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Zi He (Zhang Zihé) stated: The treatment for the wealthy and the poor cannot follow a single path. For the wealthy, all phlegm-rheum coughs are caused by consuming rich and flavorful foods, leading to the formation of heat-phlegm. Initially, Dusheng San (Single Sovereign Powder) should be used to induce vomiting. After vomiting, Renshen San (Ginseng Powder) or Tongsheng San (Supreme Unity Powder) with added Banxia (Pinellia Rhizome) can be taken to stop the cough, followed by Dafuren Shen Banxia Wan (Large Ginseng Pinellia Pill) to resolve phlegm. One must avoid sour, salty, greasy, raw, hard, and hot-natured foods.

For the poor, coughs are caused by external contraction of wind-cold-dampness. The *Neijing* states: "Injury by dampness in autumn leads to cough in winter." Ning Shen San (Spirit-Calming Powder) or Ning Fei San (Lung-Calming Powder) with added Baizhu (Atractylodes Rhizome) can be taken to achieve recovery. (The dietary restrictions are the same as mentioned above.)

Zi He once treated a woman suffering from cough; it was already the tenth month. Dai Ren (Zhang Zihé's courtesy name) prescribed six herbs: Chenpi (Tangerine Peel), Danggui (Angelica Sinensis Root), Gancao (Licorice Root), Baizhu (Atractylodes Rhizome), Zhike (Bitter Orange Fruit), and Jiegeng (Platycodon Root). Her husband suspected these were not typical cough medicines. Dai Ren smiled and said, "Are you surprised that there is no Wumei (Mume Fruit) or Ying Su Ke (Poppy Capsule)? Winter cough is due to autumn dampness; dampness rises upward causing cough. This formula moves qi, removes dampness, relieves urgency, and harmonizes the meridians. After three doses, the symptoms subsided, and it was effective."

Another case involved a forty-year-old man suffering from consumptive cough with hemoptysis. His sputum was sticky, foul-smelling, and unbearable. Symptoms eased slightly in autumn and winter but worsened in spring and summer. He experienced alternating chills and fever, occurring daily at dusk, resembling malaria (Nue, 疟疾), and suffered from night sweats profuse as water. Repeated use of Mahuang Gen (Ephedra Root) and Bai Pu Shan (Withered Cattail Leaves) failed to stop the sweating, and Ning Shen San and Ning Fei San failed to stop the cough. Dai Ren first used Dusheng San to vomit out his phlegm. The expelled phlegm resembled chicken yolk juice. Following the vomiting, he remained comatose and unconscious for three days. During this time, cool water was administered intermittently, after which his spirit gradually cleared and his appetite improved. Subsequently, Renshen Banxia Wan (Ginseng Pinellia Pill) and Guiling Ganlu San (Cassia-茯苓 Sweet Dew Powder) were given. Within a few doses, he recovered.

The book *Yanyi* records a case where a person suffered from qi-phlegm nearly causing obstruction. Someone advised roasting Chenpi (Tangerine Peel) and Shengjiang (Fresh Ginger), mixing them with Shenqu (Medicated Leaven) in equal parts, grinding into powder, and forming pills the size of Sophora seeds. Taken with rice water after meals and before bed, fifty pills per dose, both this condition and his pre-existing bladder qi disorder were cured.

Another case involved a woman with chronic cough due to lung heat. Her body felt as if roasted by fire, and she was emaciated, approaching consumption. She was treated with Pipa Ye (Loquat Leaf), Mutong (Akebia Stem), Kuandonghua (Coltsfoot Flower), Ziwan (Aster Root), Xingren (Apricot Seed), Sangbaipi (Mulberry Root Bark) in equal proportions, and half the amount of Dahuang (Rhubarb Root and Rhizome). These were ground into fine powder and formed into honey pills the size of cherries. One pill was held in the mouth to dissolve slowly after meals and before sleep. She recovered before finishing one course of treatment.