小儿初生，饮食未动，胃气未开，廓然清虚之府，宜乘此时加意调燮。小儿未啼之时，令精巧妇人用指轻
轻探儿口，挖去污血。急以甘草汤，用软帛裹指蘸汤，拭去口中涎沫。然后看儿面色，若身面俱红，而唇舌紫者，
知其必有胎毒。每日用盐
茶，但不可太咸，以帛蘸洗其口，去其粘涎，每日须五六次。此法至神至圣，世所不知。盖儿之胎毒，藏于脾
胃，口中多有粘涎，其马牙鹅口，重舌木舌，皆从此起。每日洗拭，则毒随涎去，病从何来，而且至简至易，何
忽视而不为。倘胎毒重，直须过周岁，方得用此法，有胎毒者之调燮也。盖周岁后，头面满起红粒或带白尖，始
能发现于外表。倘儿面唇淡红，此为胎寒，惟以淡姜汤洗拭，每日一二次足矣。盖姜能开胃而且和中，最利于实
用者。至于古方之用黄连、大黄、朱砂、轻粉开口之法，此时断不可用。今时禀受十有九虚，若寒克削最不相
宜。况婴儿初诞，如蛰虫出户，草木萌芽，卒遇寒雪严霜，未有不为其摧折。以苦寒而入初诞儿之口，亦若是也。
每见三朝七日，必有腹痛呕乳，液泻夜啼之证，是皆苦寒伤胃之害，其孰能知之。或曰∶子言苦寒不可用于初诞
儿之口，何以后之沆瀣丹及泻青丸，有三黄大黄，得无矛盾乎？曰彼胎毒已现，外证可凭，有病病当，何大黄之
足畏。今初诞开口，未辨毒之有无，即使有毒，尚然未发，深藏潜伏，声臭俱泯。程凤雏有言∶安辑闾阎，必诛
冠盗，未可抉平人而诛之，日尔将为寇也。以苦寒而开口，是诛平人也。毒发而畏寒，是有寇不诛，乡原之仁，
乌乎可也。
小儿刚出生时，尚未进食，胃气尚未开启，身体如同空旷清虚的府库，应当趁此时机用心调理。在小儿啼哭之前，让灵巧的妇女用手指轻轻探入婴儿口中，挖出污血。随即用甘草汤，用软布包裹手指蘸取药汤，擦拭去除口中的涎沫。然后观察婴儿的面色，如果全身和面部都发红，但嘴唇和舌头呈紫色，就知道必然有胎毒。每天用淡盐水茶（盐茶），注意不要太咸，用布蘸水清洗婴儿口腔，去除粘腻的涎液，每天需要清洗五六次。这种方法极其灵验神圣，世人却不知晓。因为婴儿的胎毒，藏匿于脾胃之中，口中多有粘涎，那些马牙、鹅口疮、重舌、木舌等病症，都是从这里引发的。每天清洗擦拭，毒素就会随着涎液排出，疾病从何而来呢？而且方法极其简单容易，为何忽视而不施行呢？如果胎毒严重，必须等到满周岁以后，才能使用这种方法，这是针对有胎毒婴儿的调理。因为周岁之后，头面部才会长出红粒或带有白尖的皮疹，从而显露于外表。如果婴儿面色和嘴唇淡红，这属于胎寒，只用淡姜汤清洗擦拭即可，每天一两次就足够了。因为生姜能开胃且调和脾胃，是最利于实用的。至于古方中使用黄连、大黄、朱砂、轻粉来“开口”的方法，此时绝对不可使用。当今时代出生的婴儿，十之八九体质虚弱，如果用寒凉药物克削攻伐，最不相宜。况且婴儿初生，就像冬眠的虫子爬出洞穴，草木刚刚萌芽，突然遇到寒冷的雪霜，没有不被摧折的。用苦寒药物进入初生婴儿的口中，也是同样的道理。我常见到婴儿在出生后第三日或第七日，必定出现腹痛、呕吐乳汁、泄泻、夜间啼哭等症状，这都是苦寒药物损伤胃气的危害，谁能知道其中的道理呢？有人问：你说苦寒不可用于初生婴儿的口中，为什么后来的沆瀣丹及泻青丸中，含有三黄和大黄，这不是自相矛盾吗？我说：那时胎毒已经显现，外在症状可以作为依据，有病治病，有什么可畏惧大黄的？如今初生婴儿“开口”，尚未辨别是否有毒，即使有毒，也尚未发作，深藏潜伏，无声无息。程凤雏曾说：安抚百姓，必须诛杀强盗，不能平白无故地诛杀普通人，说他们将来会成为强盗。用苦寒药物进行“开口”，就是诛杀无辜的人。毒邪发作时才畏惧使用寒凉药物，是有贼寇却不诛杀，这种老好人式的仁慈，怎么可以呢？
When a newborn infant has not yet begun to eat and the stomach qi (Stomach Qi) has not yet opened, the body remains an empty and clear void. It is advisable to pay special attention to regulation and care at this time. Before the infant cries, have a skilled woman gently probe the infant's mouth with her finger to remove foul blood. Immediately use Licorice Decoction (Gancao Tang), wrapping a finger in soft cloth, dipping it into the decoction, and wiping away the saliva from the mouth. Then observe the infant's complexion. If the body and face are both red, but the lips and tongue are purple, one can know that there must be fetal toxin (Tai Du). Every day, use salt tea (Yan Cha), ensuring it is not too salty, dip a cloth in it to wash the mouth, removing sticky saliva. This should be done five or six times daily. This method is extremely effective and sacred, yet unknown to the world. The reason is that the infant's fetal toxin resides in the Spleen and Stomach, and there is much sticky saliva in the mouth. Conditions such as horse teeth (Ma Ya), goose mouth (E Kou), double tongue (Chong She), and wooden tongue (Mu She) all originate from this. Daily washing and wiping allow the toxin to leave with the saliva; how could illness arise? Moreover, the method is extremely simple and easy, so why neglect it and fail to practice it? If the fetal toxin is severe, this method must be delayed until after the first year of age; this is the regulation for infants with fetal toxin. This is because after one year of age, red bumps or those with white tips will appear on the head and face, manifesting externally. If the infant's face and lips are pale red, this indicates fetal cold (Tai Han). In this case, only wash and wipe with mild ginger soup (Dan Jiang Tang), once or twice a day is sufficient. Ginger can open the appetite and harmonize the middle jiao (Middle Burner), making it most practical for use. As for ancient formulas using Coptis Rhizome (Huanglian), Rhubarb (Dahuang), Cinnabar (Zhusha), and Calomel (Qingfen) for "opening the mouth," these methods must absolutely not be used at this time. Infants born today are deficient in constitution nine out of ten times. Using cold and purgative methods to attack and weaken them is highly inappropriate. Furthermore, a newborn infant is like a hibernating insect emerging from its hole or grass and trees just sprouting; suddenly encountering cold snow and frost, they would inevitably be crushed and broken. Introducing bitter-cold substances into the mouth of a newly born infant is exactly the same. I often see that on the third or seventh day after birth, infants inevitably exhibit symptoms of abdominal pain, vomiting milk, watery diarrhea, and night crying. These are all harms caused by bitter-cold substances damaging the stomach qi. Who understands this? Some might say: You state that bitter-cold substances cannot be used in the mouths of newborns, yet later formulas such as Hangxie Dan and Xieqing Wan contain Sanhuang (Three Yellows) and Dahuang. Is this not contradictory? I reply: By then, the fetal toxin has already manifested, and external signs provide evidence. When there is disease, treat the disease; why fear Dahuang? Now, when "opening the mouth" of a newborn, we have not yet determined the presence or absence of toxin. Even if there is toxin, it has not yet erupted; it lies deep and hidden, silent and invisible. Cheng Fengchu said: To pacify the neighborhoods, one must execute bandits; one cannot execute innocent people on the grounds that they might become bandits in the future. Using bitter-cold substances to "open the mouth" is executing innocent people. Fearing cold substances only when the toxin erupts is failing to punish bandits when they exist; this kind of benevolence of a hypocrite (Xiang Yuan) is unacceptable.