五十年前，吐血者绝少，今则年多一年。其症本皆可愈，而多不治者，药误之也。盖血症因伤风咳嗽
而起者，十之七八，因虚劳伤损而起者，十之一二。乃医者概以熟地、人参、麦冬、五味等滋补酸敛之药，
将风火痰瘀俱收拾肺管，令其咳嗽不止，元气震动，津液化痰，不死何待？凡风寒补住，必成痨病，无人不知，
今竟无一人知之矣。盖吐血而嗽者，当清肺降气，略进补阴之品；其不嗽者，乃喉中之络破，故血从络出，
并不必服药，其甚者，只取补络之药以填损处，自可除根，即不服药，亦能自愈，历试不爽。乃病者进以
不服药之说，则虽或面从，背后必非笑随之，进以熟地、麦冬、人参、五味等药，则甘心就死。前者死矣，
后者复然，岂非命乎！
暑字之名义，与寒字相反，乃天行热毒之病也。其症脉微少气，烦渴燥热，甚则手足反冷。若其人汗
出不止，用人参白虎汤主之，如或身热、腹痛、胀满、呕吐、泻痢、厥冷，则名热霍乱，人参断不可用，当
用香薷饮、藿香正气散主之，皆治暑之正法也。若《伤寒论》中又有寒霍乱一症，此乃寒邪入阴，用理中汤
主之。此治寒霍乱之法也，与暑热之霍乱，绝不相干。乃后之医书，于热霍乱门中附入寒霍乱一方，名大顺
散，用肉桂、干姜，即理中汤之变法。其方下亦注明治夏月伤冷冻饮料之症，其说甚明。乃昏昧之人，耳闻
有此方，竟以之治暑热之霍乱，以示奇异。其死也，宛转呼号，唇焦舌裂，七窍见血；热归于内，则手足
反冷，而脉微欲绝，所谓热深厥亦深也（手足冷谓之厥，厥者逆也）。乃病者、医者不知此理，以为服热
药而更冷，其为阴症无疑。故目睹其惨死而无所悔，以后复治他人，热药更加重矣。与治暑热痢者之用四
逆汤，其害正同。举世尽以为必当如此，虽言不信也。
Fifty years ago, cases of hemoptysis (coughing up blood) were extremely rare, whereas nowadays the incidence increases year by year. These conditions are fundamentally curable, yet most remain untreatable due to medication errors. Approximately seventy to eighty percent of hemoptysis cases originate from wind-pathogen-induced coughs, while ten to twenty percent arise from deficiency consumption and damage. However, physicians indiscriminately employ tonifying and astringent herbs such as Shu Di Huang (Rehmanniae Radix Preparata), Ren Shen (Ginseng Radix et Rhizoma), Mai Dong (Ophiopogonis Tuber), and Wu Wei Zi (Schisandrae Fructus). This approach traps wind, fire, phlegm, and blood stasis within the lung vessels, causing persistent coughing, disturbing the Yuan Qi (Original Qi), transforming body fluids into phlegm, and inevitably leading to death. It is universally known that if wind-cold pathogens are sealed in by tonics, they will inevitably develop into lao bing (consumptive disease), yet today no one seems to understand this. For hemoptysis accompanied by cough, one should clear the lungs and descend qi, administering only slight amounts of yin-nourishing substances; for those without cough, the bleeding results from ruptured collateral vessels in the throat, so blood flows from these collaterals. Medication is not necessarily required. In severe cases, only drugs that repair collaterals are needed to fill the damaged areas, which can eradicate the root cause. Even without medication, spontaneous recovery is possible, as verified repeatedly without failure. Yet when physicians suggest abstaining from medication, patients may superficially agree but secretly ridicule them behind their backs; conversely, when offered tonics like Shu Di Huang, Mai Dong, Ren Shen, and Wu Wei Zi, they willingly accept them until death. The former die, and the latter repeat the mistake—is this not fate?
The character "Shu" (Summerheat) is opposite in meaning to "Han" (Cold); it refers to epidemic heat-toxin diseases. Symptoms include a faint pulse, shortness of breath, irritability, thirst, dryness, and heat, with cold extremities in severe cases. If the patient suffers from profuse sweating, Renshen Baihu Tang (Ginseng White Tiger Decoction) is indicated. If symptoms include fever, abdominal pain, distension, vomiting, diarrhea, dysentery, and cold limbs, it is termed Re Huoluan (Hot Cholera), and Ren Shen must absolutely not be used. Instead, Xiangru Yin (Elsholtzia Decoction) or Huoxiang Zhengqi San (Agastache Powder to Rectify the Qi) should be administered; these are the correct methods for treating summerheat. In contrast, Han Huoluan (Cold Cholera) mentioned in Shanghan Lun (Treatise on Cold Damage Disorders) arises from cold pathogens entering the yin meridians and is treated with Lizhong Tang (Regulate the Middle Decoction). This method for cold cholera is entirely unrelated to summerheat-heat cholera. However, later medical texts appended a formula for cold cholera, named Dashun San (Great Smooth Powder), using Rou Gui (Cinnamon Bark) and Gan Jiang (Dried Ginger), which is a variation of Lizhong Tang. The formula description explicitly notes its use for injuries caused by consuming frozen drinks in summer, making the indication clear. Yet ignorant individuals, having heard of this formula, mistakenly use it to treat summerheat-heat cholera to display their novelty. Patients die writhing and wailing, with cracked lips, split tongues, and bleeding from the seven orifices; heat trapped internally causes cold extremities and a faint, nearly imperceptible pulse, known as "re shen jue yi shen" (the deeper the heat, the deeper the cold reversal; cold extremities are termed jue, meaning reversal). Neither patients nor physicians understand this principle, assuming that since coldness worsens after taking hot medicines, it must be a yin syndrome. Consequently, they witness tragic deaths without remorse and subsequently treat others with even more potent hot medicines. This harm is identical to using Sini Tang (Frigid Extremities Decoction) for treating summerheat-dysentery. The world assumes this is mandatory, disregarding any contrary explanations.