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Discussion states: Physical exposure to cold and consumption of cold drinks. Internal and external pathogens combine. Consequently, they lodge within the body. This results in Lung cough (Fei Ke). The Lung governs Qi (Qi) and externally connects with the skin and hair (Pi Mao). Its meridian circles around the upper opening of the stomach.
Therefore, exposure to cold internally or externally can both injure the Lung. Leading to Cold Cough (Leng Sou). Its manifestations include breathing with cold air, a sensation in the mouth as if drinking ice and snow, vomiting of cold phlegm froth, and urgent pain in the chest. Symptoms are quiet during the day and severe at night. They cease upon warming and flare up upon exposure to cold.

For treating Lung affected by cold pathogen, with incessant coughing, Wuwei Zi Tang (Five-Flavor Berry Decoction):
Wuweizi (Fructus Schisandrae Chinensis, fried), Renshen (Radix Ginseng), Huangqi (Radix Astragali Membranacei, cut into pieces), Ejiao (Colla Corii Asini, fried until dry), Guizhi (Ramulus Cinnamomi, coarse bark removed), Shudihuang (Radix Rehmanniae Preparata, baked, each half liang), Ziwan (Herba Asteris Tatarici, roots and soil removed), Ganjiang (Rhizoma Zingiberis Recens, processed until cracked), Xingren (Semen Armeniacae Amarum, soaked in water, peel and pointed end removed, double-kernel, fried, each one fen), Baizhu (Rhizoma Atractylodis Macrocephalae), Zisuye (Folium Perillae, each one and a half fen).
The above eleven ingredients are coarsely crushed and sieved. Each dose consists of three qianbi (approx. 3-5 grams), boiled in one zhan (approx. 200ml) of water until reduced to seven-tenths. Strain the dregs and take warm, regardless of time. Three times daily.

For treating Cold Cough, Ganjiang Tang (Dried Ginger Decoction):
Ganjiang (Rhizoma Zingiberis Recens, two liang, processed until cracked), Ziwan (Herba Asteris Tatarici, half liang, roots and soil removed), Mahuang (Herba Ephedrae, two liang, joints removed), Xingren (Semen Armeniacae Amarum, thirty kernels, peel and pointed end removed, bran-fried), Guizhi (Ramulus Cinnamomi, coarse bark removed), Gancao (Radix Glycyrrhizae Preparata, honey-fried and cut into pieces, each one liang), Wuweizi (Fructus Schisandrae Chinensis, half liang).
The above seven ingredients are chopped like hemp seeds. Each dose consists of five qianbi, boiled in one and a half zhan of water until reduced to eight-tenths. Strain the dregs and take warm. Three times daily.

For treating Cold Cough, Ejiao Tang (Donkey-Hide Gelatin Decoction):
Ejiao (Colla Corii Asini, fried until dry), Wuweizi (Fructus Schisandrae Chinensis), Mahuang (Herba Ephedrae, joints removed), Chenpi (Pericarpium Citri Reticulatae, soaked in water, white pith removed, baked, each one liang), Gancao (Radix Glycyrrhizae Preparata, honey-fried and cut into pieces), Xingren (Semen Armeniacae Amarum, soaked in water, peel and pointed end removed, double-kernel, fried, each half liang).
The above six ingredients are coarsely crushed and sieved. Each dose consists of three qianbi, boiled in one zhan of water with three slices of Shengjiang (Rhizoma Zingiberis Recens). Reduce to seven-tenths. Strain the dregs and take warm, regardless of time.

For treating Lung cold, with cough, wheezing, and chest fullness, Xixin San (Asarum Powder):
Xixin (Herba Asari, roots and leaves removed), Gancao (Radix Glycyrrhizae Preparata, honey-fried and cut into pieces), Ganjiang (Rhizoma Zingiberis Recens, processed until cracked), Wuweizi (Fructus Schisandrae Chinensis, each three liang), Chifuling (Poria cum Radice Pini, black skin removed, four liang).
The above five ingredients are pounded and sifted into powder. Each dose consists of two qianbi, taken with boiling water. Three times daily.

For treating chronic cough due to Lung cold, Sishun San (Four-Compliance Powder):
Ganjiang (Rhizoma Zingiberis Recens, processed until cracked), Gancao (Radix Glycyrrhizae Preparata, honey-fried and cut into pieces), Chenpi (Pericarpium Citri Reticulatae, soaked in water, white pith removed, baked), Xingren (Semen Armeniacae Amarum, soaked in water, peel and pointed end removed, double-kernel, fried, separately ground).
The above four ingredients are in equal proportions. Except for Xingren, pound and sift into powder. Add Xingren and grind evenly. Each dose consists of one qianbi, taken with boiling water, on an empty stomach before meals. Three times daily.

For treating all types of Cold Cough, Wusou Wan (Five-Cough Pills):
Zaojia (Fructus Gleditsiae Sinensis, peel and seeds removed, coated with butter and roasted), Ganjiang (Rhizoma Zingiberis Recens, processed until cracked), Guizhi (Ramulus Cinnamomi, coarse bark removed).
The above three ingredients are in equal proportions. Pound and sift into powder. Mix with refined honey to form pills the size of Sophora japonica seeds. Each dose consists of ten pills, taken with rice drink, regardless of time.

For treating Cold Cough, Jiangyi Jian (Ginger and Maltose Paste):
Ganjiang (Rhizoma Zingiberis Recens, three liang, processed until cracked and made into fine powder), Jiaoyi (Maltose, one jin).
The above two ingredients are mixed well. Place in a porcelain vessel and steam over rice until thoroughly cooked. Each dose is the size of a date pit, held in the mouth to dissolve and swallow the saliva. Three times daily, twice at night.

For treating Cold Cough with cold breath, vomiting of cold phlegm, and urgent chest pain, Xingren Wan (Apricot Kernel Pills):
Xingren (Semen Armeniacae Amarum, one sheng, peel and pointed end removed, double-kernel, fried until yellow), Shengjiang (Rhizoma Zingiberis Recens, one jin, peeled, sliced, and sun-dried), Chenpi (Pericarpium Citri Reticulatae, soaked in water, white pith removed, baked, five liang).
The above three ingredients are pounded and sifted into powder. Mix with refined honey to form pills the size of Sophora japonica seeds. Each dose consists of twenty to thirty pills, taken with warm wine, regardless of time.