汉东王先生《家宝》论五脏相生刑克∶
肝属东方木，木生火，金能克之，旺在春三个月，能克于土，见秋而衰。以脾为妇，木为阳。脾为阴也。
心属南方火，火生土，水能克之，旺在夏三个月，能克于金，见冬而衰。脾为中宫土，土生金，木能克之，旺
在四季月，四立前后各十八日，能克于水。三月、六月、九月、十二月亦是旺也。肺属西方金，金生水，火能
克之，旺在秋三个月，见春而衰，能克于木。肾属北方水，水生木，土能克之，旺在冬三个月，见夏而衰，能克于火。
所言肝属木，肺属金。肝却见水沉，肺却见水浮者何也？肝者，谓水所生，又行其阴道，被水土所荫，故
见水而沉，及至煮熟还其本性，却又浮也；其肺属金，所谓心之相近，又行其阳道，所以被火抽，见水灌虚浮，
及至煮熟复还本性，而却沉矣。
茅先生论小儿心脏不宜夏∶
久泻变为痢，泻血即难当。形瘦不行坐，心绝生口疮。若逢如此病，端是应南方。若向其中得，何须更忖量。
小儿肝脏不宜春∶
眼爱频频涩，浑身似醉人。时时贪睡卧，心烦美好嗔。唇白眼胞肿，狂言不欲闻。东方应春候，此病不宜春。
小儿脾脏不宜四季∶
面爱常黄好，不可见相传。体差增寒热，行难少食餐。此病忌四季。脚面肿相连。朝来阴肿了，不久在人间。
小儿肺脏不宜秋∶
行后气常急，胀满似怀身。项直时时喘，乳食口不侵。积聚成虚气，惊多癖结成。秋问逢此候，一命定难生。
小儿肾脏不宜冬∶
痰汗时时有，尿多夜夜惊。遍身生粟疥，手足冷如冰。口内虫常出，面黑绝精神。应此北方候，冬得损其身。
In Mr. Wang of Handong's *Jiabao* (Family Treasure), the generation and restriction relationships among the Five Zang Organs are discussed:
The Liver belongs to the East, corresponding to Wood in the Five Elements. Wood generates Fire, and Metal restricts Wood. Liver Qi is most prosperous during the three months of Spring. It can restrict Spleen Earth but declines in Autumn. Taking the Spleen as the "wife," the Liver is Yang, while the Spleen is Yin.
The Heart belongs to the South, corresponding to Fire. Fire generates Earth, and Water restricts Fire. Heart Qi is most prosperous during the three months of Summer. It can restrict Lung Metal but declines in Winter. The Spleen resides in the Central Palace, corresponding to Earth. Earth generates Metal, and Wood restricts Earth. Spleen Qi is most prosperous during the last month of each season (the four seasons' transition months), specifically eighteen days before and after the Start of Spring, Start of Summer, Start of Autumn, and Start of Winter. Additionally, the third, sixth, ninth, and twelfth lunar months are also times when Spleen Qi is prosperous. Spleen Earth can restrict Kidney Water.
The Lungs belong to the West, corresponding to Metal. Metal generates Water, and Fire restricts Metal. Lung Qi is most prosperous during the three months of Autumn, declines in Spring, and can restrict Liver Wood.
The Kidneys belong to the North, corresponding to Water. Water generates Wood, and Earth restricts Water. Kidney Qi is most prosperous during the three months of Winter, declines in Summer, and can restrict Heart Fire.
The text states that the Liver corresponds to Wood and the Lungs to Metal. Why does the Liver sink when encountering water, while the Lungs float? The Liver is said to be generated by Water (Water generates Wood) and operates through the Yin meridians, being shaded by Water and Earth; thus, it sinks upon encountering water. However, after being cooked, it returns to its original nature and floats. The Lungs correspond to Metal. Referring to their proximity to the Heart (or specific elemental interactions) and their operation through the Yang pathways, they are depleted by Fire. Upon encountering water, due to emptiness, they float. After being cooked, they return to their original nature and sink.
Mr. Mao discusses why a child's Heart should not suffer disease in Summer:
Prolonged diarrhea transforming into dysentery, with bloody stools, becomes difficult to manage. The body becomes emaciated, unable to walk or sit; this indicates Heart Qi exhaustion, accompanied by mouth ulcers. If such symptoms appear, it indeed corresponds to the Southern Fire influence. If the Heart is affected during this time, there is no need for further hesitation.
A child's Liver should not suffer disease in Spring:
The eyes frequently feel dry and gritty; the whole body feels like that of a drunk person. There is constant drowsiness and lying down; mental restlessness and irritability occur easily. The lips turn white, and the eyelids swell. Delirious speech is heard, which one wishes not to hear. This corresponds to the Eastern Spring climate; such illness is unfavorable in Spring.
A child's Spleen should not suffer disease in the transition months of the Four Seasons:
The face often appears yellow; the condition must not be ignored or allowed to spread. The physique deteriorates with alternating chills and fever; walking is difficult, and food intake is reduced. This illness is taboo during the seasonal transitions. Swelling connects across the insteps. Morning swelling of the genitalia indicates death is imminent.
A child's Lungs should not suffer disease in Autumn:
After walking, breathing is often rapid; abdominal distension resembles pregnancy. The neck is stiff, and wheezing occurs frequently; milk and food are refused or not taken into the mouth. Accumulations form empty Qi; frequent fright leads to the formation of masses. Encountering this syndrome in Autumn means life is unlikely to be saved.
A child's Kidneys should not suffer disease in Winter:
Phlegm and sweat appear intermittently; urination is frequent, and night terrors occur nightly. The entire body develops millet-sized scabies; hands and feet are cold as ice. Worm-like substances frequently emerge from the mouth; the complexion is black, and spirit is completely exhausted. This corresponds to the Northern Winter climate; contracting this in Winter damages the body.