伤寒六脉浮紧，呻吟不绝，足指温者，阳也；忌服凉药，恐变为阴，害人性命。至六日发烦躁，乃阴阳
换气，欲作汗也，服当归茯苓散，汗出而愈。
六脉紧大，或弦细，不呻吟，多睡耳聋，足指冷，肢节痛，发黄，身生赤黑靥，时发噫气，皆阴也，灸关
元三百壮，服金液丹、姜附汤，过十日半月，出汗而愈。若不早灸，反与凉药者，死。（辨别阴阳不止于此，
然熟体此二条则治伤寒证误谬亦少。其灸法虽不能遍行，若贫家无力而遇难起之病，不能备参药，勉告以灸能
活命，倘肯根据从，未必非仁术之一端。予每见时疫盛行之际，乡陬死者比户，心切怜之，倘尽心力并合丹药以
济之，不特己身蒙福，子孙亦必昌大。）
若吐逆而心下痞，灸中脘五十壮。若微微发颤者，欲作汗，服姜附汤而愈。若少年壮实之人，伤寒至五六
日，发狂逾垣上屋，胃中有积热也，服大通散，轻者知母散亦愈。
伤寒只有四经，无少阳、厥阴二经。夫寒之中人，如太阳主皮毛，故寒邪先客此经；阳明主胃，凡形寒
饮冷则伤之；太阴主脾，凡饮食失节，过食寒物则伤之；少阴主肾，
寒水喜归本经也。故伤寒止有四经，若少阳、厥阴主肝胆，如忧思喜怒方得伤之，寒病最少。如耳聋囊缩者，
少阴也，寒热口苦，乃阳病也，此四证俱不宜用寒凉药也。（言无少阳厥阴二经，非通论也，时医见寒热口苦，
耳聋胁痛，干呕吐逆，不辨阴阳，不审虚实，动云少阳，首尾小柴胡和解以为稳妥，不知虚阳提越，内阴愈甚，
变为躁扰不安，胸膈痞闷，口渴谵妄，脉体弦急；更云内热已深，轻则泻心、白虎，重则陷胸、承气，不至冰
脱不已。至若厥阴，标阴本风，中见火化，证来错杂，人多不识，误死者多矣。）
伤寒病见六脉浮紧，患者呻吟不止，但足趾温暖，这是阳气尚存的表现；此时忌讳服用寒凉药物，恐怕病情转化为阴证，从而危及生命。到了第六天出现烦躁不安，这是阴阳之气交替转换，即将出汗的征兆，应服用当归茯苓散，待汗出后病症即可痊愈。
若六脉紧大，或呈弦细之象，患者不呻吟，嗜睡且耳聋，足趾发冷，肢体关节疼痛，皮肤发黄，身上生出赤黑色的斑点，时常打嗝，这些都是阴证的特征。此时应灸关元穴三百壮，并服用金液丹、姜附汤，经过十天半个月，待汗出后病症即可痊愈。如果不尽早施灸，反而给予寒凉药物，则会导致死亡。（辨别阴阳的方法不仅仅局限于此，但如果能熟练掌握这两条原则，治疗伤寒时的错误就会减少很多。虽然艾灸之法不能在所有情况下普遍施行，但对于贫穷无力购买人参等贵重药材、面临危重疾病的家庭，勉强告知他们艾灸可以救命，如果肯听从建议，未必不是仁术的一种体现。我每次看到时疫盛行期间，乡村中家家户户都有人死亡，心中十分怜悯，如果尽心竭力配合丹药来救助他们，不仅自己会蒙受福报，子孙也必定昌盛。）
如果出现呕吐逆气且心下痞塞的症状，应灸中脘穴五十壮。如果出现微微颤抖的现象，是即将出汗的前兆，服用姜附汤即可痊愈。如果是年轻体壮的人，患伤寒至第五六天，出现发狂、翻墙爬屋的行为，这是因为胃中有积热所致，应服用大通散，症状较轻者服用知母散也可痊愈。
伤寒只有四经，没有少阳和厥阴两经。寒气侵袭人体，太阳经主管皮毛，所以寒邪首先客居在此经；阳明经主管胃，凡是形体受寒或饮用冷饮都会损伤它；太阴经主管脾，凡是饮食不节制、过食寒凉食物都会损伤它；少阴经主管肾，因为寒水之气喜欢回归本经。所以伤寒只涉及四经，而少阳和厥阴经主管肝胆，只有在忧愁、思虑、愤怒等情绪波动时才会受伤，由寒邪引起的病变最少。如出现耳聋、睾丸收缩的症状，属于少阴经病变；出现寒热往来、口苦的症状，属于阳证病变，这四个证候都不宜使用寒凉药物。（说没有少阳和厥阴两经，并非通达全面的理论。当时的医生见到寒热口苦、耳聋胁痛、干呕逆气等症状，不辨别阴阳，不审察虚实，动不动就说是少阳病，从头到尾都用小柴胡汤和解，认为这样稳妥，却不知道这是虚阳外越，内里阴寒更甚，进而变为躁动不安、胸膈痞闷、口渴谵语、脉象弦急；又声称内热已深，轻症用泻心汤、白虎汤，重症用陷胸汤、承气汤，不到导致阳气冰伏脱绝的地步不肯罢休。至于厥阴经，标为阴，本为风，中间见火化，证候错综复杂，人们大多不认识，误治致死的很多。）
In cold damage (Shanghan) disease, if the six pulses are floating and tight, the patient groans incessantly, but the toes are warm, this indicates that Yang Qi is still present; at this time, it is contraindicated to take cooling medicines, lest the condition transform into a Yin syndrome, endangering life. By the sixth day, if irritability arises, this is the exchange of Yin and Yang Qi, indicating that sweating is about to occur; administer Danggui Fuling San (Angelica and Poria Powder), and upon sweating, the illness will resolve.
If the six pulses are tight and large, or wiry and fine, without groaning, accompanied by excessive sleepiness, deafness, cold toes, pain in the limbs and joints, yellowing of the skin, emergence of dark red-black spots on the body, and frequent belching, these are all signs of Yin syndrome. In such cases, moxibustion should be applied to Guanyuan (CV-4) for three hundred moxa cones, and Jin Ye Dan (Golden Elixir Pill) and Jiang Fu Tang (Ginger and Aconite Decoction) should be taken. After ten days or half a month, upon sweating, the illness will resolve. If moxibustion is not performed early, and cooling medicines are given instead, death will result. (Distinguishing between Yin and Yang is not limited to this; however, mastering these two principles will reduce errors in treating cold damage syndromes. Although moxibustion cannot be universally applied, for poor families unable to afford expensive herbs like Ren Shen (Ginseng) when facing critical illnesses, advising them that moxibustion can save lives, if they comply, may well be an aspect of benevolent medicine. I often see, during epidemics, households in rural areas where everyone dies, feeling deep pity; if one exerts utmost effort combining pills and drugs to aid them, not only will oneself receive blessings, but descendants will surely prosper.)
If there is vomiting and epigastric fullness, apply moxibustion to Zhongwan (CV-12) for fifty cones. If there is slight trembling, this indicates impending sweating; administer Jiang Fu Tang (Ginger and Aconite Decoction) to resolve the condition. If a young and robust person suffers from cold damage, and by the fifth or sixth day exhibits mania, climbing walls and roofs, this is due to accumulated heat in the Stomach; administer Datong San (Great Unblocking Powder). For milder cases, Zhimu San (Anemarrhena Powder) will also suffice.
Cold damage involves only four meridians, excluding Shaoyang (Lesser Yang) and Jueyin (Terminal Yin). When cold invades the human body, Taiyang (Greater Yang) governs the skin and hair, so cold pathogens first lodge in this meridian; Yangming (Bright Yang) governs the Stomach, so physical exposure to cold or drinking cold beverages injures it; Taiyin (Greater Yin) governs the Spleen, so irregular diet or excessive consumption of cold foods injures it; Shaoyin (Lesser Yin) governs the Kidney, as cold water qi tends to return to its home meridian. Thus, cold damage involves only four meridians. Shaoyang and Jueyin govern the Liver and Gallbladder; they are injured only by emotions such as worry, thought, anger, etc., so cold-induced diseases are rare. Symptoms such as deafness and retraction of the testicles belong to Shaoyin; alternating chills and fever with bitter taste in the mouth belong to Yang syndromes. None of these four conditions should be treated with cooling medicines. (The statement that there are no Shaoyang and Jueyin meridians is not a comprehensive theory. Contemporary physicians, seeing symptoms like alternating chills and fever, bitter taste, deafness, hypochondriac pain, dry heaving, and vomiting, fail to distinguish Yin from Yang or assess deficiency and excess, immediately diagnosing Shaoyang disease and using Xiaochaihu Tang (Minor Bupleurum Decoction) throughout for reconciliation, believing it safe. They do not realize that this represents floating deficient Yang with worsening internal Yin, leading to restlessness, chest and diaphragm fullness, thirst, delirium, and wiry-tight pulses. They then claim deep internal heat, prescribing Xiexin Tang (Drain the Epigastrium Decoction) or Baihu Tang (White Tiger Decoction) for mild cases, and Xianxiong Tang (Pierce the Chest Decoction) or Chengqi Tang (Assist the Qi Decoctions) for severe cases, until ice-cold depletion occurs. As for Jueyin, its exterior marker is Yin, its root is Wind, and it transforms via Fire; its manifestations are complex and confusing, leading to many misdiagnoses and deaths.)