凡看婴儿，先明四时。既有变蒸之状，还有强弱之推。寒热初来，慎一七而方退；周期未满，当四八以重期。原夫
魂魄将营，筋骨始成，开舒腠理，通彻奇经。运用而阴阳以正；往来气血初平，顿觉精神，喜笑嘤嘤，有异未知变蒸，
仔细一一须明。肝者干也，东方所属为木，象之三数，发形证于两目。浑身壮热，令瞳子以无辉；彻夜惊啼，因神魂而
未足。四数于金，二由在火。咳嗽频频，汗珠颗颗。两日间喷涕仍加，数夜虚惊。又可暗增骨髓，学反复以翻身；渐长
性情，畏傍人而恋母。脾土五呼，肾水一称。谷气暗引，精志时增。乳哺甘甜，尻骨成而独坐戏；经络流利，掌骨具而
匍匐能。次后筋骨之少更；膝踝之渐硬。气血乃荣于四肢；光彩而盎于满面。停停立犹未稳，喽喽语尚声颤。手足受血，
移步行而堪怜；耳目精通，意智生而可羡。斯乃呼息稍匀，肌体乃浓。两气而外阳内阴；一气而入鼻退场门。期来应节，
自然脏腑充盈，将养乖宜，感受寒邪，甚有于是发竖无润，乳哺吐呕，珠起丹唇；冷侵 骨，内肠鸣而微利，或惊啼而
勿喜。经云∶蒸则蒸气血之坚，变则变形容之正矣。
三十二日，一变生癸，肾脏生焉。 属足少阴经。
六十四日，二蒸生壬，膀胱腑气生焉。 属足太阳经。
九十六日，三变生丁，心脏气生焉。 属手少阴经。
一百二十八日，四蒸生丙，小肠腑气生焉。 属手太阳经。
一百六十日，五变生乙，肝脏气生焉。 属足厥阴经。
一百九十二日，六蒸生甲，胆腑气生焉。 属足少阳经。
二百二十四日，七变生辛，肺脏气生焉。 属手太阴经。
二百五十六日，八蒸生庚，大肠腑气生焉。 属手阳明经。
二百八十八日，九变生己，脾脏气生焉。 属足太阴经。
三百二十日，十变五蒸生戊，胃腑气生焉。 属足阳明经。
心胞络脏三焦腑，此脏腑俱无形，故不变亦不蒸焉。
十变五蒸讫后，又三大蒸，计六十日一蒸。
三百八十四日为一大蒸，四百四十八日为二大蒸，五百七十六日为三大蒸。
共五百七十六日，变蒸俱毕，儿乃成人。所谓变者，变生五脏也；蒸者，蒸养六腑也。变蒸全，血脉方荣，骨节方
长，情性方异于前也。凡当变蒸之时，先看儿上唇尖有水泡微肿即斯候也。切不可药攻火炙伤儿。慎之！慎之！
凡是观察婴儿，首先要明确四季的变化规律。既然存在变蒸（婴幼儿生长发育过程中的一种生理现象）的征象，还需要推断其体质的强弱。寒热症状初起时，需谨慎对待，通常在一七（七日）左右才会消退；如果周期未满，应当以四八（三十二日）为一个重要的观察节点。
追溯其本源，魂魄开始滋养，筋骨逐渐形成，腠理（皮肤纹理及汗孔）开疏，奇经八脉通畅。阴阳得以调和端正；气血往来初步平稳，精神面貌顿然改观，喜欢嬉笑发出嘤嘤之声，这与尚未经历变蒸时的状态截然不同，需要仔细逐一辨明。肝在五行中属木，对应东方，其数为三，病变常表现在双目。若全身壮热，会导致瞳孔失去光泽；彻夜惊啼，是因为神魂尚未充足。肺属金，其数为四；心属火，其数为二。出现频频咳嗽，汗珠颗颗落下。两日间喷嚏增多，数夜受虚惊。此后骨髓暗中增长，学会反复翻身；性情逐渐成长，畏惧旁人而依恋母亲。脾属土，其数为五；肾属水，其数为一。谷气暗中引导，精气神志时时增加。乳汁喂养甘甜，尻骨长成从而能独自坐立玩耍；经络流利，掌骨具备从而能匍匐爬行。随后筋骨略有更替；膝踝关节逐渐变硬。气血于是充盈于四肢；光彩洋溢于满面。站立尚且不稳，说话声音还带有颤抖。手足得到血液濡养，移动行走令人怜爱；耳目灵敏精通，意智产生令人羡慕。至此呼吸稍微均匀，肌体变得丰满。阳气在外，阴气在内；一气从鼻吸入，从肛门排出。到了应验的时节，脏腑自然充盈；若调养不当，感受寒邪，甚至会出现毛发竖起干枯无润泽，哺乳呕吐，嘴唇红肿起泡；寒气侵入骨骼，肠鸣微泻，或者惊啼而不喜悦。医经说：“蒸”是蒸炼气血使之坚固，“变”是改变容貌使之端正。
三十二日，第一次“变”产生癸水，肾脏之气由此生成。属于足少阴经。
六十四日，第一次“蒸”产生壬水，膀胱腑气由此生成。属于足太阳经。
九十六日，第二次“变”产生丁火，心脏之气由此生成。属于手少阴经。
一百二十八日，第二次“蒸”产生丙火，小肠腑气由此生成。属于手太阳经。
一百六十日，第三次“变”产生乙木，肝脏之气由此生成。属于足厥阴经。
一百九十二日，第三次“蒸”产生甲木，胆腑气由此生成。属于足少阳经。
二百二十四日，第四次“变”产生辛金，肺脏之气由此生成。属于手太阴经。
二百五十六日，第四次“蒸”产生庚金，大肠腑气由此生成。属于手阳明经。
二百八十八日，第五次“变”产生己土，脾脏之气由此生成。属于足太阴经。
三百二十日，第六次“变”和第五次“蒸”同时产生戊土，胃腑气由此生成。属于足阳明经。
心包络脏和三焦腑，这两个脏腑都没有具体的形态，所以既不“变”也不“蒸”。
十变五蒸结束后，又有三次大蒸，每次间隔六十日进行一次大蒸。
三百八十四日为第一次大蒸，四百四十八日为第二次大蒸，五百七十六日为第三次大蒸。
共计五百七十六日，变蒸全部结束，婴儿才算是成人。所谓的“变”，是指变化生成五脏；所谓的“蒸”，是指蒸养六腑。变蒸完成，血脉方才荣润，骨节方才生长，性情方才与之前不同。凡是在变蒸的时候，先看婴儿上唇尖是否有水泡微肿，这就是变蒸的征候。切不可用药攻伐或火灸伤害婴儿。务必谨慎！务必谨慎！
When examining infants, one must first understand the changes of the four seasons. Given the manifestations of Bianzheng (a physiological process of growth and development in infants), it is also necessary to deduce their physical strength or weakness. When symptoms of cold and heat initially appear, caution is required; they typically subside after one cycle of seven days (Yi Qi). If the cycle has not yet expired, one should re-evaluate at the period of four times eight days (San Shi Er Ri).
Tracing back to the origin, Hun and Po (spiritual aspects) begin to nourish, sinews and bones start to form, Couli (pores and skin texture) open up, and the Eight Extraordinary Vessels become unobstructed. Yin and Yang are regulated and corrected; as Qi and Blood circulate and initially stabilize, there is a sudden improvement in spirit, with the infant showing joy, laughing and making humming sounds. This differs significantly from the state before Bianzheng, requiring careful and detailed differentiation. The Liver corresponds to Wood in the East, with the number three; pathological signs often manifest in the eyes. Generalized high fever causes the pupils to lose luster; all-night crying due to fright occurs because Hun and Shen are not yet sufficient. The Lungs correspond to Metal, with the number four; the Heart corresponds to Fire, with the number two. Frequent coughing and droplets of sweat appear. Sneezing increases over two days, and false fright occurs over several nights. Subsequently, bone marrow secretly grows, and the infant learns to turn over repeatedly; temperament gradually develops, becoming wary of strangers and clinging to the mother. Spleen corresponds to Earth, with the number five; Kidneys correspond to Water, with the number one. Gu Qi (Grain Qi) secretly guides, and Jing Zhi (Essence and Will) increase from time to time. Sweet breast milk nourishes; the sacrum forms, allowing independent sitting and play; meridians become smooth, and metacarpal bones develop, enabling crawling. Later, sinews and bones undergo slight renewal; knees and ankles gradually harden. Qi and Blood then flourish in the four limbs; radiance fills the face. Standing remains unstable, and speech is still trembling. Hands and feet receive blood nourishment, making movement endearing; ears and eyes become acute, and intelligence emerges, which is admirable. At this stage, breathing becomes slightly regular, and the body becomes plump. Yang Qi is external, Yin Qi is internal; one Qi enters through the nose and exits through the anus. When the appropriate time arrives, Zang-Fu organs naturally fill up. If care is improper and Cold Evil invades, hair may stand erect and dry without moisture, breastfeeding may lead to vomiting, and red blisters may appear on the lips; Cold invading the bones may cause intestinal rumbling and mild diarrhea, or frightful crying without joy. The Classics state: "Zheng" steams and solidifies Qi and Blood; "Bian" transforms and corrects appearance.
At thirty-two days, the first "Bian" generates Gui Water, and Kidney Qi arises. It belongs to the Foot Shaoyin Meridian.
At sixty-four days, the first "Zheng" generates Ren Water, and Bladder Fu Qi arises. It belongs to the Foot Taiyang Meridian.
At ninety-six days, the second "Bian" generates Ding Fire, and Heart Qi arises. It belongs to the Hand Shaoyin Meridian.
At one hundred twenty-eight days, the second "Zheng" generates Bing Fire, and Small Intestine Fu Qi arises. It belongs to the Hand Taiyang Meridian.
At one hundred sixty days, the third "Bian" generates Yi Wood, and Liver Qi arises. It belongs to the Foot Jueyin Meridian.
At one hundred ninety-two days, the third "Zheng" generates Jia Wood, and Gallbladder Fu Qi arises. It belongs to the Foot Shaoyang Meridian.
At two hundred twenty-four days, the fourth "Bian" generates Xin Metal, and Lung Qi arises. It belongs to the Hand Taiyin Meridian.
At two hundred fifty-six days, the fourth "Zheng" generates Geng Metal, and Large Intestine Fu Qi arises. It belongs to the Hand Yangming Meridian.
At two hundred eighty-eight days, the fifth "Bian" generates Ji Earth, and Spleen Qi arises. It belongs to the Foot Taiyin Meridian.
At three hundred twenty days, the sixth "Bian" and fifth "Zheng" simultaneously generate Wu Earth, and Stomach Fu Qi arises. It belongs to the Foot Yangming Meridian.
The Pericardium Zang and Sanjiao Fu have no specific form; therefore, they do not undergo "Bian" nor "Zheng".
After the ten Bians and five Zhengs are completed, there are three major Zhengs, each occurring every sixty days.
Three hundred eighty-four days marks the first Major Zheng.
Four hundred forty-eight days marks the second Major Zheng.
Five hundred seventy-six days marks the third Major Zheng.
In total, five hundred seventy-six days pass until all Bianzheng processes are complete, and the child is considered an adult. What is called "Bian" refers to the transformation and generation of the Five Zang Organs; what is called "Zheng" refers to the steaming and nourishment of the Six Fu Organs. Once Bianzheng is complete, blood vessels become flourishing, joints grow, and temperament differs from before. During any Bianzheng period, first check if there are small blisters or slight swelling at the tip of the infant's upper lip; this is the sign of Bianzheng. One must absolutely avoid using harsh medications or moxibustion that could harm the infant. Be cautious! Be cautious!