儿生自乳养者。一切不论。若令乳母乳养者。必择其人。若有宿疾。狐臭瘿 。上气喘嗽。疥癣头疮。龟胸驼背。
鼻紧唇。痴聋喑哑。颠狂惊痫。痈疽等疾。并不可令乳儿也。
凡乳母乃血气化为乳汁。则吾性善恶。悉由血气所生。应喜怒饮食。一切禁忌并宜戒慎。若纵性恣意。因而乳儿。
则令儿感生疾病也。若房劳乳儿。则令儿瘦瘁。交胫不能行。若醉以乳儿。则令儿身热腹满。若蓄热乳儿。则令儿变黄。
不能食。若怒作乳儿。则令儿惊狂上气。若吐下乳儿。则令儿虚羸气弱。是皆所忌也。
凡每乳儿。乳母当先以手按散其热。然后与儿吮之。若乳汁涌。恐儿咽乳不及。虑防呛噎。则辄夺之。令儿少息。
又复与之。如是数反则可也。又当视儿饥饱节度。一日之中，知几乳而足量以为常。每于早晨。若有宿乳。须当捻去。
若夏月不去热乳。令儿吐 。冬月不去寒乳。令儿咳痢。又若儿大喜之后。不可便乳。令儿惊痫。若儿大哭之后。不可
便与乳。令儿吐泻。又乳儿不可太饱。恐停滞不化。若太饱。则以空乳令吮则消。
凡每乳儿。乳母当以臂枕儿头。令儿口与乳齐。乃乳之。不可用膊。即太高。令儿饮乳不快。多致儿噎。又乳母欲
寐。则夺去其乳。恐睡着不觉。被乳填沃口鼻。别生其他事。又且不知儿饥饱也。
凡儿生六十日。目瞳子成。能识人。百日。任脉反复。一百八十日。尻骨成。能独坐。二百日。掌骨成。能匍匐。
三百日。膑骨成。能独立。三百六十日，膝骨成。能移步。乳母常须根据时按节。续续教引。使
儿能会。此是定法也。即不得常常抱持。过时都不教引。致令儿筋骨弛堕。又恐成腰脚之疾也。
For infants raised and nursed by their biological mothers, this discussion does not apply. If a wet nurse is employed to nurse the infant, one must carefully select the candidate. If the wet nurse suffers from chronic diseases such as fox odor (body malodor), goiter (enlargement of the thyroid gland), asthma with coughing, scabies, tinea capitis, pigeon chest or hunchback, tight nose and lips, deafness and muteness, mania, epilepsy, carbuncles, and sores, she must not be allowed to nurse the infant.
The milk produced by a wet nurse is transformed from blood and qi; thus, the goodness or badness of her temperament is entirely generated by her blood and qi. Her emotional fluctuations (anger and joy) and dietary taboos must all be strictly observed and avoided. If she indulges her temper and acts recklessly while nursing, it will cause the infant to contract diseases. Nursing immediately after sexual intercourse will cause the infant to become emaciated and weak, with crossed legs unable to walk. Nursing while drunk will cause the infant to have a feverish body and abdominal distension. Nursing when there is accumulated heat in the body will cause the infant to turn yellow and lose appetite. Nursing while angry will cause the infant to become startled, manic, and suffer from upward rushing of qi. Nursing after vomiting or diarrhea will cause the infant to become frail and weak in qi. All these are prohibited.
Before each nursing session, the wet nurse should first use her hand to massage and dissipate the heat in the breasts, then allow the infant to suckle. If the milk flow is too vigorous, fearing the infant cannot swallow fast enough and risking choking, the nurse should temporarily withdraw the breast, let the infant rest briefly, and then resume. This process may be repeated several times. One must also observe the infant's hunger and satiety levels, determining how many feedings per day constitute an adequate amount as a routine. Every morning, any residual milk must be expressed and discarded. In summer, failing to remove "hot" milk will cause the infant to vomit; in winter, failing to remove "cold" milk will cause the infant to cough and suffer from dysentery. Furthermore, if the infant has just experienced great joy, nursing should not occur immediately, lest it induce epilepsy due to shock. If the infant has just been crying loudly, nursing should not occur immediately, lest it induce vomiting and diarrhea. Additionally, the infant should not be overfed, as this may lead to food stagnation and indigestion. If the infant is too full, offering an empty breast for sucking can help aid digestion.
During each nursing session, the wet nurse should support the infant's head with her arm, aligning the infant's mouth with the nipple before nursing. Using the shoulder as support is inadvisable as it positions the breast too high, causing discomfort during feeding and often leading to choking. Moreover, if the wet nurse feels drowsy, she should remove the breast from the infant's mouth to prevent falling asleep unnoticed, which could result in milk flooding the infant's mouth and nose, causing other accidents, and also prevents her from knowing whether the infant is hungry or full.
At sixty days old, an infant's pupils are fully formed, and they can recognize people. At one hundred days, the Ren Mai (Conception Vessel) circulation becomes complete. At one hundred and eighty days, the sacral bone develops, enabling independent sitting. At two hundred days, the metacarpal bones develop, enabling crawling. At three hundred days, the patella develops, enabling standing independently. At three hundred and sixty days, the knee bones develop, enabling walking. The wet nurse must constantly guide and teach the infant according to the seasons and developmental stages, continuously assisting them to master these skills. This is the established method. One must not hold the infant constantly without providing guidance or practice at appropriate times, which would lead to flaccid and drooping muscles and bones, and potentially result in disorders of the waist and legs.