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Treats dampness in the intestines and stomach, leading to abdominal distension and fullness accompanied by hematochezia (blood in stool).
Cangzhu Rhizoma Atractylodis Macrocephalae, Nongpo Cortex Magnoliae Officinalis, Chenpi Pericarpium Citri Reticulatae, Danggui Radix Angelicae Sinensis, Zhike Fructus Aurantii Immaturus (each 1 liang), Huaihua Flos Sophorae Flavescentis (2 liang), Gancao Radix Glycyrrhizae uralensis, Wumei Fructus Mume (each 5 qian). Take 5 qian each time, decoct in water, and take on an empty stomach.

Treats accumulation of heat in the intestines and stomach, or hematochezia caused by alcohol toxicity.
Huanglian Radix Coptidis (4 liang: 1 liang stir-fried with wine, 1 liang stir-fried with ginger juice, 1 liang roasted in ash fire, 1 liang used raw), Huangqin Radix Scutellariae, Fangfeng Radix Saposhnikoviae (each 1 liang). Grind into fine powder, make pills using wheat paste, size of Sophora seeds. Take 50 pills each time, soaked in rice wash water, taken down with Zhike Fructus Aurantii Immaturis water.

Treats hematochezia after defecation, accompanied by abdominal pain, known as heat-toxicity hematochezia.
Shaoyao Radix Paeoniae Alba, Huanglian Radix Coptidis, Danggui Radix Angelicae Sinensis (each 5 qian), Dan Gui Ramulus Cinnamomi (5 fen), Zhi Gancao Radix Glycyrrhizae uralensis preparata (2 qian), Dahuang Radix et Rhizoma Rhei. Take 1 liang each time, decoct in water and take. If pain is severe, add Muxiang Radix Aucklandiae, Binglang Semen Arecae.

Treats deficiency-cold of the zang-fu organs, persistent hematochezia, with withered yellow blood color, and emaciation over a long period. Hemorrhagic diseases are generally caused by fire; saying it is deficiency is acceptable, but saying it is cold is not accurate. However, after a long duration, the fire energy has declined, and the zang-fu organs possess both deficiency and cold characteristics. Danxi stated that for persistent hematochezia that does not heal, warm agents should be used later.
Cebaiye Folium Platycladi, Lurong Cornu Cervi Pantotrichum (fire-dehaired, boiled in vinegar), Fuzii Radix Aconiti Lateralis Preparata (soaked, skin and umbilicus removed), Chuanxuduan Radix Dipsaci, Ejiao Colla Asini (stir-fried with Gefen Powder), Huangqi Radix Astragali, Danggui Radix Angelicae Sinensis (remove root neck, soak in wine, each 1 liang), Baifan Alumen (calcined, 5 qian). Grind into fine powder, make pills using vinegar-boiled rice paste, size of Sophora seeds. Take 70 pills each time, taken on an empty stomach with rice drink.
Another prescription:
Treats hematochezia regardless of whether new or old, with miraculous effect.
Use finely powdered calcined alum (Baifan), 7-8 fen, adults 1.5 qian, mix into an egg, fry until cooked, cut into small pieces, swallow with plain warm water on an empty stomach.

Danxi said: Intestinal wind bleeding occurs exclusively in the stomach and large intestine. For cases complicated by wind, Cangzhu Rhizoma Atractylodis Macrocephalae, Qinjiao Radix Gentianae Macrophyllae, Shaoyao Radix Paeoniae Alba, Xiangfu Rhizoma Cyperi Rotundi are suitable. Intestinal wind refers to pathogenic factors entering from outside, appearing immediately upon exposure, hence the blood is clear. Zangdu (Visceral toxin) involves accumulated toxins manifesting only after a long time, hence the blood is turbid. To treat intestinal wind, disperse wind and eliminate dampness; to treat Zangdu, clear heat and cool blood. One must also assess deficiency/excess and new/old nature. New and excess conditions are treated with descending and purging methods; deficient and chronic conditions are treated with ascending and tonifying methods. Blood in the body has yin and yang aspects. Yang blood follows qi, circulates within the vessels, harmonizes the five zang organs, and distributes to the six fu organs, called Ying-blood (Nutritive blood). Yin blood resides in the collaterals, guarding the zang organs, nourishing spirit and qi, and moistening sinews and bones. If injured by internal or external pathogens, either the Yang blood following the meridians reaches the injury site, is obstructed by pathogens, and leaks out of the meridians; or the Yin blood residing in the collaterals, due to lingering pathogens, ruptures and exits. Both will seep into the intestines and stomach and be excreted. The common people generally call this intestinal wind, not knowing that wind is merely one of the Six Excessive Factors (Liu Yin). If the intestines and stomach are affected by Heat and Fire excessive factors, or constrained by Cold, Dryness, and Dampness, along with dietary and labor injuries damaging the Yin collateral blood, can this also be called intestinal wind? The *Zhen Jing* (Needle Classic) states: Injury to Yang collaterals leads to external blood overflow causing hematemesis and epistaxis; injury to Yin collaterals leads to internal blood overflow causing hematochezia and hematuria. This is correct. One cannot use purely cold-cooling medicines; pungent dispersing agents must be added as assistants. For chronic non-healing cases, regulate Stomach Qi and combine with ascending/lifting herbs. Essence, Qi, Blood, and Qi all originate from Grain Qi. Hematochezia often resolves with Stomach-regulating medicines. Using only bitter-cold medicines without regulating Spleen and Stomach is the work of inferior doctors who cut off vital energy and endanger life.

The intestines and stomach originally have no blood; hematochezia is a disease of the Large Intestine. Why does the Large Intestine bleed? It is due to pathogenic invasion. If Yin collaterals are not injured and the intestines/stomach are not deficient, even with external pathogens, disease cannot occur. Only through drunkenness, overeating, sexual indulgence, sitting/lying in wind-dampness, and indulging in raw/cold foods, leading to damp-heat injuring Yin collaterals, can external pathogens take advantage. The *Classic* says: Injury to Yin collaterals leads to internal blood overflow and hematochezia; it also says, those with Jieyin (Knotted Yin) bleed one sheng, if knotted again two sheng, if knotted thrice three sheng. This refers to internal knotting of Yin Qi, unable to circulate outward, seeping into the intestines, causing disaster from cold-dampness and dominance of Yin pathogens. What are external pathogens? Wind, Cold, Summer-heat, Dampness, Heat. Wind easily injures the Liver; Liver injury fails to store blood, leading to downward flow. Drinking cold liquids after intoxication causes internal cold injury, congealing blood, which seeps into the Large Intestine and flows down. Internal and external dampness injury congeals Stomach Qi, flowing down with Qi. People consuming rich foods, alcohol, and sensual pleasures, or laborers working excessively, cause heat accumulation in the Lower Jiao. However, damp-toxicity hematochezia presents without abdominal pain; heat-toxicity hematochezia presents with frequent abdominal pain. Furthermore, internal injury with insufficient Yang Qi, where Yin in the Lower Jiao lacks Yuan-Yang support, leads to bleeding. Books describe patients with pale faces, floating and weak pulses, feeling absent upon pressure, as having hematochezia. Spleen deficiency with sinking of Yang Qi, failing to control blood, causes blood to descend with Qi. Yin follows Yang, Blood follows Qi. The Spleen is the source of Qi and Blood production, thus requiring Bu Zhong Sheng Yang (Tonify Middle and Ascend Yang) and resolving with Stomach medicines. Bleeding before defecation is called Yuanxue (Remote Blood), associated with Foot Yangming Stomach Meridian entering the Stomach; bleeding after defecation is called Jin xue (Close Blood), associated with Hand Yangming Large Intestine Meridian seeping downward. Some consider Heart/Lung as Remote Blood (Yang) and Liver/Kidney as Close Blood (Yin). Those discussing "Intestinal Wind" and "Zangdu" actually do not mean external Wind or swelling-Heat Toxicity. When Yangming Qi fails to ascend and sinks into the Large Intestine, the intestinal meridians sink with Qi deficiency. Long-term sinking leads to damp-heat accumulating into toxicity. Arriving first with sinking Qi, with no abdominal pain, clear serum, and bright red color, it is named Intestinal Wind, meaning external pathogens enter and appear upon exposure. It is called Cold-complicated hematochezia. Later generations, because ancient formulas often used Jingjie (Schizonepeta) and Fangfeng (Saposhnikovia) for ascending/dispersing, mistakenly categorized it as Wind, but it is not actually Wind. Zangdu results from prolonged Intestinal Wind, where Qi and Blood become deficient, sinking worsens daily, damp-heat accumulates in the Large Intestine, forming nests/pockets, becoming vessels for accumulated blood, coming before or after stool. With abdominal pain, turbid blood, and dark color, it is named Zangdu, resulting from internal injury and accumulation, manifesting only after a long time. It is called Heat-complicated hematochezia. Although named toxicity, it is not actually toxic. Intestinal Wind is Wind Pathogen overflowing in intestines/stomach. Zangdu is Damp Pathogen overflowing in intestines/stomach. If blood shoots like a thread, it is Chongzhi (Worm Hemorrhoids). Blood from Intestinal Wind/Zangdu comes from intestines/viscera; blood from Five Hemorrhoids comes from anal erosion points.
Generally, hematochezia with cool body and cold blood indicates survival; hematochezia with hot body and warm blood indicates death.
Another prescription:
Treats accumulation-heat hematochezia.
Cangzhu Rhizoma Atractylodis Macrocephalae, Chenpi Pericarpium Citri Reticulatae (each 1.5 liang), Huanglian Radix Coptidis, Huangbai Cortex Phellodendri, Tiao Qin Radix Scutellariae (each 0.75 liang), Lianqiao Fructus Forsythiae (0.5 liang). Grind into powder, mix with 6 liang of raw honey, make pills size of Sophora seeds. Take 50-70 pills each time, taken down with warm water.