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Xin San Taiyang Method: (See previous text)
Wan Zheng Hui Yang Method: (See previous text)
Gan Re Qu Han Method: Treats syndromes where cold pathogen directly invades the Three Yin meridians.
Gancao (2 qian, honey-fried), Dan Ganjiang (1 qian), Dan Fupian (1 qian), Dan Wuzhu Yu (1 qian).
Briefly decoct in boiling water and take when cool.
This is Zhang Zhongjing's Sini Decoction (Sini Tang). It is proposed to add Wu Zhu Yu, which is extremely hot, to dispel cold pathogen from the Jueyin meridian; using it to treat cold invading the Three Yin meridians is most accurate. An Yuan’s commentary states: When cold overflows internally, treat with sweet and hot substances; therefore, use Gan Jiang and Fu Zi, agents of great heat, to stimulate yang qi and disperse cold pathogen externally; Gan Cao is also an agent that disperses cold and tonifies the middle, while simultaneously moderating the upward rebellion of Gan Jiang and Fu Zi. The reason for taking it cool is that cold is abundant in the interior; if taken hot, it will be rejected and not accepted. This corresponds to the Classic saying "use heat due to cold" (Re Yin Han Yong), and also "treat cold with heat, but administer it cool" (Zhi Han Yi Re, Liang Er Xing Zhi).
Xin Liang Jie Biao Method: (See previous text)
Qing Liang Tou Xie Method: (See previous text)
Qu Re Xuan Qiao Method: (See previous text)
Xin Wen Jie Biao Method: (See previous text)
Liang Jie Li Re Method: (See previous text)

Mahuang Tang (Ephedra Decoction): Treats Taiyang Disease caused by Cold Damage, characterized by aversion to cold and fever, headache and stiffness of the neck, absence of sweating and wheezing, and a floating and tight pulse.
Mahuang, Guizhi, Xingren, Gancao.
Decoct in water, take warm, cover with blankets to induce slight sweating.
Gegen Tang (Pueraria Decoction): Treats Cold Damage where the Taiyang stage has not resolved and has transmitted to the Yangming stage, with a floating and long pulse, continuous redness of the face, headache extending to the forehead, fever and aversion to cold without sweating, eye pain, dry nose, and inability to sleep.
Gegen, Mahuang, Guizhi, Baishao, Gancao, Shengjiang, Dazao.
Decoct in water, take warm, aim for slight sweating.
Xiaochaihu Tang (Minor Bupleurum Decoction): Treats Shaoyang Disease caused by Cold Damage, characterized by alternating chills and fever, bitter taste in the mouth and deafness, fullness and distension in the hypochondrium with a wiry pulse, dizziness, lack of appetite, irritability and frequent vomiting, as well as in women with Cold Damage where heat enters the Blood Chamber.
Chaihu, Renshen, Zhi Banxia, Huangqin, Gancao, Shengjiang, Dazao.
Decoct in water, take warm.
Lizhong Tang (Regulate the Middle Decoction): Treats Taiyin Disease caused by Cold Damage, characterized by spontaneous diarrhea without thirst, excessive cold and vomiting, abdominal pain and loose stools, sinking and powerless pulse, or cold limbs with cramping, chest knotting with expulsion of roundworms, and Cold-induced Huoluan (cholera-like disease).
Renshen, Baizhu, Pao Jiang, Zhigancao.
Adding Fuzi to this formula creates Fuzi Lizhong Tang (Aconite Regulate the Middle Decoction).
Zhenwu Tang (True Warrior Decoction): Treats Shao Yin Cold Damage with abdominal pain, difficulty in urination, heaviness and pain in the four limbs, and spontaneous diarrhea, indicating the presence of fluid retention. It may also present with cough or vomiting, or clear urination. Additionally, it treats cases where after inducing sweating for Taiyang Disease, the condition does not resolve, fever persists, palpitations and dizziness occur, muscle twitching happens, the body trembles as if wanting to fall to the ground, and there is Qi deficiency with aversion to cold.
Fuzi, Baishao, Baizhu, Fuling.
Add Shengjiang and decoct.
Sini Tang (Sini Decoction): Treats Three Yin Cold Damage, characterized by body and abdominal pain, diarrhea with undigested food, aversion to cold without thirst, cold limbs, or conversely no aversion to cold with red face and irritability, internal cold with external heat, dry heaving, sore throat, and a sinking, minute, thin pulse nearly imperceptible.
Fuzi, Ganjiang, Zhigancao.
Decoct in water and take cool.
Lei Feng’s Note: There are one hundred and thirteen formulas for Cold Damage in total, all fully prepared in Changsha’s [Zhang Zhongjing’s] book. Any medical student must study them thoroughly. I record only these six formulas here merely to clarify their application in the Six Meridians Cold Damage. Formulas for when cold pathogen transforms into heat and various transmission patterns cannot be fully recorded; one should consult the Shanghan Lun (Treatise on Cold Damage) to understand them clearly.
Qianjin Yangdan Tang (Qianjin Yangdan Decoction): Treats Winter Warmth disease with floating pulse, fever, stiffness of the neck, and headache.
Guizhi, Baishao, Huangqin, Gancao.
Add Jiang and Zao, decoct and take.
Qianjin Yindan Tang (Qianjin Yindan Decoction): Treats Winter Warmth disease with internal cold and external heat, pain in joints and extremities, complicated by cold-food stagnation.
It is Yangdan Tang plus Ganjiang.
Lei Feng’s Note: Yangdan Tang primarily treats diseases where Winter Warmth was initially contracted and then suppressed by Wind-Cold. Yindan Tang primarily treats diseases where the constitution is inherently cold but suddenly contracts Winter Warmth. In cases of severe cough and thirst, Jiang and Gui are ultimately difficult to use indiscriminately. All warm-heat diseases strictly forbid acrid-warm herbs; occasional use is only justified if the underlying nature is cold or external cold is added. If one rigidly adheres to Yangdan Tang and Yindan Tang as fixed formulas for Winter Warmth, would this not be confused?