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[Formulas]
Nijin Gao (Mud-Gold Ointment): Treats various unexplained swellings and indurations in children, characterized by redness and heat. It is applicable to all types of Danliu (Dan tumors/erysipelas), re biao (hot blisters), and moist ulcerations; the same method applies to adults.
Take earthworm feces from shady ground, mixed with Shupi Xiao (calcined mirabilite/potassium sulfate, amounting to two-thirds of the earthworm feces). Grind them together into a fine powder, mix with fresh well water to form a thick paste, apply thickly to the affected area, and reapply when dry.

Chilong San (Red Dragon Powder): Treats Chi Du (red toxin), Huo Du (fire toxin), and Zou Zhu (pain migrating along meridians).
Take Fulong Gan (Zao Xin Tu / Hearth Earth) in any quantity, mix with egg white, and apply to the affected area.

[Formulas]
Niuhuang San (Calculus Bovis Powder): Treats various oral diseases in children, such as E Kou Chuang (Thrush/鹅口疮), Kou Chuang (oral ulcers), inability to suckle milk due to tongue swelling and heaviness, throat swelling and obstruction, and all forms of heat toxins.
Ingredients: Niuhuang (Calculus Bovis, 1 fen), Pian Nao (Borneolum Syntheticum/Borneol, 1 fen), Peng Sha (Borax, 1 fen), Xionghuang (Realgar, 2 fen), Qingdai (Indigo Naturalis, 2 fen), Puxiao (Mirabilite/Natrii Sulfas, 1.5 fen), Huanglian (Coptidis Rhizoma, powdered, 8 fen), Huangbai (Phellodendri Cortex, powdered, 8 fen), Chensha (Cinnabaris, 2 fen).
Grind all ingredients into a fine powder. Apply a small amount internally to the mouth each time.

Xiexin Tang (Decoction for Draining Heart): Treats Xiao'er Kou Gan (Pediatric Mouth Canker).
Grind Huanglian (Coptidis Rhizoma) into powder. Take an amount equivalent to "one character" (approx. 0.5-1g), mix with honey water, and administer orally.
Pediatric bitter taste and oral ulcers are caused by Heat in the Heart and Spleen. Red ulcers indicate Heart Heat; white ulcers indicate Spleen Cold; yellow ulcers indicate Spleen Heat.
Apply Wu Zhu Yu (Evodiae Fructus) powder mixed with vinegar to the soles of the feet (Yongquan acupoint area). This draws heat downward, leading to recovery. Although Wu Zhu Yu is hot in nature, its ability to guide heat downward is highly effective.

[Formulas]
Yuchan San (Jade Toad Powder): Treats Zouma Ya Gan (Running Horse Gum Rot/Gangrenous Stomatitis) in children, characterized by foul-smelling and rotting gums that erode the lips and nose. First, wash the area with Licorice water until bleeding occurs, then apply the medicine. This formula also treats Fei Chuang (obese sores/fistulas) on the body; it is effective immediately for all types of Gan Chuang (canker sores).
Ingredients: Ke Pi (Skin of Bufo bufo gargarizans/toad skin, specifically from non-croaking/non-jumping toads, wrapped in yellow mud and roasted until charred, 2.5 qian), Huanglian (Coptidis Rhizoma, 2.5 qian), She Xiang (Moschus/Musk, a little), Qingdai (Indigo Naturalis, 1 qian).
Grind into powder. If the lesion is moist, sprinkle the dry powder; if dry, mix with sesame oil and smear.

Another Prescription: Treats Zouma Ya Gan in children, which can cause rapid decomposition and death if not treated promptly.
Take the white scum from women's chamber pots, calcine it (approx. 1 qian), add Tong Lv (Chalcanthitum/Copper Vitriol, 3 fen), and She Xiang (Moschus/Musk, 1.5 fen). Apply to the affected area for immediate cure.

Lixiao San (Instant Effect Powder): Treats Zouma Ya Gan.
Ingredients: Huang Dan (Minium/Lead Tetroxide, refined by water flotation), Ku Fan (Alumen Exsiccatum/Dried Alum), Jing Zao (Chinese Jujube, burned with pits until carbonized but retaining substance).
Grind into a fine powder and apply to the affected area for miraculous effects.