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To treat *fuguju* (deep-seated abscess) characterized by swelling and heat, whether the lesion is unruptured or ruptured, or if pus discharge fails to heal the wound.

Take one black crucian carp (*Carassius auratus*), remove the intestines and viscera, fill with white salt until full, and sew shut with thread. Place in a copper or ceramic vessel, add water equivalent to one cup, and boil until the water is completely evaporated. The fish should become dry and charred, then grind into powder. Mix with lard for external application; if the wound is already ruptured, sprinkle the powder directly onto the lesion. Mild pain is expected, do not be alarmed.

To treat *fuguju* with continuous pus discharge that persists for a long time without healing. This formula can be taken internally regardless of whether the wound is ruptured or not.

Take *Cangzhu* (Rhizoma Atractylodis Chinensis), one jin (approx. 500g). Soak in rice-washing water for three nights, take out, wash clean, and sun-dry. Then soak the *Cangzhu* in the juice of decomposed hemp fibers, leaving only about two cun exposed above the liquid. Add twenty-one fruits of *Chuanjiao* (Fructus Zanthoxyli) and seven stalks of scallion white (*Congbai*). Boil until oil exudes and turns black. Wash clean, bake dry, and weigh. Combine with stir-fried *Poguozhi* (Fructus Psoraleae), chopped and stir-fried *Chuanlian* (Fructus Toosendan), *Fuling* (Poria), stir-fried *Boshang Huixiang* (Fructus Foeniculi), *Duhui Xiang* (Fructus Anisi Stellati), *Baizhi* (Radix Angelicae Dahuricae), and *Taoren* (Semen Persicae, peeled, de-veined, and stir-fried). Each of these latter ingredients should amount to half a jin.

Grind all ingredients into fine powder. Use refined honey to make pills the size of a golden dewberry seed. Take fifty pills per dose, administered with warm wine or salted water, at the patient's preference.

Another prescription: Burn oak bark (*Hupishu*) to ash, grind into powder, and take one *cunfang bi* (approx. 1 cubic inch) with rice soup.

Another prescription: Grind *Miduoseng* (Lithargyrum) into powder, mix with pig spinal marrow, and apply externally. This also treats chronic hemorrhoids and fistulas that fail to heal.

Practicing physicians consider *Shanghan* (Cold Damage) to be paramount among wind diseases, and *Yongju* (carbuncles and sores) to be primary among miscellaneous diseases, citing these two conditions as major and urgent. However, according to formula treatises, *Dingzhong* (malignant carbuncle) ranks even before *Yongju*, implying its urgency is even greater. Since this disease is rare in the Jiangnan region, physicians often neglect it. Yet, since the pathology exists, it must be known. Following the classification of *Qianjin Fang* (Essential Prescriptions Worth a Thousand Gold), I list them below. As I cannot fully investigate their origins, I dare not arbitrarily modify them.

1. *Mazi Ding* (Hemp Seed Carbuncle): A head rises on the skin like a millet grain, slightly black in color, with slightly red margins, often accompanied by itching. Avoid eating hemp seeds, wearing hemp clothes, and walking in hemp fields.
2. *Shi Ding* (Stone Carbuncle): Connected to skin and flesh, dark black like a black bean, very hard, needle insertion does not penetrate the flesh, with dull mild pain. Avoid contact with tiles, bricks, and stones.
3. *Xiong Ding* (Male Carbuncle): Black head, raised margins, pus forms within, yellow fluid discharges, size like a coin hole. Avoid sexual intercourse.
4. *Ci Ding* (Female Carbuncle): Head slightly yellow, resembling a moxibustion scar internally, raised margins with pus like a coin hole, central depression, red color. Avoid sexual intercourse.
5. *Huo Ding* (Fire Carbuncle): Resembles burn from boiling water or fire, black head, raised margins like red millet grains. Avoid moxibustion or heat therapy.
6. *Lan Ding* (Rotting Carbuncle): Slightly black color with white spots, ulceration with purulent discharge, size like a spoon face. Avoid hot food and rotting fabrics.
7. *San Shi Liu Ding* (Thirty-Six Carbuncles): Black floating head, shape like a black bean, large red margins. One appears today, two tomorrow, three the third day. If thirty-six appear, it is untreatable by medicine. Commonly called *Hei Ding* (Black Carbuncle). Avoid anger and accumulated sorrow/hatred.
8. *Sheyan Ding* (Snake Eye Carbuncle): Black head, superficial blistering, shape like a small bean, resembling a snake eye, generally hard. Avoid being looked at by malicious eyes or jealous people, and avoid toxic substances.
9. *Yanku Ding* (Salt Skin Carbuncle): Shape like a spoon face, all margins red, with black millet-like granules rising. Avoid salty food.
10. *Shuixi Ding* (Water Wash Carbuncle): Shape like a coin or coin hole, white head, black interior, fluid discharge, hard center. Avoid drinking sour water, washing the area with water, and crossing rivers.
11. *Daolian Ding* (Sickle Carbuncle): Width narrow like an onion leaf, length one cun. Left side flesh is blackened as if burned. Avoid needling, cutting with sickles/knives, and injury by iron blades. Can be treated with medicine.
12. *Fou'ou Ding* (Foaming Carbuncle): Curved and round body, slightly open, long and narrow like an onion leaf, yellow inside and black outside. Pricking the black area causes no pain; pricking the yellow area causes pain.
13. *Niuju Ding* (Ovine Contraction Carbuncle): Flesh protrudes, cannot be broken by pinching.

For these thirteen types, initial onset must present as itching before pain, chills before fever, and fever subsiding into chills. Symptoms include heavy limbs, headache, heart palpitations, and blurred vision. In severe cases, vomiting and regurgitation occur, which are difficult to treat. *Mazi Ding* presents only with itching throughout its course. Do not violate the recorded taboos; violation makes treatment difficult. *Fou'ou Ding* and *Niuju Ding* have no taboos; even if untreated, they are not fatal. To know if a taboo has been violated, observe if there is neck stiffness and extreme, unbearable pain in the lesion; these are signs of violation.