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Treats all sores and ulcers that fail to heal. Its application expels pus and promotes tissue regeneration; it is a sacred medicine for external surgery.
Angelicae Dahuricae Radix (Bai Zhi, 5 qian)
Angelicae Sinensis Radix (Gui Shen, 2 liang)
Lithospermi Radix et Rhizoma (Zi Cao, 2 qian)
Glycyrrhizae Radix et Rhizoma (Fen Cao, 1.2 liang)
Dracaenae Sangue (Xue Jie, 4 qian)
Cera Flava (Bai La, 2 liang)

First, soak the first four herbs in oil for three days. Slowly boil until the herbs are withered and black. Strain out the dregs, pour the oil into a copper ladle, bring to a boil, add Dracaenae Sangue (Xue Jie) until completely dissolved, then add Cera Flava (Bai La).

External application:
Burn the hard stalks of Allium sativum L. (Da Suan) to ash while preserving its medicinal property, grind into powder, and apply to the affected area; the fistula will naturally disappear. Alternatively, find scale insects on plum trees, roast them to ash preserving their property, grind into powder, and apply externally to eliminate the condition.

Treats chronic cold fistulas and long-standing malignant ulcers with necrotic flesh.
Chrysocollae Calx (Tong Lv)
Haliotidis Concha (Han Shui Shi, 3 qian each)
Talcum (Hua Shi, 3 qian each)
Alumen (Ming Fan)
Calomelas (Ni Fen)
Realgar (Pi Shuang)
Muscovite (Yun Mu Shi, 1.25 qian each)

Grind all ingredients into fine powder. Mix with paste to form suppositories, roughly the thickness of matting grass. Insert into the ulcer cavity according to its depth for treatment. Preparation should be done on sunny days.

Urinae Coagulatum (Ren Zhong Bai, a small amount)
Leonuri Herba (Yi Mu Cao, including stems and leaves, roasted) preserve medicinal property and grind into powder. First, use a silver knife to make a cross-shaped incision, drain the evil blood, and sprinkle the powder inside.

Another prescription: Applicable to any type of Ding sore (furuncle), even if it has progressed to Zou Huang (systemic toxicity/spread), provided there is no fullness or hardness below the heart, it can be treated.
Take a few pieces of black bricks from an old latrine pit. Grind them finely with water. Decoct together with Glycyrrhizae Radix et Rhizoma (Gan Cao) to make a concentrated decoction. Strain and drink. After ingestion, prepare a clean bucket and wait for the patient to excrete black fluid.

Another prescription:
Grind Carbonis Vegetableis (Shui Mei) finely. Mix with wine and take orally. After ingestion, follow the previous method using a clean bucket to wait for the excretion of detoxifying fluid; recovery will be immediate. After detoxification, nourish and tonify with thin rice gruel. This is truly a divine prescription for treating emergencies.

Eupolyphaga seu Steleophaga (Di Bie Chong, one insect). Wrap in several layers of wet straw paper. Roast on a tile until the paper turns to ash. Peel out the insect, grind into powder. Mix with brown sugar and oil, and apply topically. Apply around the base of the lesion according to the diameter of the root plate.

Treats Ding toxic malignant ulcers accompanied by difficult urination.
Chrysanthemi Flos (Bai Ju Hua), including roots, stems, and leaves, pounded into a paste. Add a small amount of water, squeeze out the juice. Take warm with hot wine. Apply the dregs to the affected area. Pain stops and swelling subsides immediately.