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One prescription: Use two *tai* (a traditional unit of weight) of black soybeans (*Soybeanis Semen Nigrum*), stir-fry until cooked, cook with wine, boil for a few moments, remove the beans and retain the wine, drink two bowls to be cured.

Another prescription: Grind peppercorns (*Zanthoxyli Pericarpium*) into a paste, soak in boiling wine and drink; externally apply the method of ironing with scallions and salt.

Yet another prescription: Take one live rooster, cut open its abdomen with a knife, and apply it hot to the navel for efficacy.

Stir-fry one *jin* of edible salt until dry. When very hot, wrap it in two layers of cloth and iron the navel; replace with hot ones when cold, until Yang Qi recovers. Another method uses one *sheng* of Evodia Fruit (*Evodiae Fructus*), lightly stir-fried with wine, boiled until damp, placed in a silk bag, steamed until extremely hot, and used to iron the chest, abdomen, and palms/soles of feet. Stop when Qi flow becomes smooth; this has proven effective repeatedly. Another method treats severe cold invasion causing unconsciousness, Qi deficiency with Yang collapse, abdominal pain, and blueish lips. Take a handful of scallions (*Allii Fistulosi Bulbus*), bind them into a cake shape, cut off roots and leaves, retaining only about two cun of the white part. First, pass over fire once to make it thoroughly hot but not burning, place it above and below the patient's navel, and iron it with an ironing tool to let the scallion's heat penetrate into the abdomen. Make three or four such cakes; replace each one when it cools or loses effectiveness. Stop when the patient's hands and feet become warm and sweating occurs. Additionally, brew a bowl of scallion soup for the patient to drink, which is beneficial.

Qihai (CV6, one acupoint, located 1.5 cun below the umbilicus; moxibustion of twenty cones is indicated when the Jueyin pulse is faint.) Shimen (CV5, one acupoint, located 2 cun below the umbilicus.) Guanyuan (CV4, one acupoint, located 3 cun below the umbilicus; indicated for treating Zang-Jie [organ knotting] that cannot be purged, as well as continuous sweating from the genital area, abdominal distension, borborygmus, dark complexion, and bluish fingers; moxibustion of over one hundred cones is appropriate.)

The Classics state: Yang deficiency generates external cold. Because Yang Qi cannot defend the exterior, aversion to cold occurs. It is suitable to use herbs like Ginseng Radix et Rhizoma (*Ginseng Radix*), and add Aconite Lateral Root Preparata (*Aconiti Lateralis Radix Praeparata*) for severe cases. For those suffering from long-term illness with aversion to cold, resolving stagnation is also appropriate. Danxi said: Aversion to cold is not true cold; it is clearly a heat syndrome. There are also cases caused by prolonged consumption of hot-natured medicines. Hejian stated that extreme fire resembles water; when heat is excessive, one may feel cold internally, but it is actually not cold. Some cases improved slightly after using heat-clearing formulas, because pungent flavors can disperse, temporarily opening up stagnant fire.

Danxi's medical case record: Treated a young man with aversion to cold who had self-administered too many Aconite preparations. He was cured using phlegm-expelling methods and blood-nourishing with heat-clearing techniques.

He also treated a person who drank alcohol and suffered from aversion to cold and shivering due to internal stagnation of damp-heat. He prescribed Scutellaria Root (*Scutellariae Radix*) two liang and Kudzu Root (*Puerariae Lobatae Radix*) one liang, decocted and drunk, resulting in profuse sweating and cure.