暑气相感，乃奔腾而上。世医不知治法，徒泻其暑热之气，不知引火归源，于是暑
热已散，龙雷之火下不可归，乃留于上焦而作热矣。火既尽升于上焦，则下焦无火，
安得不两足如冰耶。火在上而寒在下，两相攻击，中焦之地排难解纷，两不相合，
烦躁不安，有自来也。上热熏肺，口必渴也。饮水止可救上焦之热，及至中焦已非
所宜。况下焦纯寒，冷水正其所恶，欲不吐得乎。治法不可治暑，而并不可泻火，
不特不可泻火，必须补火。盖龙雷之火，虚火也。实火可泻，虚火宜补。然而补火
之中，仍须补水以济之，补水者，补肾中之真水也。真火非真水不归，真火得真水
以相合，则下藏肾中，不至有再升之患也。方用八味地黄汤∶
熟地（一两） 山茱萸（五钱） 山药（五钱） 丹皮 茯苓 泽泻（各三钱） 肉桂（一钱）
附子（一分） 水煎，探冷冻饮料之。一剂两足温矣，再剂上身之火热尽散，中焦之烦躁亦安，且
不思饮水矣。
六味地黄汤补水之神药，桂、附引火之神丹，水火既济，何至阴阳之反背乎。
此症用还肾汤亦效。
熟地（三两） 甘草（一钱） 肉桂（五分） 牛膝（五钱） 水煎服。
人有夏日自汗，两足逆冷至膝下，腹胀满，不省人事，人以为阳微之厥也。谁
知是伤暑而湿气不解乎。夫湿从下受，湿感于人身，未有不先从下而上，故所发之
病，亦必先见于下。湿病得汗，则湿邪可从汗而解矣。何自汗而湿仍不解耶？盖湿
病而又感暑气，自汗止可解暑，而不能解湿，以暑热浮于上身，而湿邪中于下体，汗
解于阳分，而不解于阴分耳。治法利小便以解湿，逐热邪以解暑，则上下之气通，
而湿与暑尽散矣。方用解利汤∶
石膏（二钱） 知母（一钱） 甘草（五分） 半夏（一钱） 白术（三钱） 猪苓（一钱） 茯苓（三钱）
泽泻（一钱） 肉桂（一分） 水煎服。连服十剂全愈。
此方乃五苓散、白虎汤之合方也。湿因暑病不祛暑，则湿不易消，故用白虎汤
于五苓散中，解暑利湿而兼用之也。
此症用清暑定逆汤亦佳。
白术 山药 薏仁（各五钱） 肉桂（三分） 香薷（一钱） 陈皮（三分） 人参（二钱） 茯苓
（三钱） 水煎服。
人有冬时寒令，偶开笥箱以取绵衣，觉有一裹热气冲鼻，须臾烦渴呕吐，洒洒
恶寒，翕翕发热，恶食喜水，大便欲去不去，人皆以为中恶也，谁知是伤暑之病乎。
夫冬月有何暑气之侵人，谓之伤暑？不知气虚之人，遇邪即感，不必值酷热炎氛，
奔走烈日之中，而始能伤暑也。或坐于高堂，或眠于静室，避暑而反得暑者正比比
也。是暑气之侵人每不在热，而在寒，衣裳被褥晒之，盛暑夹热收藏于笥箱之内，
其暑气未发，一旦开泄，气盛之人自不能干，倘体虚气弱，偶尔感触，正易中伤，
及至中伤而暑气必发矣。况冬时人身外寒内热，以热投热，病发必速，故闻其气而
即病也。治法不可以伤寒法治之，当舍时从症，仍治其暑气而各症自消。方用香薷
饮加减治之。
人参（三钱） 白术（三钱） 茯苓（二钱） 香薷（二钱） 黄连（五分） 甘草（三分） 陈皮（五分）
扁豆（二钱） 浓朴（五分） 水煎服。一剂而愈，不必再剂。
若执冬令无伤暑之症，拘香薷非治寒之方，不固泥乎甚矣。医道之宜通变，而
治病之贵审问也。
此症用补气化暑丹亦效。
人参（二钱） 茯苓 白术 麦冬（各三钱） 香薷（一钱） 砂仁（一粒） 陈皮 炮姜 神曲（各三分）
水煎服。一剂即愈。
The influence of summer-heat qi moves upward in a surging manner. Physicians of the world, unaware of the correct treatment method, merely purge the summer-heat and fire qi, failing to guide the fire back to its source (Yin Huo Gui Yuan). Consequently, although the summer-heat dissipates, the Dragon-Lei Fire (Xu Huo, deficient fire originating from the Kidney) cannot descend and return to its origin, remaining instead in the Upper Jiao (Upper Burner) to generate heat. Since the fire has entirely ascended to the Upper Jiao, there is no fire in the Lower Jiao (Lower Burner); how can the two feet not be cold as ice? With fire above and cold below, they attack each other. The Middle Jiao (Middle Burner) attempts to resolve this conflict, resulting in a failure of harmony between the upper and lower, leading to restlessness and irritability, which is inevitable. The heat steaming upwards affects the Lung (Fei), causing thirst. Drinking water can only relieve the heat in the Upper Jiao; by the time it reaches the Middle Jiao, it is no longer suitable. Moreover, since the Lower Jiao is purely cold, cold water is exactly what it abhors; how could vomiting not occur? The treatment should not focus solely on summer-heat, nor should it involve purging fire. Not only must one avoid purging fire, but one must also tonify fire. This is because Dragon-Lei Fire is a deficient fire. Excess fire can be purged, but deficient fire requires tonification. However, while tonifying fire, one must still supplement water to assist it. Supplementing water means replenishing the True Water (Zhen Shui, true Yin fluid) within the Kidney (Shen). True Fire cannot return without True Water; when True Fire combines with True Water, it resides securely in the Kidney, preventing recurrence of ascending. Use Ba Wei Di Huang Tang (Eight-Ingredient Rehmannia Root Decoction): Prepared Rehmanniae Radix (Shu Di Huang, 1 liang), Cornus Officinalis Fruit (Shan Zhu Yu, 5 qian), Dioscoreae Rhizoma (Shan Yao), Moutan Cortex (Dan Pi), Poria (Fu Ling), Alisma Rhizoma (Ze Xie) (each 3 qian), Cinnamomi Ramulus (Rou Gui, 1 qian), Aconiti Lateralis Radix Praeparata (Fu Zi, 1 fen). Decoct in water and drink cool, as if drinking chilled beverages. After one dose, the feet become warm; after two doses, the heat in the upper body completely dissipates, the irritability in the middle body settles, and the desire for water disappears. Liu Wei Di Huang Tang (Six-Ingredient Rehmannia Root Decoction) is a divine medicine for supplementing water; Rou Gui and Fu Zi are divine elixirs for guiding fire back to its source. When Water and Fire interact harmoniously (Shui Huo Ji Ji), why would Yin and Yang turn against each other? This condition can also be treated effectively with Huan Shen Tang (Kidney Restoring Decoction): Prepared Rehmanniae Radix (Shu Di Huang, 3 liang), Glycyrrhizae Radix et Rhizoma (Gan Cao, 1 qian), Cinnamomi Ramulus (Rou Gui, 5 fen), Achyranthis Bidentatae Radix (Niu Xi, 5 qian). Decoct in water and take orally.
Some individuals sweat spontaneously in summer, with their feet becoming cold up to the knees, accompanied by abdominal distension and fullness, and loss of consciousness. People assume this is Jue syndrome (Fainting/Cold Extremities) due to deficient Yang. Little do they know that this is Summer-heat injury (Shang Shu) with unresolved Dampness (Shi). Dampness enters from below; when Dampness invades the human body, it invariably moves upward from the lower part first. Therefore, diseases caused by Dampness manifest first in the lower parts. If a Dampness disease induces sweating, the Dampness pathogen can be resolved through sweat. Why does spontaneous sweating fail to resolve the Dampness? This is likely because the Dampness disease is compounded by Summer-heat invasion. Spontaneous sweating can resolve Summer-heat but cannot resolve Dampness, as Summer-heat floats in the upper body while Dampness lodges in the lower body. Sweating resolves pathogens in the Yang aspects but fails to resolve those in the Yin aspects. The treatment method should promote urination to resolve Dampness and expel heat pathogens to resolve Summer-heat. Thus, the Qi of the upper and lower bodies will circulate freely, and both Dampness and Summer-heat will dissipate. Use Jie Li Tang (Relieving and Benefiting Decoction): Gypsum Fibrosum (Shi Gao, 2 qian), Anemarrhenae Rhizoma (Zhi Mu, 1 qian), Glycyrrhizae Radix et Rhizoma (Gan Cao, 5 fen), Pinelliae Tuber (Ban Xia, 1 qian), Atractylodis Macrocephalae Rhizoma (Bai Zhu, 3 qian), Polyporus (Zhu Ling, 1 qian), Poria (Fu Ling, 3 qian), Alisma Rhizoma (Ze Xie, 1 qian), Cinnamomi Ramulus (Rou Gui, 1 fen). Decoct in water and take orally. Take continuously for ten doses for complete recovery. This formula is a combination of Wu Ling San (Five-Ingredient Powder with Poria) and Bai Hu Tang (White Tiger Decoction). If Dampness arises from Summer-heat disease and Summer-heat is not cleared, Dampness is difficult to eliminate. Therefore, Bai Hu Tang is added to Wu Ling San to simultaneously clear Summer-heat and promote diuresis to resolve Dampness. This condition can also be treated excellently with Qing Shu Ding Ni Tang (Clear Summer-heat and Stabilize Rebellious Qi Decoction): Atractylodis Macrocephalae Rhizoma (Bai Zhu), Dioscoreae Rhizoma (Shan Yao), Coicis Semen (Yi Yi Ren) (each 5 qian), Cinnamomi Ramulus (Rou Gui, 3 fen), Moslae Herba (Xiang Ru, 1 qian), Citri Reticulatae Pericarpium (Chen Pi, 3 fen), Ginseng Radix (Ren Shen, 2 qian), Poria (Fu Ling, 3 qian). Decoct in water and take orally.
In winter, during cold weather, an individual opens a wardrobe to retrieve cotton clothes and feels a rush of hot air striking the nose. Shortly thereafter, they experience irritability, thirst, vomiting, aversion to cold (Sa Sa E Han), fever (Xi Xi Fa Re), aversion to food, preference for water, and difficulty defecating despite the urge. People consider this to be Zhong E (Sudden Evil Attack). Who would guess it is a Summer-heat injury? What Summer-heat exists in winter to invade people? Those unaware realize that individuals with Qi deficiency are susceptible to pathogens upon exposure; one does not need to endure scorching heat or run under the blazing sun to suffer from Summer-heat. One may sit in high halls or sleep in quiet rooms, attempting to avoid heat yet contracting Summer-heat illness, a common occurrence. Summer-heat invading people often occurs not in extreme heat but in cold conditions. Clothes and bedding, having been dried in the sun, store the intense heat of midsummer within the wardrobe. The Summer-heat qi remains latent until the wardrobe is opened, releasing it. Individuals with robust Qi are unaffected, but those with weak constitution and deficient Qi may easily be injured upon slight contact. Once injured, the Summer-heat qi inevitably manifests. Furthermore, in winter, the human body is cold externally and hot internally; introducing heat into heat causes rapid disease onset, hence falling ill immediately upon smelling the odor. The treatment should not follow the methods for Cold Damage (Shang Han). Instead, one should disregard the season and treat based on symptoms, addressing the Summer-heat directly so that all symptoms subside. Use Xiang Ru Yin (Mosla Decoction) with modifications: Ginseng Radix (Ren Shen, 3 qian), Atractylodis Macrocephalae Rhizoma (Bai Zhu, 3 qian), Poria (Fu Ling, 2 qian), Moslae Herba (Xiang Ru, 2 qian), Coptidis Rhizoma (Huang Lian, 5 fen), Glycyrrhizae Radix et Rhizoma (Gan Cao, 3 fen), Citri Reticulatae Pericarpium (Chen Pi, 5 fen), Phaseoli Volubilis Seed (Bian Dou, 2 qian), Magnoliae Officinalis Bark (Hou Po, 5 fen). Decoct in water and take orally. Recovery occurs after one dose; a second dose is unnecessary. To insist that Winter has no Summer-heat injuries, or to rigidly adhere to the notion that Xiang Ru is not a formula for treating cold, is extremely inflexible. Medical practice requires adaptability, and treating diseases demands careful inquiry. This condition can also be effectively treated with Bu Qi Hua Shu Dan (Tonify Qi and Transform Summer-heat Elixir): Ginseng Radix (Ren Shen, 2 qian), Poria (Fu Ling), Atractylodis Macrocephalae Rhizoma (Bai Zhu), Ophiopogonis Radix (Mai Dong) (each 3 qian), Moslae Herba (Xiang Ru, 1 qian), Amomi Fructus (Sha Ren, 1 grain), Citri Reticulatae Pericarpium (Chen Pi), Zingiberis Rhizoma Preparatum (Pao Jiang), Massae Medicatae Fermentatae (Shen Qu) (each 3 fen). Decoct in water and take orally. Recovery occurs after one dose.