春秋时月，人感山岚瘴雾毒瓦斯，乃发寒热，胁膈饱闷，不思饮食，此毒瓦斯从鼻口而
入也。治当清上焦，解内毒，行气降痰，不可发汗，盖岭南气温，易出汗耳。重则寒热
不退，轻则为疟，南方气升，故岭南人得此病者，卒皆胸膈痰涎壅塞，饮食不进，与北
方伤寒，只伤表而里自和者不同也。
瘟疫，众人一般病者，是谓之天行时疫。治有三法，宜补，宜散、宜降热，甚者
加童便，或人中黄于三法中，凡入病家、须避其邪气，不使染着，以雄黄末涂鼻孔，其
行动从客位而入。凡男子病秽气出于口，女子病秽气出于阴门，其相对坐立之间，必须识其向背。
凡有表症宜汗者，用羌活冲和汤，加柴胡、当归、芍药、苏叶、葱白之类，速散表
邪，毋使入内，是即安胎之第一意也。若里实热症，大便不通燥渴者，则亦当用大黄转
药，须酒制用，更兼四物以护之，则无损于胎矣。设患真寒脉伏厥冷者，则用姜桂附
子，盖附桂虽热，然用黄连、甘草制之，则无害矣，况有大寒大热之病，不急为除去，
反足以损胎，有病则病当之，但中病即已，毋过其制，外用井底泥、青黛、伏龙肝末调
匀，涂于孕妇脐中二寸许，如干再涂，以保胎孕也。倘肠胃虚寒，而畏寒泄泻者忌之。
产后伤寒，不可轻易汗下，恐产时伤力，其发热者，有因去血过多，有恶露不
尽，有三日蒸乳，或早起劳动，或饮食停滞，俱有发热恶寒，状类伤寒，不可便用发
表攻里之剂，但产后恶露不尽，发热恶寒者，必胁肋胀满，连大小腹，有块作痛。产
后饮食停滞，发热头痛者，必有噫气作酸，恶闻食臭，胸膈饱闷，右关脉紧。若产后蒸
乳发热恶寒者，必乳间胀硬疼痛，令产妇揉乳汁通其热自除，不药而愈矣。若果产后不
谨，虚中感冒者，当以四物汤加入风药，尤宜甲其，正气之虚实而邪感之重轻以汗之，
至于热邪传里，燥渴便秘，而脉沉实，热甚谵语者，重则下之，用四物加柴胡、黄芩、
枳壳、熟大黄，轻则蜜导，下后用四物汤加干姜少许，参术大用，以温补其血气。若热
邪传至半表半里，用四物汤合小柴胡汤主之。然当产后气血大虚，诸病以大补气血为
主，虽有杂症，以末治之，况汗下乎？
在春秋季节，人们感染了山间的岚气、瘴雾和毒瓦斯，从而引发寒热交替的症状，胁肋及膈部胀满闷痛，不思饮食，这是因为毒瓦斯从口鼻侵入人体所致。治疗应当清解上焦的热邪，解除体内的毒素，行气化湿并降化痰浊，不可使用发汗法，因为岭南地区气温较高，人体容易出汗。病情重的则寒热不退，轻的则表现为疟疾。由于南方气候之气上升，所以岭南人患此病者，往往突然发生胸膈间痰涎壅塞，饮食无法进下，这与北方伤寒病仅损伤体表而内部脏腑功能依然调和的情况是不同的。
瘟疫是指众人同时患上相同疾病的情况，这被称为“天行时疫”。治疗瘟疫有三种方法：适宜补益、适宜发散、适宜清热降火。病情严重的可在上述三法中加入童便（儿童尿液）或人中黄（甘草粉经特殊工艺制成的中药）。凡是进入病人家中，必须避开其邪气，防止被感染，可以用雄黄粉末涂抹鼻孔，行动时要从客人的位置进入。一般来说，男子患病时秽气从口出，女子患病时秽气从阴门出，在相对而坐或站立时，必须注意辨别朝向和背向。
凡是有表证需要发汗的，使用羌活冲和汤，加入柴胡、当归、芍药、紫苏叶、葱白等药物，迅速疏散表邪，防止病邪内传，这就是安胎的首要原则。如果是里实热证，大便不通、干燥且口渴的，也应当使用大黄进行通便泻下，但必须经过酒制使用，并配合四物汤来保护正气，这样就不会损伤胎儿了。如果患有真寒证，脉象伏匿、四肢厥冷的，则使用干姜、肉桂、附子。虽然附子和肉桂性热，但如果用黄连、甘草来制约它们，就没有危害了。况且有大寒大热的疾病，如果不及时去除，反而足以损伤胎儿，所谓“有病则病当之”，只要中病即止，不要超过剂量限制。此外，外用井底泥、青黛、伏龙肝末调匀，涂抹在孕妇脐中约二寸处，如果干了再涂，以保全胎孕。但是如果肠胃虚寒，畏寒泄泻的则忌用此法。
产后伤寒，不可以轻易使用发汗或攻下的方法，恐怕产妇在分娩时已经耗伤体力。产后发热的原因，有的是因为失血过多，有的是因为恶露不尽，有的是因为第三天开始泌乳（蒸乳），或者是早起劳动，或者是饮食停滞，这些情况都会出现发热恶寒，症状类似伤寒，不能立即使用发表攻里的药剂。但是，如果产后恶露不尽，出现发热恶寒，必然伴有胁肋胀满，牵连小腹部，有肿块且疼痛。如果是产后饮食停滞，出现发热头痛，必然伴有嗳气泛酸，厌恶食物气味，胸膈胀满闷痛，右关脉紧。如果是产后泌乳引起的发热恶寒，必然伴有乳房胀硬疼痛，让产妇揉搓使乳汁通畅，热邪自然消除，不用吃药也能痊愈。如果确实是产后不慎，正气虚弱而感冒外邪的，应当以四物汤为基础加入祛风药物，尤其应该根据正气的虚实和感受邪气的轻重来决定发汗的程度。至于热邪传入体内，导致燥渴便秘，脉象沉实，热盛出现胡言乱语的情况，病情重的用攻下法，使用四物汤加入柴胡、黄芩、枳壳、熟大黄；病情轻的用蜜导法（蜂蜜栓剂通便）。攻下之后，使用四物汤加入少许干姜，大量使用人参、白术，以温补气血。如果热邪传入半表半里，使用四物汤合小柴胡汤为主进行治疗。然而，考虑到产后气血大虚，各种疾病都以大补气血为主，即使有其他杂症，也应将其放在次要地位处理，更何况是发汗和攻下呢？
During the spring and autumn seasons, people may contract mountain miasma, pestilential fog, and toxic vapors, leading to alternating chills and fever, fullness and oppression in the hypochondrium and diaphragm, and loss of appetite. This occurs because the toxic vapors enter through the nose and mouth. Treatment should focus on clearing the Upper Jiao (Upper Burner), resolving internal toxins, moving Qi, and descending phlegm. Sweating methods should be avoided, as the warm climate in Lingnan makes sweating easy. In severe cases, chills and fever persist; in mild cases, it manifests as malaria (Malaria). Due to the ascending nature of Qi in the South, patients in Lingnan often suddenly experience obstruction of phlegm and saliva in the chest and diaphragm, with inability to eat or drink. This differs from Northern Cold Damage (Shanghan) diseases, which only affect the exterior while the interior remains harmonious.
Plague refers to a situation where many people suffer from the same illness simultaneously, known as "Heavenly Traveling Seasonal Epidemic" (Tianxing Shi Yi). There are three treatment principles: tonification, dispersal, and clearing heat. In severe cases, add child's urine (Tongbian) or Renzhonghuang (Processed Licorice Root) to these methods. When entering a patient's home, one must avoid their pathogenic qi to prevent infection. Powdered Realgar (Xionghuang) can be applied to the nostrils, and one should enter from the guest's position. Generally, when men are ill, foul odor emanates from the mouth; when women are ill, it emanates from the vaginal opening. During sitting or standing face-to-face, one must be aware of orientation and back-facing.
For conditions with exterior symptoms requiring sweating, use Qianghuo Chonghe Tang (Qianghuo Harmonizing Decoction) added with Chaihu (Bupleurum Root), Danggui (Angelica Sinensis Root), Shaoyao (Peony Root), Ziye (Perilla Leaf), and Congbai (Scallion White) to rapidly disperse exterior pathogens and prevent them from penetrating inward. This is the primary principle for preserving pregnancy. If there are interior excess-heat symptoms, such as constipation, dryness, and thirst, Dahuang (Rhubarb Root) should be used for purgation, but it must be processed with wine. It should be combined with Siwu Tang (Four Substances Decoction) to protect healthy qi, thereby avoiding harm to the fetus. If true cold syndrome is present, characterized by a hidden pulse and cold extremities, Jiang (Dried Ginger), Rougui (Cinnamon Bark), and Fuzi (Prepared Aconite Root) should be used. Although Fuzi and Rougui are hot, their toxicity is neutralized by Huanglian (Coptis Rhizome) and Gancao (Licorice Root). Moreover, severe cold or heat conditions must be removed promptly to prevent fetal damage. The disease bears the brunt of the medication; stop once the condition improves, without exceeding dosage limits. Externally, mud from the bottom of a well, Qingdai (Indigo Naturalis), and Fulonggan (Vermilion Dragon Liver - calcined hematite) can be mixed and applied around the pregnant woman's umbilicus (approx. 2 cun). Reapply if dry, to protect the pregnancy. However, this is contraindicated for those with deficiency-cold of the intestines and stomach, accompanied by aversion to cold and diarrhea.
Postpartum Cold Damage (Shanghan) should not be treated lightly with sweating or purging methods, fearing further depletion of strength after childbirth. Fever postpartum may result from excessive blood loss, incomplete lochia discharge, lactation onset (steaming milk) on the third day, early physical labor, or food stagnation. All these cause fever and aversion to cold, resembling Cold Damage. One should not immediately use exterior-releasing or interior-purgative formulas. However, if postpartum fever and aversion to cold are due to incomplete lochia, there will necessarily be distension and fullness in the hypochondrium extending to the lower abdomen, with painful masses. If caused by food stagnation, fever and headache will be accompanied by belching with acid reflux, aversion to food odors, chest and diaphragm fullness, and a tight pulse at the right Guan position. If caused by lactation, there will be distension, hardness, and pain in the breasts; massaging the breasts to promote milk flow will resolve the heat spontaneously without medication. If the condition is truly due to negligence postpartum, resulting in deficiency and external contraction, Siwu Tang (Four Substances Decoction) should be used with wind-dispelling herbs. The degree of sweating should be determined by the balance of healthy qi and the severity of the pathogen. If heat pathogens transmit inward, causing dryness, thirst, constipation, deep and solid pulse, and delirium due to severe heat, severe cases require purgation using Siwu Tang plus Chaihu, Huangqin (Scutellaria Root), Zhike (Aurantium Fruit), and Shu Dahuang (Prepared Rhubarb). Mild cases use honey suppositories (Midao). After purgation, use Siwu Tang with a small amount of Ganjiang (Dried Ginger) and large doses of Renshen (Ginseng Root) and Baizhu (Atractylodes Macrocephala Rhizome) to warm and tonify blood and qi. If heat transmits to the half-exterior half-interior level, use Siwu Tang combined with Xiaochaihu Tang (Minor Bupleurum Decoction). However, given the significant deficiency of blood and qi postpartum, the main treatment for all diseases should be major tonification of blood and qi. Even with miscellaneous symptoms, they should be treated secondarily, let alone sweating and purging.