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(Li Shizhen said: Humans are the leaders of insects and the spirits of all things. Excellent chancellors and physicians all follow human principles. Governing a country and treating diseases rely entirely on human effort. Therefore, humans stand together with Heaven and Earth as the "Three Powers" (San Cai). How can they be grouped with other creatures? As long as it does not violate righteousness, items that seem useless but can be transformed into useful medicines should be recorded; those that are cruel, evil, or filthy should be omitted.)

Ren Fa (Human Hair): Obtains the residual qi of blood; eliminates blood stasis, promotes urination, and tonifies True Yin. Taste is bitter, nature is slightly warm. It reaches the Kidney, unblocks the Liver, and enters the Heart.

Ren Ya (Human Teeth): Taste is salty, nature is hot, and it is toxic. It is a formula for promoting eruption and expelling pus in cases of smallpox/chickenpox lesions.

Ren Ru (Human Milk): Taste is sweet and moistening, benefits Yin, and is a product that harmonizes Ying (Nutritive) and Xue (Blood).

Tong Bian (Child's Urine): If seeking child's urine, its category belongs to salty and cold. It guides blood stasis and heat downward; hematemesis can be cured, bone-steaming fever is reduced, and coughs are treated; consumption/tuberculosis can be medicated.

Qiu Shi (Processed Human Urine Salt): Its efficacy can tonify Yin and remove latent heat. Being of a salty-cold nature, it can also treat coughs and manage deficiency consumptive diseases.

Jin Zhi (Gold Juice/Fermented Human Feces Water): Taste is bitter and cold; it specializes in clearing heat toxins.

(Human hair obtains the residual qi of blood, hence named "Xue Yu". Taste is bitter and slightly warm, non-toxic. Enters the Heart, Kidney, Liver, and Small Intestine meridians. Must be used as ash. It eliminates blood stasis, promotes water passages, and is excellent for treating hematuria/dysuria with blood. Moreover, while moving stasis, it still has the subtlety of benefiting Yin, because hair is transformed from blood, and burning it can still return to blood. Thus, the *Ben Jing* mentions the concept of "self-returning spiritual transformation." Furthermore, it can stop bleeding. For any hematemesis, epistaxis/nasal bleeding, hematochezia, and all conditions where bleeding does not cease, it can be taken internally or applied externally. This is what is meant by "red stops when it sees black."

○ Human teeth are the remainder of bones, so they enter the Kidney. Taste is salty, nature is hot and toxic. The property is capable of attacking and dispersing, so it treats inverted/collapsed smallpox/chickenpox lesions turning black and returning to the Kidney. It uses this to attack pathogens in the Kidney. In other internal and external formulas, it is rarely seen, and its use is uncommon.

○ Human milk is transformed from blood, taste is purely sweet, nature is neutral. Taking it can still tonify and nourish Yin-blood, moistening the zang-fu organs. Only those with insufficient Spleen-Stomach Yang qi and dampness stagnation should not take it. Moreover, human milk especially requires selection from healthy, disease-free individuals. Otherwise, unclean women, due to fire from the Seven Emotions and toxicity from the Five Flavors, may have milk that is yellow-red or thin/watery. Such milk, if taken, brings not only no benefit but harm.

○ Child's urine must come from a healthy boy under thirteen years old. He should not consume scallions, leeks, fishy, or mutton foods. He should drink more sugar-rice soup to assist his water passages. When administering, discard the initial and final portions, and drink while hot. If cooled and reheated, it becomes foul-smelling. Salty, cold, non-toxic. It first enters the Lung, guiding pathogenic heat downward to exit via the bladder's normal pathway. All conditions of lung-heat cough, bone-steaming, and consumptive tuberculosis can use it. Because this substance derives from human qi transformation, within its clearing and descending action, there is also power to assist Yuan Qi. Because its taste is salty, it travels in the Blood level. All conditions of hematemesis, epistaxis, internal blood stasis from trauma/falls, or postpartum blood obstruction have miraculous effects. In summary, child's urine for treating various conditions is suitable for those with Yin deficiency and fire. Even for blood disorders belonging to Yang deficiency, it should be prohibited.

○ Qiu Shi has two types: Yang-refined and Yin-refined, which are white sediments from urine, either refined by fire or clarified by water, both aiming for whiteness. Although preparation methods differ, the taste is salty; the nature may be cold or hot depending on the method. It is said to tonify Yin, reduce fever, and treat deficiency consumptive coughs. Only the Yin-refined type is usable. If Yang-refined through fire, it may instead aggravate fire and worsen illness. This substance is ultimately refined from urine turbidity, similar to Ren Zhong Bai (Urine Sediment). It can only be used to moisten the lower and guide turbidity, effectively managing all strangury diseases. However, relying on it to tonify Yin and benefit Yuan Qi is not credible.

○ Jin Zhi uses the clear juice filtered from human feces, placed in jars, sealed well, and buried underground in places where people walk frequently. After many years, it is retrieved, clear as spring water, with no foul odor; the older, the better. Flower sellers use it for grafting trees, which is very effective. Salty, bitter, sweet, cold, non-toxic. It removes all heat, descends all fire, and resolves all toxins. Regardless of ingesting various poisons accidentally, this can be used to detoxify. Also known as Fen Qing (Feces Clear Liquid).)