便产须知云∶不利嗣息，动必成灾。虽邻家自家，修造动土，犯其胎气，令子破形
损命。刀犯者形必伤，泥犯者窍必壅，打击者色青黯，系缚者相拘挛等说，此为术者妄
言，百无一验，必不可信，惟修造兴工，下椿动土，皆非娠妇所宜见，谨避之可也。
乾坤秘窍云∶古人有转女为男之法。夫男女媾精，阳胜成男，阴胜成女，气以成形，
岂有法焉？可以人力转变之哉？其法于始觉有娠之时，以斧仰置孕妇床下，弗令知之，则
生男。又为之说曰∶如不信，待鸡抱卵时，置斧窠中，则一窠尽雄。又法取弓弩弦缚孕妇
腰下，满百日去之。又法三月以前，或取雄鸡尾尖上长毛三茎，或取夫发及手足甲，潜
安妇人卧席下，弗令知之。又法带雄黄袋，或佩宜男草。是琐琐者，岂竟能夺造化之功哉？
此难凭信者也。然而术不足信，理有可凭，转女为男，实有良法。人能方寸之地，刻刻栽
培，积功累行，则阳长阴消，阴从阳化，不弄瓦而弄璋，有断断然者，则人定可胜天，特
恐人之不能自蓄其德耳。
鸡肉合糯米食，令子生寸白虫。
食犬肉，令子无声。
鲤同鸡子食，令子生疳多疮。
兔肉食之，令子缺唇。
羊肝，令子多厄难。
鳖肉，令子短颈。
鸭子与桑堪同食，令子倒生心寒。
鳝鱼同田鸡食，令子喑哑。
雀肉合豆酱同食，令子面生雀斑黑子。
食螃蟹，横生。
食子姜，令子多指生疮。
食水浆，冷绝产。
食雀肉饮酒，令子多淫无耻。
食茨菰，消胎气。
干姜蒜鸡，毒胎无益。
粘腻难化，伤胎。
食山羊肉，子多病。
无鳞鱼勿食。
菌有大毒，食之令子风而夭。
食雀脑，令子雀目。
《便产须知》中说：不利于子嗣繁衍，一旦动工必成灾祸。即使是邻居家或自家修造动土，触犯了孕妇的胎气，会导致胎儿形体破损、损伤性命。被刀斧所犯者，胎儿形体必定受伤；被泥土所犯者，胎儿七窍必定闭塞；被打击声所犯者，胎儿面色青暗；被系缚声所犯者，胎儿相貌拘挛等说法，这些都是术士的妄言，百次中无一验证，绝对不可相信。只有修造开工，打下木桩动土，这些景象都不宜让孕妇看见，谨慎避开即可。
《乾坤秘窍》中说：古人有将女孩转为男孩的方法。男女交合精气，阳气胜则生男，阴气胜则生女，气凝聚而成形，哪里有什么方法，可以通过人力来转变呢？其方法是：在刚刚察觉怀孕时，把斧头倒置放在孕妇床下，不让孕妇知道，就会生男孩。又有一种说法：如果不信，等到母鸡抱窝孵蛋时，把斧头放入鸡窝中，那么一窝孵出的全是雄鸡。另一种方法是：用弓弩弦绑在孕妇腰下，满一百天后去掉。还有一种方法：怀孕三个月以前，或者取雄鸡尾尖上长毛三根，或者取丈夫的头发及手足指甲，偷偷安放在妇女卧席之下，不让孕妇知道。又一种方法是：佩戴雄黄袋，或者佩戴宜男草（菖蒲）。这些琐碎的事情，难道竟然能夺取造化的功效吗？这些是难以凭信的说法。然而，术数虽然不足信，道理却有可凭之处，转女为男，确实有良法。人能在方寸之心之地，时时刻刻修养品德，积累功德善行，那么阳气增长阴气消退，阴气顺从阳气转化，不玩泥瓦（指生女）而玩玉璋（指生男），这是确凿无疑的。那么人的努力完全可以胜过天命，只怕人们不能自我蓄养德行罢了。
吃鸡肉配合糯米食用，会使孩子出生后患寸白虫（绦虫病）。
吃狗肉，会使孩子失声。
鲤鱼同鸡蛋一起食用，会使孩子患疳积且多疮疡。
吃兔肉，会使孩子唇裂。
吃羊肝，会使孩子多遭遇厄难。
吃鳖肉，会使孩子脖子短。
鸭子与桑葚同食，会使孩子胎位不正（倒生）且心寒。
鳝鱼同田鸡（青蛙）一起食用，会使孩子哑巴。
雀肉合豆酱一起食用，会使孩子脸上生出雀斑黑痣。
吃螃蟹，会导致难产（横生）。
吃子姜，会使孩子手指多且生疮。
喝生水（冷浆），会导致绝育不孕。
吃雀肉饮酒，会使孩子淫乱无耻。
吃茨菰，会消损胎气。
干姜、蒜、鸡，有毒害胎之弊而无益处。
粘腻难消化的食物，会伤胎。
吃山羊肉，孩子多病。
无鳞鱼不要吃。
菌类有大毒，吃了会使孩子患风病夭折。
吃雀脑，会使孩子患雀目（夜盲症）。
The *Bian Chan Xu Zhi* (Necessary Knowledge for Childbirth) states: It is unfavorable for offspring; any disturbance will inevitably bring disaster. Whether it is construction or digging earth at a neighbor's house or one's own home, if it offends the maternal qi and affects the fetus, it may cause deformity or death to the child. Claims that being offended by knives or axes causes physical injury, by mud causes blockage of the orifices, by striking sounds causes dark complexion, or by binding sounds causes contracture of features, are all baseless words of charlatans. There is not one case in a hundred that verifies these claims, so they must not be believed. However, when construction begins and piles are driven into the ground, such scenes should not be seen by pregnant women; it is sufficient to avoid them carefully.
The *Qiankun Mi Qiao* (Secrets of Heaven and Earth) states: The ancients had methods to change a female fetus into a male. When man and woman join their essence, yang predominance results in a male, and yin predominance results in a female; qi condenses to form the body. How could there be a method to alter this through human effort? One method is: at the moment pregnancy is first detected, place an axe upside down under the pregnant woman's bed without her knowing, which will result in a boy. Another explanation says: If you do not believe this, wait until a hen is brooding eggs, place an axe in the nest, and the entire clutch will hatch as males. Another method is to tie a bowstring around the pregnant woman's waist and remove it after 100 days. Another method, before the third month of pregnancy, is to take three long tail feathers from a rooster, or the husband's hair and fingernails/toenails, and secretly place them under the woman's sleeping mat without her knowledge. Another method is to wear a bag containing realgar (Xionghuang), or carry Yinan Cao (Acorus tatarinowii). Can such trivial matters truly usurp the work of creation? These are hard to believe. However, while these techniques are unreliable, the principles have credibility. To change a female fetus into a male, there are indeed effective methods. If a person can cultivate virtue in the square inch of the heart, constantly nurturing it, accumulating merit and good deeds, then yang grows and yin diminishes, and yin transforms according to yang. Instead of playing with tiles (symbolizing girls), one plays with jade zhang (symbolizing boys); this is certain. Thus, human effort can surpass destiny, provided people can accumulate virtue themselves.
Eating chicken meat combined with glutinous rice causes the child to develop tapeworm infection (Cunbai Chong) after birth.
Eating dog meat causes the child to lose their voice.
Eating carp together with eggs causes the child to develop malnutrition (Gan syndrome) and numerous sores.
Eating rabbit meat causes cleft lip in the child.
Eating sheep liver causes the child to suffer many misfortunes.
Eating turtle meat causes the child to have a short neck.
Eating duck meat together with mulberries causes breech presentation and coldness of the heart in the child.
Eating eel together with frog meat causes the child to be mute.
Eating sparrow meat combined with bean paste causes freckles and black moles on the child's face.
Eating crab meat leads to difficult labor (transverse lie).
Eating young ginger causes polydactyly and sores on the child's fingers.
Drinking cold water causes infertility.
Eating sparrow meat and drinking alcohol causes the child to be licentious and shameless.
Eating colocasia (茨菰) dissipates fetal qi.
Dried ginger, garlic, and chicken are toxic to the fetus and offer no benefit.
Sticky and indigestible foods damage the fetus.
Eating goat meat causes the child to be prone to illness.
Scaleless fish should not be eaten.
Mushrooms contain severe toxins; eating them causes the child to suffer from wind diseases and die young.
Eating sparrow brains causes night blindness (Que Mu) in the child.