《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：对于男婴，使用父亲穿过的旧棉絮做衣服；对于女婴，使用母亲穿过的旧衣。不要使用新绵，千万不可让衣物过厚，恐怕会导致婴儿壮热，引发疮疡和惊痫，这些病症都由此开始。巢元方说：婴儿刚出生时，肌肤尚未发育完善，不能穿暖衣，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。婴儿如果经常藏在帷帐之内，穿着多层衣物保暖，就像阴地里的草木，不见风日，变得软脆，无法抵御风寒。所有婴儿都应当用旧棉絮做衣服，不要用新绵。在天气暖和无风的时候，让母亲抱着孩子在阳光下嬉戏，多次接触风日，就能使血液凝练、气机刚强，肌肉坚实致密，能够耐受风寒，不导致疾病。婴儿还应当练习穿薄衣的方法，应当从秋天开始练习，不能在春夏季节突然减少衣物，否则会让婴儿中风寒。婴儿在冬季只应当穿夹衣或纳衣之类的衣物，极冷时才逐渐添加旧绵。许多家庭疼爱孩子，反而让棉衣过厚，这恰恰是有害的。此外，还要观察调节，不要让婴儿出汗，出汗会导致虚损，从而遭受风寒侵袭，无论是白天还是夜晚，清醒还是睡眠，都要对此加以戒除。新生儿满月后，必须使用襁褓包裹。使用襁褓的方法必须得当，如在春夏月份，这是万物生长的时节，适宜教导让孩子在地上躺卧，使之不违背生长之气；如在秋冬月份，这是万物收藏的时节，适宜让孩子处于温暖之处，使之不违背收藏之气。这样之后，血液凝练、气机调和，各种疾病就无从入侵了。朱丹溪说：人在十六岁以前，血气都很旺盛，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物，这是前人留下的格言，众所周知。裳，是下体的服饰；帛，比布温暖得多；裘，是皮服，比帛更温软。因为下体主阴，得到寒凉则阴气易长，得到温暖则阴气易消，所以下体不穿用绵绢夹层加厚温暖的衣物，恐怕会妨碍阴气，这确实是确切的论断。
The *Qianjin Fang* (Essential Prescriptions Worth a Thousand Gold) states: For male infants, use old cotton wadding from clothes worn by the father; for female infants, use old clothes worn by the mother. Do not use new cotton wadding, and absolutely avoid making the clothing too thick, as this may cause intense heat in the infant, leading to sores (*chuang yang*) and convulsions (*jing xian*), all of which originate from this practice. Chao Yuanfang stated: When an infant is first born, the skin and muscles are not yet fully formed. One should not dress the infant too warmly, as this will cause the sinews and bones to become lax and weak. The infant should be exposed to wind and sunlight frequently. If completely shielded from wind and sun, the skin and muscles will become brittle and soft, making them susceptible to injury. If infants are kept hidden within curtains, wrapped in heavy layers of warm clothing, it is like plants growing in the shade without exposure to wind or sun, becoming soft and fragile, unable to withstand wind and cold. All infants should wear clothes made of old cotton wadding, not new cotton. During times when the weather is warm and windless, the mother should hold the infant and play with them in the sunlight. Frequent exposure to wind and sun will make the blood refined and the Qi firm, causing the muscles to become dense and tough, enabling the infant to endure wind and cold and preventing disease. Infants should also be trained in wearing thin clothing, starting from autumn. One should not suddenly reduce their clothing in spring and summer, as this will expose the infant to wind and cold. In winter, infants should only wear lined garments or padded quilts (*na yi*). Only in extreme cold should old cotton wadding be gradually added. Many families, out of love for their children, overdress them in thick cotton, which is actually harmful. Furthermore, one must monitor the infant to prevent sweating. Sweating leads to deficiency and damage, making the infant vulnerable to wind and cold. This must be guarded against day and night, whether awake or asleep. After the newborn reaches one month of age, they must be swaddled. 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, aligning with the energy of growth. In autumn and winter, when all things are storing, it is suitable to keep the infant in warm places, aligning with the energy of storage. In this way, the blood becomes refined and the Qi harmonious, and various diseases will have no entry. Zhu Danxi said: Before the age of sixteen, human blood and Qi are abundant, like the rising sun or the nearly full moon. However, Yin is often insufficient. The method of nurturing requires great caution. It is a well-known ancient maxim that young boys should not wear fur robes or silk garments. "Chang" refers to lower-body garments; "Bo" (silk) is warmer than cloth; "Qiu" (fur) is softer and warmer than silk. Since the lower body governs Yin, exposure to coolness promotes the growth of Yin, while warmth causes Yin to decline. Therefore, avoiding thick, warm garments made of cotton or silk for the lower body prevents hindrance to Yin Qi. This is indeed a sound conclusion.