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Preface: Wind is the leader of all diseases; it follows the patterns of nature, so its onset is sudden and violent. However, in ancient times, discussions on wind primarily focused on external contraction. Later, Liu Hejian emphasized fire, Li Dongyuan emphasized qi deficiency, and Zhu Danxi emphasized dampness, leading to a proliferation of theories regarding wind in later generations. Herein, twenty-three famous formulas are examined, addressing causes related to wind, fire, qi, and dampness. They are applied flexibly according to the specific circumstances at hand, without adhering rigidly to any single theory.

When a patient suffers from stroke with tendon tension and locked jaw (trismus), using iron tools to pry open the mouth may damage the teeth. It is advisable to rub the jaw joint with meat of a dried plum (Wumei). The sour flavor enters the tendons, causing the jaw to feel sore and relaxed, making it easy to open. This is due to the property of sour flavors affecting the tendons first. If a stroke patient presents with an open mouth that cannot close, it indicates the exhaustion of the tendons, which is incurable.

Suiyu Zaojiao (Toxicus Fructus Gleditsiae Sinensis, four strips, skin removed, roasted) and Mingfan (Alumen, one liang, calcined to dryness).
Grind together into powder. Administer three zhi per dose, taken with water.
For a patient suffering from stroke with sudden collapse and profuse phlegm-saliva, administer this medicine to induce frequent vomiting of phlegm-saliva. Once the obstruction is slightly relieved, continue with other medications.
Clear yang resides above, and turbid yin resides below, resembling heaven above and earth below, thus preventing sudden collapse. If turbid pathogens surge upward with wind, clear yang loses its proper position and becomes inverted, causing sudden collapse. Therefore, the accumulation of phlegm-saliva is caused by excessive wind and surging qi. The Classics state: "When disease manifests with deficiency, treat the branch (symptoms) first, then the root." Thus, instead of initially dispersing wind and tonifying deficiency, we first induce vomiting to expel phlegm-saliva. Alumen tastes salty and bitter; saltiness can soften stubborn phlegm, and bitterness can induce vomiting of phlegm-saliva. Toxicus Fructus Gleditsiae Sinensis tastes acrid and salty; acridity can unblock orifice passages, and saltiness can remove filth. Named "Xi Xian San" (Thin Saliva Powder), it acts like vanguard troops seizing a gate. The Master said: "Whenever inducing vomiting of phlegm in stroke patients, stop once the throat is cleared and the patient can take liquid food. If all phlegm is completely expelled, there will be no fluids to nourish the tendons, leading to spasms and hemiplegic emaciation. This is a major prohibition!"

Liblu (Veratrum Nigrum Rhizoma), Sheng Gancao (Raw Radix Glycyrrhizae), Chuanxiong (Rhizoma Chuanxiong), Xixin (Herba Asari), Renshen (Radix Ginseng) (each one qian), Shigao (Gypsum Fibrosum) (five qian).
Grind together into powder.
For a patient suffering from stroke with loss of consciousness and locked jaw, blow one zhi of this powder into the nose. If the patient sneezes, it indicates that Lung Qi has not yet failed, and the condition is treatable.
Stroke resulting in loss of consciousness is an urgent condition. Mild medicines cannot resolve the obstruction, so Liblu is used in opposition to Renshen and Xixin, utilizing their contradictory properties for therapeutic effect. The Lung dislikes rebellious Qi, so heavy Gypsum Fibrosum is used to descend it, and mild Raw Radix Glycyrrhizae is used to moderate it. The use of Rhizoma Chuanxiong is merely to utilize its ability to clear Qi and unblock orifices.