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*The Lu Xin Jing* (Classic of the Cranium and Fontanelle) states: When a child is in the heat of summer, if the wet nurse bathes extensively with cold water, the milk may acquire cold qi, causing the blood vessels to stagnate. If the child is fed before their qi has stabilized, it will cause gastric toxicity and both red and white dysentery. This is the fault of the wet nurse. After bathing, one should allow the wet nurse to rest quietly for a long time until her breath and body temperature stabilize before feeding the infant, thus avoiding harm.

*Qian Jin Fang* (Essential Prescriptions Worth a Thousand Gold) discusses: Feeding infants should not be done to excess; overfeeding leads to vomiting. Whenever an infant vomits, it is due to excessive feeding. Emptying the breast before feeding ensures digestion. Feed the infant four times a day. If the umbilical cord has not yet healed, overfeeding allows wind pathogens to invade the umbilicus. In summer, failing to eliminate "hot milk" causes infant regurgitation and counterflow qi; in winter, failing to eliminate "cold milk" causes coughing and dysentery. If the wet nurse engages in sexual intercourse and then nurses, the infant may become emaciated and unable to walk with crossed legs. If the wet nurse has internal heat and nurses, (as *Qian Jin Yi Fang* notes: when the mother suffers from heat disease and nurses,) the infant may develop jaundice and lose appetite. If the wet nurse is angry and nurses, the infant may suffer from fright, Qi hernia, and upward rushing qi leading to mania. If the wet nurse has just vomited or had diarrhea and nurses, the infant becomes weak and emaciated. If the wet nurse is drunk and nurses, the infant develops fever and abdominal fullness. When nursing, the wet nurse should first vigorously massage the breasts to dissipate heat, preventing milk from spurting out and choking the infant. Temporarily withdraw the breast to let the infant breathe, then resume. Repeat this ten or five times, observing the infant's hunger and satiety to determine the appropriate frequency per day as a routine. Frequently express and discard residual old milk. If the infant lies down, the wet nurse should support the infant's head with her arm so that the breast is level with the infant's head to prevent choking. If the wet nurse feels drowsy, she must remove the nipple to avoid blocking the infant's mouth and nose, as she would no longer perceive the infant's hunger or satiety.

*Tai Ping Sheng Hui Fang* (Great Imperial Healer's Essential Prescriptions) discusses: There are strict regulations for wet nurses. Without adhering to taboos, the infant will suffer from myriad diseases. By understanding self-care and regulation, one can ensure the infant remains healthy and lives long. Therefore, in spring and summer, one must strictly avoid nursing while hot, which inevitably causes fever, malnutrition syndromes (Gan), and vomiting. In autumn and winter, do not use cold milk to feed the infant, which inevitably causes abdominal distension and emaciation. Do not nurse immediately after anger, which leads to manic disorders. Do not nurse after intoxication, which leads to convulsions, Tian Diao (infantile tetanus), and acute wind diseases. If the mother is pregnant, she should not nurse, as this causes fetal jaundice and spinal Gan. If the mother is ill, she should not nurse, leading to epilepsy and wind diseases. After vomiting, do not nurse, causing regurgitation and emaciation. After overeating, do not nurse, leading to excessive heat and rapid breathing. (All books cite these three texts as authority, with no differing opinions.)

*Ying Ru Shu* (Book on Infants) states: From the first to the seventh day after birth, take one he of milk, divided into three doses. From the twentieth to the thirtieth day, take three he divided into three doses. From the eighth to the fifteenth day, take one and a half he divided into three doses. From the thirtieth to the fortieth day, take five he divided into three doses. From the sixteenth to the twentieth day, take two he divided into three doses. For those over forty days, follow this standard, adjusting incrementally.

*Ying Tong Bao Jian* (Precious Mirror for Infants and Children) states: If the wet nurse drinks alcohol or eats excessively/improperly, do not feed the infant, lest it trigger untreatable Huo Luan (cholera-like syndrome).

Qian Yi's Wu Yao San (Lindera Powder): Treats wet nurses with imbalance of cold and heat, frequent heart and abdominal pain, watery diarrhea, or poor quality milk.
Tiantai Wu Yao (Linderae Radix), Xiang Fu Zi (Cyperi Rhizoma, broken, using the white part), Gao Liang Jiang (Galangali Rhizoma), Chi Shao Yao (Paeoniae Radix Rubra) (equal parts).
Grind into powder. Take one large qian per dose, decoct with one cup of water until reduced to 0.6 cup, and take warm. If there is heart/abdominal pain, decoct with wine. For watery diarrhea, administer with rice water, at any time.

*Zhuang Shi Jia Chuan* (Zhuang Family Transmission) treats wet nurses with constitutive heat causing yellowing and emaciation in infants. Jiang Huang San (Curcuma Powder):
Jiang Huang (Curcumae Longae Rhizoma), Ren Shen (Ginseng Radix et Rhizoma, remove the rhizome/chin), Chen Ju Pi (Citri Reticulatae Pericarpium).
Grind equal parts into coarse powder. Take one qian per dose, decoct with one cup of water until reduced to 0.6 cup, strain, and take warm. Administer once daily.