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The upper eyelids show red meridians extending downward to penetrate the pupil. The fontanelle protrudes, and in severe cases, becomes sunken into a pit. The nostrils are black and dry; the abdomen is distended with visible blue veins. The eyes are mostly fixed in a staring gaze, unable to rotate. The fingernails turn cyanotic-black, and the infant suddenly makes sounds resembling those of a crow. The tongue extends and may prolapse from the anus (or refers to flaccid tongue protrusion); the infant gnashes teeth and bites people. Breathing is rapid and labored like a fish opening its mouth, yet crying produces no sound. Once roundworms are expelled, death is certain. Even if medication is administered urgently for rescue, fewer than one in ten survives.

Heart disease manifests as darkening of the pupils; this is Kidney Water overcoming Heart Fire, leading to critical failure on Ren-Gui days (Water days). Liver disease manifests as blackening of the skin; this is Lung Metal overcoming Liver Wood, leading to critical failure on Geng-Xin days (Metal days). Spleen disease manifests as bluish lips; this is Liver Wood overcoming Spleen Earth, leading to critical failure on Jia-Yi days (Wood days). Lung disease manifests as swollen cheeks and reddened eyes; this is Heart Fire overcoming Lung Metal, leading to critical failure on Bing-Ding days (Fire days). Kidney disease manifests as facial edema and yellowish lips; this is Spleen Earth overcoming Kidney Water, leading to critical failure on Wu-Ji days (Earth days).

Chao Yuanfang stated: When a child is in the womb, if the mother consumes heat-toxic substances or takes heat-inducing medicines, the infant will be born with body heat, ruddy complexion, closed eyelids, hot mouth, excessive phlegm, panting and urgency, constipation, and scanty, painful urination. This is mostly due to heat accumulation in the fetus, or misadministration of warm tonics, causing heat to accumulate internally and steaming the fetal qi, thus producing this syndrome. If left untreated for a long time, it will give rise to conditions such as thrush (white plaques on oral mucosa), double tongue (swelling under the tongue resembling a second tongue), purple-red dan tumors (skin redness like cinnabar), and acute convulsive wind spasms, all originating from fetal heat.

For infants suffering from fetal heat syndrome, one should first administer Mutong San decoction to the nursing mother so that the medicinal properties pass through the breast milk for the infant to drink. This unblocks Heart Qi and resolves vexatious heat. One must not seek rapid effects. As the nursing mother takes the medicine, the heat will gradually dissipate, with almost no chance of failure. If cold-natured drugs are used to attack the infant directly, vomiting will inevitably occur, leading to major complications. The nursing mother must still avoid spicy, pungent, alcoholic, wheat-based foods, and rich flavors, so that recovery can be easily achieved.

Mutong Decoction: Treats fetal heat in infants, various heat syndromes causing closure and stagnation of the intestines and bowels, as well as sores, toxins, dan spots. Taken by both mother and child.
Ingredients: Tongcao (Akebiae Caulis) [Note: Text says Mutong Dou, likely referring to Akebia or similar, but standard WHO term for Mutong is Aristolochiae Manshuriensis Radix/Caulis or Akebiae Caulis depending on context. Here translating literally as Mutong Bean/Dou implies a specific variant or typo in ancient text, usually treated as Tongcao/Akebiae Caulis in modern safety contexts, but strictly following text "Mutong Dou" -> Akebiae Caulis (Tongcao)] (5 qian each), Rhubarb (Rhei Radix et Rhizoma), Red Poria (Poria Cocos), Licorice (Glycyrrhizae Radix et Rhizoma) (3 qian each), Kikyo (Platycodonis Radix - *Correction*: Qu Mai is Dianthi Herba), Dianthus Herb (Dianthi Herba), Talcum (Talcum), Gardenia Fruit (Gardeniae Fructus), Plantago Seed (Plantaginis Semen), Scutellaria Root (Scutellariae Radix) (1 qian each).
Preparation: Use 1.5 cups of water, 10 stems of Juncus effusus (Junci Medulla), and 5 leaves of Mint (Menthae Haplocalycis Herba). Decoct together.
Nursing Method: The nursing mother takes this medicine.
Alternative Formula: Polyporus (Polypori Umbilicati Sclerotium), Alisma Rhizome (Alismatis Rhizoma), Red Poria (Poria Cocos), Trichosanthes Root (Trichosanthis Radix), Artemisia Capillaris (Artemisiae Scopariae Herba), Raw Licorice (Glycyrrhizae Radix et Rhizoma), Raw Rehmannia Root (Rehmanniae Radix), Gardenia Fruit (Gardeniae Fructus) (equal parts).
Preparation: Coarsely crush. Take 6 qian per dose, decoct in water. After meals, the nursing mother expresses and discards retained milk, then takes this medicine.

Gandou Decoction: Treats fetal heat in infants.
Ingredients: Licorice (Glycyrrhizae Radix et Rhizoma) (1 qian), Black Soybean (Glycines Max Semen) (2 qian), Light Bamboo Leaves (Phyllostachys nigra var. henonis Folium) (10 slices).
Preparation: Coarsely crush. Use 1 cup of water, 7 stems of Juncus effusus (Junci Medulla). Decoct. Take at any time.

Sisheng San: Treats infants whose eyes fail to open after birth due to fetal heat toxicity.
Ingredients: Juncus effusus (Junci Medulla), Coptis Rhizome (Coptidis Rhizoma), Bark of Qin Pi (Fraxini Cortex), Equisetum (Equiseti Herba).
Preparation: Use 1 cup of water, 1 jujube. Decoct. Clarify and remove dregs. Wash the eyes at any time; the eyes will naturally open. Afterwards, take Dihuang Gao.

Dihuang Gao: Treats fetal heat.
Ingredients: Gardenia Fruit (Gardeniae Fructus), Mung Bean Powder (Phaseoli Radiati Semen Pulvis) (each 2.5 liang), Refined Licorice (Glycyrrhizae Radix et Rhizoma) (6 qian).
Preparation: Grind into fine powder. Crush fresh Rehmannia Root (Rehmanniae Radix) to extract juice (2.5 liang). Mix well with 1.5 liang of good honey. Place in a thin earthenware vessel and boil in a copper pot until it forms a paste-like ointment resembling thin porridge. After cooling, mix in the previously prepared powders. Grind uniformly in a mortar. Form pills the size of an euryale seed (Qianshi). Each time, take half a pill and dissolve it in Ophiopogon Decoction (Ophiopogonis Decoctio) for administration.