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When pathogenic factors of Shanghan (Cold Damage) invade the Yin meridians, the disease is located in the interior. The treatment method should be purgation. For any cases presenting with abdominal fullness and constipation, or dry mouth and tongue with thirst, or tidal fever and delirium.

Purgative Method
Heat Syndrome
If... syndrome
Da Chai Hu Tang (Major Bupleurum Decoction) is used for purgation. If the pulse is deep and short, with tongue retraction and testicular contraction, this indicates that toxic vapors have entered the zang organs; Cheng Qi Tang (Ordering the Qi Decoction) should be used for purgation. If there are cold extremities, deafness, and testicular contraction, with a deep and wiry pulse, this indicates simultaneous involvement of the Shaoyang (Lesser Yang) and Jueyin (Terminal Yin) meridians. Furthermore, if Jueyin disease presents with diarrhea and delirium, but the pulse is not fine and minute, Xiao Cheng Qi Tang (Minor Ordering the Qi Decoction) is appropriate.

Tiao Wei Cheng Qi Tang (Regulate the Stomach Ordering the Qi Decoction) (from *Shengji Zonglu*) treats Yangming disease. In cases where neither vomiting nor purgation has been applied, and the patient suffers from mental restlessness, Tiao Wei Cheng Qi Tang may be administered.
In Taiyang (Greater Yang) disease persisting for three days, if sweating fails to resolve the condition and there is steaming heat, Tiao Wei Cheng Qi Tang may be given. After vomiting in Shanghan, if abdominal fullness occurs, this formula can be used. For cases treated with sweating and harmonizing methods, where chills are absent but fever persists with a steaming sensation, or after prolonged illness, with a warm sensation in the epigastrium suggesting nausea, chest pain, loose stools, abdominal fullness, and slight depression/irritability, these result from extreme vomiting and purging. Or after prolonged illness, delirium during sleep requires purgation. However, using highly toxic pills containing Silver Powder (Fen Shui), Croton Seed (Ba Dou), etc., which are drying and hot, damages True Yin and exacerbates pathogenic heat, leading to unceasing diarrhea with accompanying heat. Also, if exterior heat is present and purgation is applied too early, pathogens enter due to deficiency without forming Jie Xiong (Chest Binding), resulting only in unceasing heat diarrhea, epigastric fullness and urgency, or pain, irritability, thirst, dry throat, and a slippery, rapid, and excess pulse. For all cases of abdominal fullness and solid pain, irritability, thirst, delirium, red urine, hard stool, and [pulse]...

Licorice Root (Gan Cao, 2 liang, honey-fried) Rhubarb (Da Huang, 4 liang, washed with clear wine) Coarsely chop. Take 5 qian per dose, add 1.5 zhen of water, decoct to 1 zhen.
Strain.
Add
Tiao Wei Cheng Qi Tang with Tangerine Peel (from *Shengji Zonglu*) treats Shanghan where sweating fails to resolve the condition and there is steaming heat.
Rhubarb (Da Huang, coarsely chopped, vinegar-fried 1 liang) Licorice Root (Gan Cao, fried) Aged Tangerine Peel (Chen Ju Pi, washed in water, white pith removed, dried, half liang each) Finely chop. Take 4 qian per dose.
Water 1
zhen half
Chai Hu Da Huang Tang (Bupleurum and Rhubarb Decoction) (from *Shengji Zonglu*) treats Shanghan lasting too long, with stifling sensation in the heart/mind, or painful attacks, erratic狂言 (wild speech), irritability, and insomnia.
Bupleurum Root (Chai Hu, remove seedlings) Rhubarb (Da Huang, wrapped in wet paper and baked) Mirabilite (Pu Xiao) Aurantium (Zhi Ke, remove pulp, bran-fried, 1 liang each) Licorice Root (Gan Cao, fried and chopped, half liang)
Coarsely crush and sieve.
Sweat naturally
Xuan Du San (Disperse Toxins Powder) (from *Shengji Zonglu*) treats Shanghan with large pulse, tidal dryness, and latent heat.
Rhubarb (Da Huang, chopped and fried) Licorice Root (Gan Cao, fried and chopped, half liang) Mirabilite (Pu Xiao, ground, 1 fen) Morning Glory Seed (Qian Niu Zi, 1.5 liang, half raw, half fried) Make into powder.
Take per dose
Powder Water
Xiao Huang Qin Tang (Minor Scutellaria Decoction) (from *Shengji Zonglu*) treats Shanghan after eight or nine days, with constipation and mental restlessness/confusion.
Scutellaria Root (Huang Qin, remove black heart) Aurantium (Zhi Ke, remove pulp, bran-fried) Areca Nut (Da Fu, chopped, vinegar-fried, 1 liang each) Rhubarb (Da Huang, chopped and fried, 2 liang)
Coarsely crush and sieve.
Take per dose
Degree.
Da Qing San (Major Indigo Powder) (from *Shengji Zonglu*) treats excess Yang causing madness with macules, and obstruction of urination and defecation.
Indigo Naturalis (Da Qing) Anemarrhena Rhizome (Zhi Mu) Scutellaria Root (Huang Qin, remove black heart) Gardenia Fruit (Shan Zhi Zi Ren) Cimicifuga Rhizome (Sheng Ma) Coptis Rhizome (Huang Lian, remove whiskers, 1 liang each) Licorice Root (Gan Cao, fried and chopped, half
liang)
Rhubarb
Cheng Qi Wan (Ordering the Qi Pill) (from *Shengji Zonglu*) treats Shanghan seasonal warmth-heat diseases with constipation.
Rhubarb (Da Huang, chopped and fried, 3 fen) Apricot Kernel (Yu Li Ren, soaked in water, skin removed, ground) Immature Bitter Orange (Zhi Shi, remove pulp, bran-fried) Mirabilite (Pu Xiao, ground, 1 liang each) Make into powder.
Mix evenly
Tao Ren Cheng Qi Tang (Peach Kernel Ordering the Qi Decoction) (from *Ru Men Shi Qin*)
Peach Kernel (Tao Ren, remove skin and tips, 12 pieces) Cinnamon Twig (Guan Gui) Licorice Root (Gan Cao) Mirabilite (Mang Xiao, half liang each above) Chop to the size of hemp seeds. Take 3-5
qian per dose. Water
Wo Xuan Wan (Grasp and Disperse Pill) (from *Ru Men Shi Qin*)
Areca Seed (Bai Bing Lang) Cinnamon Bark (Rou Gui) Dried Ginger (Gan Jiang) Aconite Root (Fu Zi) Kansui Root (Gan Sui) Galangal (Liang Jiang) Leek Seed (Jiu Zi) Croton Seed (Ba Dou, equal parts above) Sulfur (Liu Huang, 1 qian) Make into fine
Let it be hot