It is the central soil block of a stove that has been smoked and burned by firewood for a long time. When dismantling or repairing a firewood stove (or a wood-fired kiln), the sintered soil block is removed, and the charred parts and impurities are cut away with a knife to obtain it.

bubble_chart Morphological Characteristics

It is irregular in shape and varies in size. The entire mass is reddish-brown, with knife-cut marks on the surface. It is relatively hard but easily crushed, with powder falling off. The cross-section is fine and soft, slightly darker in color, often with small honeycomb-like pores. It has a smoky smell and a mild taste. The best quality is characterized by large pieces, reddish-brown color, and fine, soft texture. It is partially soluble in water, partially dissolves with acid, and produces bubbles. When the acid solution is mixed with a 5% potassium ferrocyanide test solution, it turns blue-green and forms a blue precipitate.

bubble_chart Properties and Meridians

Acrid, warm.

1. Bielu: "acrid, slightly warm."
2. Yaoxing Lun: "salty, nontoxic."

1. Bencao Qiuzhen: "act on liver and spleen channels."
2. Bencao Biandu: "act on spleen and stomach channels."

bubble_chart Efficacy

Warming the middle and drying dampness, stopping vomiting and bleeding.

bubble_chart Indications

Treats vomiting and nausea, abdominal pain and diarrhea, hematemesis, epistaxis, bloody stool, hematuria, morning sickness in women, menorrhagia and metrostaxis, leukorrhea, abscesses, and ulcers.

1. Bielu: "Mainly treats women's menorrhagia, hematemesis, relieves cough and counterflow, stops bleeding, and eliminates toxic qi from abscesses."
2. Rihuazi Bencao: "Treats nosebleeds, bloody defecation, leukorrhea, menorrhagia, spermatorrhea, and hematuria. Promotes childbirth and expulsion of the placenta."
3. Bencao Mengquan: "Prevents seasonal epidemics and calms the fetus. Grind finely and take with water."
4. Gangmu: "Treats heart pain and madness. Protects the fetus during pregnancy and treats various sores."
5. Bencao Beiyao: "Regulates the middle, stops bleeding, removes dampness, and reduces swelling."
6. 《Luchuan Materia Medica》: "Treats slow convulsions in children."

bubble_chart Usage and Dosage

bubble_chart Cautions and Contraindications

Yin deficiency loss of blood and heat pattern vomiting and regurgitation contraindicated.

1. Bencao Jingshu: "Not suitable for those with yin deficiency hematemesis. For severe abscesses and toxins that are difficult to resolve, it should not be used alone."
2. Bencao Congxin: "Do not use if there is no dampness."

bubble_chart Modern Pharmacology

Mainly composed of silicic acid, alumina, and iron oxide; in addition, it contains sodium oxide, potassium oxide, magnesium oxide, calcium oxide, etc.

1. Pigeons were administered Cooking Stove Earth decoction at 2g/kg, twice a day for a total of 4 times, which showed an antiemetic effect against vomiting induced by intravenous injection of Rehmannia tincture, mainly manifested as a reduction in the number of vomiting episodes, with no significant change in the latency period of vomiting.
2. It was ineffective against vomiting induced by apomorphine in dogs.

bubble_chart Selected Prescriptions

1. To treat regurgitation: Take soil from the stove, preferably over ten years old, grind it into fine powder, and mix with rice water to take two to three qian. (Bai Yi Xuanfang)
2. To treat heart pain, whether cold or hot: Take powdered Cooking Stove Earth, boil it in water, and take a square-cun spoonful. If it's cold, mix with wine and take it to recover. ("Emergency Rescue Formula")
3. To treat hematemesis, bloody diarrhea, and heart abdominal pain: Take equal parts of old wall soil, soil from the ground stove, and Cooking Stove Earth. Take a fist-sized piece each time, boil in two bowls of water until reduced to one bowl, clarify, and take. Follow with white porridge for nourishment. (Puji Fang, Fulong Powder)
4. To treat hematemesis and persistent nosebleeds: Take half a sheng of Cooking Stove Earth. Wash with a large sheng of freshly drawn water, extract the juice, mix with honey, and take in one draught. ("Guangli Fang")
5. To treat bloody stool with blood following stool: Take three liang each of Liquorice Root, Dried Rehmannia Root, Bai Su, Aconite Lateral Root (roasted), Donkey-hide Gelatin, and Skullcap Root, and half a jin of furnace soil. Boil these seven ingredients in eight sheng of water until reduced to three sheng, divide into two doses, and take warm. (Jingui Yaolue Oven Yellow Earth Decoction)
6. To treat women's blood leakage: Stir-fry half a liang of Cooking Stove Earth, take one liang of silkworm droppings, and one liang of Donkey-hide Gelatin. Grind into powder, mix with warm wine, and take two to three qian on an empty stomach until effective. (Bencao Yanyi)
7. To treat postpartum blood qi attacking heart pain and retention of foul substances: Grind soil from the center of the stove into powder, take two qian with wine, and it will expel the foul substances effectively. ("Emergency Rescue Formula")
8. To treat childhood erysipelas: Take powdered yellow soil from under the stove, mix with water from a roof fistula disease, or freshly drawn water, or egg white or oil, and apply. Replace when dry. (Zhouhou Fang)
9. To treat childhood carcinoma of the tongue: Take powdered yellow soil from under the stove, mix with vinegar, and apply to the tongue. (Qianjin Fang)
10. To treat childhood umbilical sores that do not heal: Take Cooking Stove Earth, grind into fine powder, and apply. (Shenghui Fang)
11. To treat chronic shank ulcers that do not heal: Take powdered yellow soil from inside the stove (preferably old), Phelloendron Bark, red lead, red halloysite, and calomel powder in equal parts. Mix with clear oil, apply on oiled silk, and stick it on. Do not move it, even if it itches, endure it for good effect. ("Ji Ji Xian Fang")
12. To treat otopyorrhea (suppurative otitis media): Take half a liang of finely ground Cooking Stove Earth, mix with lard to form a jujube pit-sized ball, wrap in cotton, and insert into the ear. Change twice a day and once at night. (Shengji Zonglu)
13. To treat abscesses and swellings: Mix Cooking Stove Earth with strong vinegar to form a paste, spread on cloth, and apply. Replace when dry. (Qianjin Yifang)