens into the eyes, originating from a single Qi. Long-standing wind often transforms into heat because Wood generates Fire. Excessive Fire consumes the blood. Moreover, long-term illness causes Qi stagnation, and stagnation generates Fire. Rising Fire generates Wind, creating a cycle of mutual generation. Both internal and external cataracts (Zhang Yi) arise from this. Some have short duration but deep stagnation leading to strabismus; some have shallow stagnation but long duration leading to entropion/ectropion; some have tremors due to blood deficiency and tendon tension; some have internal cataracts formed when Fire pathogens disrupt harmonious Qi; some have red, rotting eyelids due to surging wind and blood, forming瘀肉 (fleshy growths) like chicken combs. Additionally, taking aromatic and drying drugs, and indulging in alcohol and sex, cause further Yin depletion and intensified Fire. As Fire intensifies, Wind becomes fiercer, leading to severe conditions like Hua Bai (flower-white cataract) and Ning Zhi. Treatment should trace the cause upwards. Generally, regulating Qi comes first, clearing Fire second. Otherwise, if the source is not cut off, how can the flow stop? Though temporarily receding now, it will surely return later, requiring repeated treatments. If Wind does not cease and Fire does not extinguish, the eyes will never know peace. Regarding the causes of Stroke (Zhong Feng), Qibo stated there are four major methods: 1. Pian Ku (Hemiplegia): hemiplegia with pain; 2. Feng Fei: no body pain, limbs unable to hold; 3. Feng Ya: sudden loss of consciousness; 4. Feng Bi: various Bi syndromes resembling wind. *Jin Gui Yao Lue · Stroke Chapter* states: The pulse at Cun Kou is floating and tight. Floating indicates deficiency, Tight indicates cold. Deficiency and Cold contend, pathogenic factors do not discharge. If pathogens are in the skin, there is facial deviation and inability to move freely. If in the meridians, there is numbness of skin and muscles. If entering the Fu organs, there is disorientation. If entering the Zang organs, there is difficulty speaking and drooling. Treatments include Da Xiao Xu Ming Tang, Xi Zhou Xu Ming Tang, Pai Feng Tang, and Ba Feng Tang. Li Dongyuan said: Sudden stroke with coma, unconsciousness, abundant phlegm-saliva, and slurred speech is not external wind but a disease of the original Qi. People over forty who suffer from worry, labor, anger, and indignation damaging their Qi often get this syndrome. Obese individuals may occasionally get it even in youth, due to weakness of Middle Qi. Urgently use San Sheng Yin plus one liang of Ren Shen to restore consciousness. Liu Hejian believed that stroke paralysis is not due to excessive Liver Wood wind nor external wind invasion, but indeed due to improper care, sudden surge of Heart Fire, and decline of Kidney Water failing to control it, leading to Yin deficiency and Yang excess, stifled heat, confused spirit, and sudden collapse without awareness. It can also be caused by extreme emotional distress like grief or anxiety, as all extreme emotions generate heat. The common term "wind" refers to the branch while forgetting the root. One must use Di Huang Yin Zi to tonify Yin Fire; once Yin Fire is treated, Yang Fire is easy to subdue. Zhu Danxi said: Stroke involves Qi deficiency or Blood deficiency, where deficiency leads to damp-phlegm. For insufficient pulse on the left side and hemiplegia, use Si Wu Tang as the base with ginger juice and bamboo sap. For insufficient pulse on the right, add Si Jun Zi Tang. For both Qi and Blood deficiency, use Ba Wu Tang plus Tian Nan Xing and Ban Xia. These three masters each revealed what others had not, enhancing previous works, leaving no unexplored aspects of stroke. Some ask how these three, focusing on Fire, Qi, and Dampness respectively, relate to Wind? *Jin Gui* speaks of pathogens, not wind, and of deficiency-cold contention, not wind invasion, yet titles the chapter "Stroke," which is somewhat imprecise. Know that those caused by internal factors are True Stroke (Zhen Zhong Feng). Those caused by Fire, Qi, or Dampness are Similar Stroke (Lei Zhong Feng) rather than true stroke. This requires detailed differentiation for treatment. Differentiated as wind, treat as True Stroke; differentiated as Fire, Qi, or Dampness, treat as Similar Stroke. Although prescriptions may vary in efficacy, these statements are pearls illuminating the night. The teacher said True Stroke never affects the eyes; Similar Stroke only presents with facial deviation. These are words of one who has studied deeply and perceived the Dao. Children's sudden phlegm obstruction, eye rolling, and twitching are due to Water failing to nourish tendons, causing Fire dryness and Wood tension, resembling stroke but with completely different treatment and rapid recovery, so they are not included here.