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The *Jin Gui Fang Lun* (Treatise on Formulas of the Golden Cabinet) states: When heat is located in the upper jiao, coughing develops into Fei Wei (Lung Atrophy). This condition arises from excessive sweating, vomiting, Xiao Ke (Wasting and Thirsting Syndrome) causing frequent urination, or constipation followed by misapplication of harsh purgatives leading to diarrhea, thereby severely depleting body fluids. Consequently, the Cun Kou pulse is rapid; the patient coughs and has turbid saliva and froth in the mouth, which indicates the disease of Fei Wei. If the mouth is dry, coughing is accompanied by dull pain in the chest, and the pulse is slippery and rapid, this is Fei Yong (Lung Abscess); coughing up pus and blood with a rapid and deficient pulse indicates Fei Wei, while a rapid and excess pulse indicates Fei Yong.

Commentary: The aforementioned statement posits that Fei Wei belongs to the heat category. For instance, prolonged coughing leading to lung atrophy, hoarseness, and hemoptysis belongs to Yin deficiency with fire hyperactivity, which is highly accurate. In this treatise, the treatment for Fei Wei presenting with salivation without coughing, where the patient is not thirsty but suffers from enuresis and frequent urination, is attributed to upper jiao deficiency cold failing to control the lower jiao. This belongs to cold in the lungs, inevitably accompanied by dizziness and profuse saliva/phlegm, treated with Zhi Gan Cao Gan Jiang Tang (Roasted Licorice and Dried Ginger Decoction), which falls under the cold category. If Fei Wei presents with excessive saliva/phlegm and a sensation of warmth in the heart (Wen Ye), Zhi Gan Cao Tang (Roasted Licorice Decoction) is used, which tonifies deficiency and exhaustion; this differs from tonifying Yin deficiency with fire hyperactivity. All these conditions require distinct treatments; thus, Fei Wei also exhibits differences between cold and heat.

Xiao Feng Bai Jie San (Eliminate Wind Hundred-Resolution Powder) from *Ju Fang* treats cough, heavy voice, fever, and headache.
Commentary: These are herbs acting on the Hand Taiyin Lung Meridian and Hand Yangming Large Intestinal Meridian.

Jin Fei Cao San (Golden Whorlwort Decoction) treats cough due to wind-cold invasion, headache, and heavy voice (formula see Shang Feng Men/Wind-Cold Section).
Commentary: These are herbs acting on the Hand Taiyin Lung Meridian and Foot Taiyin Spleen Meridian.

Bai Du San (Decoction for Resisting Toxins) treats phlegm-cough, fever, and nasal congestion.
Herbs: Chai Hu (Bupleuri Radix), Qian Hu (Peucedani Radix), Qiang Huo (Notopterygii Rhizoma et Radix), Du Huo (Angelicae Pubescentis Radix), Jie Geng (Platycodonis Radix), Zhi Ke (Aurantii Fructus Immaturus), Fu Ling (Poria), Gan Cao (Glycyrrhizae Radix et Rhizoma), Ren Shen (Ginseng Radix), Chuan Xiong (Chuanxiong Rhizoma) (all in equal parts).
Preparation: Coarsely crushed, decocted in water; take 1 liang or half a liang per dose.
Commentary: These are herbs acting on the Foot Taiyang Bladder Meridian, Foot Shaoyang Gallbladder Meridian, and Hand Taiyin Lung Meridian.

He Zi Sou Feng Wan (Master He's Wind-Searching Pill) (formula see Zhong Feng Men/Stroke Section).
Commentary: These are herbs acting on the Hand Taiyin Lung Meridian, Hand Yangming Large Intestinal Meridian, and Foot Taiyang Bladder Meridian.
Commentary: All the above formulas originate from the Taiyang meridian exterior-resolving methods, but this pill is a formula for purging damp-heat phlegm; essentially, it represents a variation of sweating and purging methods.

Xiao Qing Long Tang (Minor Blue Dragon Decoction) treats cough due to wind-cold invasion with unresolved exterior syndrome, fluid retention in the epigastrium, or wheezing (formula see Tan Yin Men/Phlegm-Fluids Section).
The *Jin Gui* formula treats cough with a floating pulse; remove Shao Yao (Paeoniae Radix Alba), add Hou Po (Magnoliae Officinalis Cortex), Xing Ren (Armeniacae Semen Amarum), Shi Gao (Gypsum Fibrosum), and Xiao Mai (Tritici Granum).
Jian Yi Jiu Bao Tang (Simple Nine-Treasures Decoction) treats cough, fever, wheezing, and aversion to cold.
Herbs: Ma Huang (Ephedrae Herba), Bo He (Menthae Haplocalycis Herba), Chen Pi (Citri Reticulatae Pericarpium), Gui Xin (Cinnamomi Ramulus), Zi Su (Perillae Folium), Xing Ren (Armeniacae Semen Amarum), Gan Cao (Glycyrrhizae Radix et Rhizoma), Sang Bai Pi (Mori Cortex), Da Fu Pi (Arecae Pericarpium) (all in equal parts).
Preparation: Coarsely crushed, decocted with Sheng Jiang (Zingiberis Rhizoma Recens) and Cong Bai (Allii Fistulosii Bulbus).
Commentary: These are herbs acting on the Hand Taiyin Lung Meridian and Foot Taiyang Bladder Meridian.