腹中常自觉有一段热如汤火者，此无与气化之事也。非实火内热，亦非阴虚内热，是瘀
血之
所为也。其证口不干，而内渴消水。盖人身最热之体，莫过于血。何则?气之性热，而血者
气之室也。热性之所附丽也。气之热散而不聚，其焰疏发；血之热积而独浓，其体燔灼。
火
犹焰也，血犹炭也，焰热于炭乎?抑炭热于焰也?故病患或常如一阵热汤浇状，是心虚而血下
溜也；又常如火从胸腹上冲于喉，是肝脾郁逆而血上冲也。皆仍在血所当行之道，故不为泛
溢外出之患。又有两肋内或当胸一道如火温温然，有心窝中常如椒桂辛辣状，或如破皮疼胀
状，喉中作血腥气者，是皆瘀血积于其处也。其因或由寒热病后，或由渴极骤饮冷水，或由
大怒，或由用力急遽，或由劳后骤息，或由伤食日久，或由嗜食爆炙太过，在妇人或由经水
不尽。治之必兼行瘀之品，如桃仁、红花之属，或吐紫块，或下黑粪，乃止。若误以为实火
，而用寒清；以为阴虚，而用滋补，则瘀血益固，而将成干血证矣。凡瘀血初起，脉多见弦
，兼洪者易治，渴饮者易治，其中犹有生气也；短涩者难治，不渴者难治，以其中无生气也
。如汤火上冲下溜者，血虽瘀而犹行；如辛辣、如破皮，常在其处者，血已结于膜络，不得
行也。血行者，凉化之，佐以补气；血结者，温化之，佐以行气。本草称三棱能消刀柄，亦
甚言其能化无气之血块也。
腹部常自觉有一处发热，如同汤火灼烧一般，这与气化功能无关。这不是实火内热，也不是阴虚内热，而是由瘀血引起的。其症状表现为口不干，但体内感到口渴并想喝水。大概人身最热的物质，没有比得上血的。为什么呢？气的性质是热的，而血是气的居所，也是热性依附所在。气的热是发散而不聚集的，其火势疏朗散发；血的热是积聚而浓烈的，其体燃烧灼痛。火就像火焰，血就像木炭，是火焰比木炭热呢？还是木炭比火焰热呢？所以病人有时感觉像是一阵热汤浇淋的样子，这是心气虚弱而血液下溜所致；又有时感觉像火从胸腹向上冲到喉咙，这是肝脾郁结逆乱而血液上冲所致。这些情况都仍在血液应当运行的通道中，所以不会发生泛滥外溢的祸患。又有两肋内部或胸口正中一道地方感觉温热如火，有心窝部常如花椒、桂皮辛辣的感觉，或者像皮肤破损疼痛肿胀的感觉，喉中有血腥气的，这些都是瘀血积聚在这些部位造成的。其原因可能来自寒热病之后，或因极度口渴突然饮用冷水，或因大怒，或因用力过猛急促，或因劳累后突然休息，或因饮食积滞日久，或因嗜好食用爆炒炙烤食物太过，在妇女则可能因月经未尽。治疗时必须兼用行瘀的药物，如桃仁、红花之类，直到吐出紫黑色的血块，或排出黑便，才能停止。如果误认为是实火，而使用寒凉清泻之法；误认为是阴虚，而使用滋补之法，那么瘀血会更加坚固，最终将形成干血证了。凡是瘀血初起，脉象多见弦脉，兼见洪脉的容易治疗，口渴饮水的容易治疗，因为其中还有生气；脉象短涩的难治，不口渴的难治，因为其中没有生气。像热汤上冲下溜的情况，血虽然瘀滞但还能运行；像辛辣感、像破皮感，常固定在某处的情况，血已经凝结在膜络之中，不能运行了。对于能运行的血，用凉法化解它，辅以补气药；对于已凝结的血，用温法化解它，辅以行气药。本草书籍称三棱能消除刀柄（比喻坚硬的肿块），这也是极言其能化解没有生气的血块。
There is often a sensation of heat in the abdomen, as if scalded by boiling water or fire; this has nothing to do with Qi transformation. It is neither internal heat due to Excess Fire nor internal heat due to Yin Deficiency, but rather caused by Blood Stasis (Yu Xue). The manifestation includes a dry mouth that does not thirst, yet an internal sensation of thirst leading to excessive water intake. Generally, among all substances in the human body, Blood is the hottest. Why? Because the nature of Qi is hot, and Blood serves as the residence of Qi and the locus where heat attaches. The heat of Qi is dispersed and unaggregated, its flame spreading thinly; whereas the heat of Blood accumulates and becomes concentrated, its body burning intensely. Fire is like a flame, while Blood is like charcoal; is a flame hotter than charcoal, or is charcoal hotter than a flame? Therefore, when patients feel as though a stream of hot soup is pouring over them, it indicates Heart Qi Deficiency causing Blood to flow downward; when they feel as though fire rushes from the chest and abdomen up to the throat, it indicates Liver and Spleen Qi Stagnation and Rebellion causing Blood to rush upward. In both cases, the pathology remains within the pathways where Blood should circulate, thus avoiding the hazard of extravasation. Additionally, there may be a warm, fiery sensation along a path inside the hypochondrium or across the chest; a spicy, pungent sensation in the epigastrium akin to Sichuan pepper and cinnamon; a painful, distending sensation resembling broken skin; or a bloody odor in the throat. All these indicate the accumulation of Blood Stasis at those locations. Etiologies may include sequelae of Cold-Heat diseases, sudden ingestion of cold water after extreme thirst, severe anger, strenuous exertion, abrupt rest after labor, prolonged food stagnation, excessive consumption of fried or roasted foods, or incomplete menstruation in women. Treatment must incorporate herbs that promote Blood circulation and remove stasis, such as Tao Ren (Persicae Semen) and Hong Hua (Carthami Flos), continuing until purple clots are vomited or black stools are passed. If mistakenly diagnosed as Excess Fire and treated with cold-clearing methods, or as Yin Deficiency and treated with tonifying-nourishing methods, the Blood Stasis will become more entrenched, potentially evolving into Dry Blood Syndrome (Gan Xue Zheng). In early stages of Blood Stasis, the pulse is often wiry (Xian); cases with a simultaneous surging (Hong) pulse are easier to treat, as are those with thirst and desire to drink, indicating the presence of vital Qi (Sheng Qi). Conversely, cases with a short and choppy (Duan Se) pulse or without thirst are difficult to treat, as vital Qi is absent. When the sensation resembles hot soup rushing up and down, although Blood is stagnant, it still flows; when sensations resemble spiciness or broken skin fixed in one place, Blood has coagulated within the collaterals and membranes and ceased to flow. For flowing Blood stasis, resolve it using cooling methods assisted by Qi-tonifying herbs; for coagulated Blood stasis, resolve it using warming methods assisted by Qi-moving herbs. Materia Medica states that San Leng (Sparganii Rhizoma) can dissolve knife handles, exaggerating its ability to break down blood masses devoid of vital Qi.