《千金》论云∶小儿，用父故絮着衣，女用母故衣，勿使新绵，切不可过浓，恐
令儿壮热，生疮发痫，皆自此始。巢氏云∶儿始生，肌肤未成，不可暖
衣，则令筋骨缓弱，宜时见风日，若都不见风日，则令肌肤脆软，便易伤损。婴儿若常
藏在帏幕之内，重衣温暖，譬如阴地草木，不见风日，软脆不任风寒。婴儿皆当以
故絮着衣，莫用新绵也。天气和暖无风之时，令母将抱日中嬉戏，数见风日，则令
血凝气刚，肌肉硬密，堪耐风寒，不致疾病。婴儿又当习薄衣之法，当从秋习之，
不可以春夏卒减其衣，则令儿中风寒。婴儿冬月但当着夹衣及衲衣之类，极寒即渐
加以旧绵，人家多爱子，乃以绵衣过浓，适所以为害也。已婴儿又当消息无令汗出，
汗出则致虚损，便受风寒，昼夜寤寐，皆当戒之。初生儿出月，必须人襁褓，襁褓
之道，必须得宜，如春夏之月，乃万物生长之时，宜教令地卧，使之不逆生长之气，
如秋冬之月，乃万物收藏之时，宜就温暖之处，使之不逆收藏之气，然后血凝气和，
则百病无自而入矣。丹溪曰∶人生十六岁以前，血气俱盛，如日方升，如月将圆，
惟阴常不足，养之之道，不可不谨。童子不衣裘帛，煎哲格言具在人耳，裳、下体
之服，帛，温暖甚于布者也，裘皮服，温软甚于帛者也，盖下体主阴，得寒凉则阴
易长，得温暖则阴暗消，是以下体不与绵绢夹浓温暖之服，恐妨阴气，实为确论。
《千金方》论述说：小儿穿衣，男婴用父亲穿过的旧棉絮做衣服，女婴用母亲穿过的旧衣，不要使用新绵，千万不可过厚，恐怕导致孩子壮热，生疮、发癫痫，都从此开始。巢元方说：婴儿刚出生时，肌肤尚未长成，不可穿暖衣，否则会使筋骨松弛软弱，应当时常接触风和阳光，如果完全不见风日，就会使肌肤脆软，容易受到损伤。婴儿如果常藏在帷帐之内，穿着多层衣物保暖，就像阴地里的草木，不见风日，变得软脆，不能抵御风寒。婴儿都应当用旧棉絮做衣服，不要用新绵。天气和暖无风的时候，让母亲抱着孩子在阳光下嬉戏，多次见到风日，就能使血液凝练、气机刚强，肌肉坚实致密，能够耐受风寒，不致生病。婴儿又应当练习穿薄衣的方法，应当从秋天开始练习，不可以春夏突然减少孩子的衣物，否则会使孩子中风寒。婴儿冬天只应当穿夹衣和纳衣之类的衣服，极冷时才逐渐加上旧绵，人们大多疼爱孩子，反而因为棉衣过厚，恰好造成危害。婴儿还应当注意调节，不要让出汗，出汗则会导致虚损，从而受风寒，白天黑夜醒着或睡着时，都应当戒除这一点。初生儿满月后，必须入襁褓，襁褓之道，必须得当，如春夏之月，是万物生长的时节，应当教导让孩子在地上躺卧，使之不违背生长之气；如秋冬之月，是万物收藏的时节，应当让孩子在温暖的地方，使之不违背收藏之气，然后血凝气和，百病就无从入侵了。朱丹溪说：人十六岁以前，血气俱盛，像太阳刚刚升起，像月亮即将圆满，只有阴气常常不足，养育之道，不可不谨慎。童子不穿皮裘和丝绸衣服，这是前代哲人的格言，众所周知，裳是下体的衣服，丝绸比布温暖得多，皮裘比丝绸温软得多，大概下体主阴，得到寒凉则阴气易长，得到温暖则阴气暗消，所以下体不穿绵绢夹层厚暖的衣服，恐怕妨碍阴气，确实是确切的论断。
The *Qianjin Fang* (Essential Prescriptions Worth a Thousand Gold) states: For infants, male babies should wear clothes padded with the father's old cotton wadding, and female babies should wear the mother's old clothes. Do not use new cotton; it must absolutely not be too thick, lest it cause high fever, sores, or epilepsy in the child, all of which may originate from this. Chao Yuanfang stated: When an infant is first born, the skin and muscles are not yet fully formed. One should not dress them warmly, as this will lead to laxity and weakness of the tendons and bones. It is advisable to expose them frequently to wind and sunlight. If they never see wind or sun, their skin and flesh will become fragile and soft, making them susceptible to injury. If infants are always kept within curtains, wrapped in heavy layers for warmth, it is like plants growing in the shade without wind or sun—becoming soft and brittle, unable to withstand wind and cold. Infants should all wear clothes padded with old wadding, not new cotton. When the weather is mild and windless, let the mother hold the child and play in the sunlight. Frequent exposure to wind and sun will make the blood refined and the Qi firm, the muscles solid and dense, enabling tolerance of wind and cold and preventing disease. Infants should also practice wearing thin clothing, starting from autumn. One should not suddenly reduce their clothing in spring and summer, as this will cause them to contract wind-cold. In winter, infants should only wear quilted jackets or stitched garments. Only in extreme cold should old cotton be gradually added. Families often love their children dearly but harm them by using overly thick cotton padding. Care should be taken to regulate the infant so that they do not sweat; sweating leads to deficiency and damage, making one susceptible to wind-cold. This must be guarded against both day and night, whether awake or asleep. After the first month, newborns must be placed in swaddling cloths. The method of swaddling must be appropriate. In spring and summer, when all things are growing, it is suitable to teach the infant to lie on the ground, so as not to go against the Qi of growth. In autumn and winter, when all things are storing, it is suitable to keep them in warm places, so as not to go against the Qi of storage. Then the blood will be refined and the Qi harmonious, and diseases will have no entry. Zhu Danxi said: Before the age of sixteen, a person's Blood and Qi are abundant, like the sun just rising or the moon about to be full. However, Yin is constantly insufficient. The way to nurture them must be cautious. Boys should not wear fur or silk garments. This is a well-known maxim of ancient sages. Chang (lower garment) refers to clothing for the lower body; silk is much warmer than cloth, and fur is warmer and softer than silk. Generally, the lower body governs Yin. Exposure to coolness allows Yin to grow easily, while warmth causes Yin to diminish secretly. Therefore, avoiding thick, warm clothing made of cotton or silk for the lower body, lest it hinder Yin Qi, is indeed a sound argument.