杂症有精液枯涸，水不上升，咽干思饮，不及半杯，而此则思冰饮水，百杯不足，缘毒火熬煎于内，
非冰水不足以救其燥，非石膏不足以制其焰。庸工忌戒生冷，病家奉为神术，即温水亦不敢与，以致唇焦
而舌黑矣。
四时百病，胃气为本，至于不食，似难为也。而非所论于胃热者，乃邪火犯胃，热毒上冲，频频干
呕者有之，旋食旋吐者有之。胃气一清，不必强之食，自无不食矣。
胸乃上焦心肺之地，而邪不易犯。惟火上炎，易及于心，以火济火；移热于肺，金被火灼，其躁愈
盛，气必长吁，胸必填满而郁遏矣。
心之气出于肺而为声。窍因气闭，气因毒滞，心迷而神自不清，窍闭而声不出矣。
胃属湿土，列处中焦，为水谷之海，五脏六腑十二经脉，皆受气于此。邪不能干，弱者着而为病，偏
寒偏热，水停食积，皆与真气相搏而痛，此言寻常受病之源也。至于疫疹腹痛，或左或右，或痛引小肠，
乃毒火冲突，发泄无门，若按寻常腹痛分经络而治之必死。如初起，只用败毒散或凉膈散加黄连，其痛立
止。
在伤寒过汗，则为亡阳，而此则不然。盖汗者心之液，血之所化也。血生于心，藏于肝，统于脾。
血被煎熬，筋失其养，故筋肉为之 动。
病患自言胃出冷气，非真冷气也，乃上升之气，自肝而出，中挟相火，自下而上，其热尤盛。此火极
水化，热极之征，阳亢阴微，故有冷气。
In miscellaneous diseases, there are cases of essence and fluid depletion where fluids fail to ascend, causing dryness in the throat and a desire to drink, yet the patient cannot consume more than half a cup. In contrast, patients with epidemic macules (Yizhen) crave ice water, finding even a hundred cups insufficient. This is because toxic fire roasts within; only ice water can rescue the dryness, and only Shigao (Gypsum Fibrosum) can suppress the flame. Quack doctors forbid raw and cold foods, and patients' families revere this as a divine method, not even daring to offer warm water, resulting in cracked lips and a black tongue.
The stomach qi is the root of all diseases across the four seasons. While inability to eat seems difficult to treat, this does not apply to cases of stomach heat. When evil fire invades the stomach and hot toxins rush upward, frequent dry heaving or immediate vomiting after eating may occur. Once the stomach qi is cleared, food will be accepted naturally without force-feeding.
The chest is the region of the upper jiao, housing the heart and lungs, where pathogens rarely invade directly. However, when fire flares upward, it easily affects the heart, creating a situation where fire fuels fire; heat transferred to the lungs scorches the Metal element, intensifying restlessness. The patient must sigh frequently, feeling chest fullness, distension, and Qi stagnation.
The voice originates from the heart but is expressed through the lungs. If orifices are closed due to Qi blockage, and Qi is stagnant due to toxicity, the heart becomes confused and spirit unclear, leading to closed orifices and an inability to produce sound.
The Stomach belongs to damp Earth, located in the middle jiao, serving as the sea of water and grain; the Qi of the five zang organs, six fu organs, and twelve meridians all derive from here. Pathogens generally do not interfere unless the body is weak, allowing pathogens to settle and cause disease. Whether biased towards cold or heat, or involving water retention and food accumulation, these factors struggle with true Qi causing pain; this describes the source of ordinary illnesses. However, abdominal pain caused by epidemic macules, occurring on either side or radiating to the small intestine, results from conflicting toxic fire with no outlet for release. Treating this according to meridians for ordinary abdominal pain will lead to death. In the initial stage, using Baidu San (Poison-Resolving Powder) or Liangge San (Cooling the Diaphragm Powder) added with Huanglian (Coptidis Rhizoma) will stop the pain immediately.
In Shanghan (Cold Damage), excessive sweating leads to Yang collapse, but this is not the case here. Sweat is the fluid of the Heart, transformed from blood. Blood is generated by the Heart, stored in the Liver, and controlled by the Spleen. When blood is roasted by toxicity, tendons lose nourishment, causing muscle twitching.
Patients claim cold air emanates from the stomach, but this is not true cold. It is ascending Qi originating from the Liver, carrying Ministerial Fire, rising from below upwards, generating intense heat. This phenomenon represents "fire transforming into water" at its extreme, a sign of extreme heat with hyperactive Yang and deficient Yin, thus creating the sensation of cold air.