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Commentary states: In the disease of cold damage (Shanghan), when the six meridians are invaded by pathogenic factors, transmission initially occurs to the three Yang meridians; if the pathology is at the exterior, diaphoresis (sweating method) may be applied. If more than three days have passed and transmission occurs to the three Yin meridians, where the pathology has entered the interior, purgation (downward-draining method) may be applied. In cases not suffering from simultaneous contraction of cold pathogens (Lianggan Yu Han), without further meridian transmission, and without admixture of heterogeneous qi, by the seventh day, the Taiyang disease declines, with headache slightly alleviated; by the eighth day, the Yangming disease declines, with body heat slightly reduced; by the ninth day, the Shaoyang disease declines, with deafness slightly improving allowing faint hearing; by the tenth day, the Taiyin disease declines, with abdominal fullness subsiding to normal; by the eleventh day, the Shaoyin disease declines, with thirst ceasing, dry tongue resolving, followed by sneezing; by the twelfth day, the Jueyin disease declines, with the scrotum relaxing and lower abdomen slightly easing, while the vital qi is fully restored, and the patient becomes mentally clear and alert. Therefore, recovery from cold damage typically occurs within twelve days. If the illness persists beyond this cycle, it is due to pathogenic heat binding in the interior. Symptoms may include delirious speech, mild depression and irritability, or abdominal fullness with vomiting and diarrhea. These arise from improper treatment causing pathogenic factors to linger, thus preventing resolution after passing through the meridians. Treatment should follow the specific syndrome pattern. If exposed to heterogeneous qi again, transforming into other diseases, it should be treated according to the methods for damaged diseases (Huabing).

For treating cold damage lasting thirteen days, where delirium occurs after passing through the meridians, indicating heat, a decoction for purgation should be administered. If urination is free, stool should be hard; however, if diarrhea occurs instead while the pulse remains harmonious, it indicates the physician used pill-based purgatives, which is incorrect therapy. If natural diarrhea occurs, the pulse should be faint or extremities cold; since the pulse is now harmonious, this indicates internal excess accumulation.

Tiaowei Chengqi Tang (Regulate the Stomach and Bear Down Decoction)
Rhubarb Root (Da Huang, 4 liang, peeled, wine-washed) Licorice Root (Gan Cao, 2 liang, honey-fried)
The above two herbs are cut like hemp seeds. Each dose consists of 5 qianbi, boiled in 1.5 sheng of water until reduced to 0.7 sheng. Strain, add Bitter Salt (Mang Xiao, 1 qianbi), boil for one or two boils, let cool to warm temperature, and take in one dose.

For treating cold damage that has passed its course without resolution, with heat binding in the interior, alternating chills and fever, irritability, thirst, restlessness, and oppression. Xijiao Tang (Rhino Horn Decoction)
Rhino Horn (Xi Jiao, sliced, 1 liang) Bupleurum Root (Chai Hu, de-seeded) Isatis Leaf (Wu Lan) Indigo Naturalis (Da Qing) Cimicifuga Rhizome (Sheng Ma) (each 1 liang) Mume Fruit (Wu Mei, de-stoned) Scutellaria Root (Huang Qin, de-blackened heart)
The above eight herbs are coarsely crushed and sieved. Each dose consists of 5 qianbi, boiled with 1.5 sheng of water and 30 bamboo leaves until reduced to 0.7 sheng. Strain and take warm after meals.

For treating cold damage persisting for half a month without resolution. Biejia Tang (Softshell Turtle Decoction)
Softshell Turtle Shell (Bie Jia, remove skirt, vinegar-fried) Bupleurum Root (Chai Hu, de-seeded) Cimicifuga Rhizome (Sheng Ma) (each 1 liang) Mume Fruit (Wu Mei, de-stoned, 0.5 liang) Immature Bitter Orange (Zhi Shi, remove pith, bran-fried) Rhino Horn (Xi Jiao, sliced) Scutellaria Root (Huang Qin, de-blackened heart, each 1 liang) Licorice Root (Gan Cao, fried, cut, 0.5 liang)
The above eight herbs are coarsely crushed and sieved. Each dose consists of 5 qianbi, boiled in 1.5 sheng of water until reduced to 0.7 sheng. Strain, add Rehmannia Juice (Di Huang Zhi, 2 he) and mix well. Take warm in two doses after meals.

For treating cold damage lasting thirteen days, passing its course without resolution, with umbilical and abdominal distension, dysuria, irritability, and dry thirst. Mutong Tang (Akebia Decoction)
Akebia Stem (Mu Tong, cut) Kudzu Root (Ge Gen, cut) Green Tangerine Peel (Qing Ju Pi, soaked in hot water, white part removed, salt-fried) Areca Seed (Bing Lang, cut) Talcum (Hua Shi) Persicae Semen/Agrostemma Seed? (Qu Mai Sui, note: Qu Mai is Dianthus) (each 1 liang)
The above six herbs are coarsely crushed and sieved. Each dose consists of 3 qianbi, boiled in 1 sheng of water with 2 cun of green onion white until reduced to 0.6 sheng. Strain and take warm, at any time.

For treating cold damage that has passed its course, with chest and epigastric stuffiness and fullness, irritability,狂言 (mad speech), accumulated heat and toxic qi, as well as women's blood wind and blood qi disorders, irregular menstruation, and accumulation of chills and fever. [Formula Name Missing/Erroneous in Text]
Kansui Root (Gan Sui, knotted type) Spirit Flower Root (Wei Ling Xian, cleaned of soil) Trogopterus Dung (Wu Ling Zhi) (each 1 liang)
The above three herbs are pounded and sifted into powder. Each dose is 1 qianbi. For prolonged cold damage with accumulated heat, mix with egg white and honey water. For women's aforementioned conditions, mix with ash from cotton cloth and wine. For ordinary heat, use honey water. For cold patterns, use green onion soup. For Yang toxicity with accumulated heat, add Mercurous Chloride (Ni Fen) and White Cardamom (Bai Ding Xiang), each 0.5 qian, mixed with ginger juice and honey water.

For treating cold damage after sweating and purging, passing its course without resolution, with chest and hypochondriac fullness and binding, thirst without vomiting, only head sweating, alternating chills and fever, and urinary obstruction. Chaihu Tang (Bupleurum Decoction)
Bupleurum Root (Chai Hu, de-seeded, 2 liang) Cinnamon Twig (Gui, remove rough bark) Scutellaria Root (Huang Qin, de-blackened heart, each 1 liang) Oyster Shell (Mu Li, raw) Licorice Root (Gan Cao, fried, each 0.5 liang) Trichosanthes Root (Gua Lou Gen, 1.5 liang) Akebia Stem (Mu Tong, cut, 1 liang)
The above seven herbs are coarsely crushed and sieved. Each dose consists of 5 qianbi, boiled in 1.5 sheng of water with 0.5 fen of crushed fresh ginger and 5 cun of green onion white until reduced to 0.7 sheng. Strain and take warm after meals.

For treating cold damage passing its course without resolution, with stagnation and oppression in the Sanjiao (Triple Burner), heavy body and pain. Bao'an San (Security Powder)
Astragalus Root (Huang Qi, cut) Akebia Stem (Mu Tong, cut) Green Tangerine Peel (Qing Ju Pi, soaked in hot water, white part removed, dried) Mulberry Root Bark (Sang Gen Bai Pi, cut) Atractylodes Macrocephala Rhizome (Bai Zhu) Dried Tangerine Peel (Chen Ju Pi, soaked in hot water, white part removed, dried, each 0.5 liang) Costus Root (Mu Xiang, 3 fen) Black Peony Root? (Hei Qian Niu, 1 liang, fried, pounded to take powder, 0.5 liang)
The above eight herbs are pounded and sifted into powder. Each dose is 2 qianbi, taken mixed with thickly boiled jujube soup.