The Niuhuang San (Coral Powder) from *Jubao Fang* is a prescription for infants from birth to two or three years old, treating all conditions caused by wind pathogen manifesting as Chi Bai Liu (red and white skin eruptions), wandering pruritus (itching), and limb discomfort.

Ingredients include: Niu Huang (Calculus Bovis), Zhusha (Cinnabaris), Wo Rou (Musculus Mantidis), Gan Xie (Scorpio dried), Bai Jiang Can (Bombyx Batryticatus dried), Tian Ma (Gastrodiae Rhizoma), Bai Fu Zi (Typhonii Rhizoma), Ru Xiang (Olibanum), She Xiang (Moschus) (each 1 fen), Sheng Long Nao (Borneolum Syntheticum, 1 qian), Tang Lang Chi (Alae Mantis, 5 pairs, collected in the seventh lunar month).

The above eleven ingredients are ground into a fine powder. Each dose is "yi zi" (a traditional small weight measure), taken with mint water decoction. For newborns, after bathing, a small amount of breast milk is used to mix and apply the powder to the mouth, permanently eliminating congenital diseases.

In *Chao Shi Bing Yuan*, the condition of sudden cyanosis and blackening of the abdominal skin in children is described as follows: When children sweat, their cou li (pores and interstitial spaces) open, allowing wind-cold pathogens to invade. Cold combats with blood, stopping at areas where muscles are deficient, causing blood qi to become stagnant and sluggish, unable to nourish the skin. When wind-cold combats the abdominal skin, it turns cyan and black.

According to *Ying Tong Bao Jian*: Blood coagulation in children occurs because their flesh has not yet fully formed at birth. If wrapped in new cotton and thick clothes, the blood is heated but fails to transform into muscle tissue, leading to coagulation. The symptoms include dark cyan discoloration of the body, crying without sound, and refusal to nurse.

*Qian Jin Fang* provides a prescription for treating sudden cyanosis and blackening of the abdominal skin in children.

Apply Hu Fen (Galena/Lead Powder) mixed with wine to the affected area. If not treated urgently, death will occur within moments.

*Zi Mu Mi Lu* prescribes this formula for children with sudden cyanosis, blackness, and redness of the abdominal skin, accompanied by inability to breathe; it should be used immediately.

Place Nu Qing powder into the child's mouth and administer with wine. This formula is also effective for adults.

*Tai Ping Sheng Hui Fang* prescribes this urgent formula for children with sudden cyanosis and blackness of the abdominal skin and dyspnea.

Take Ku Shen (Sophorae Flavescentis Radix), one liang, cut and pounded, sifted finely into a powder. Administer half a qian mixed with vinegar water at any time. Adjust the dosage according to the child's size.

*Tai Ping Sheng Hui Fang* Another Prescription

Take half a liang of rotten coffin wood, decoct in one zhong cup of vinegar until reduced to six parts. Strain and take half a he warm. Adjust the dosage according to the child's size.

*Tai Ping Sheng Hui Fang* Another Prescription

Crush Jing Zi (Seeds of Vitex trifolia or similar), add a little water, squeeze out the juice, and take half a he warm. Adjust the dosage according to the child's size.

*Moxibustion Method* from *Qian Jin Fang*: Treats sudden cyanosis and blackening of the abdominal skin in children; if not treated urgently, death ensues quickly. Apply moxa to five points: one cun above, below, left, and right of the umbilicus (half cun away), and one cun below the Jiwei bone (Xinjiang CV15). Three moxa cones per point.