犀有山犀、水犀二种，而水犀为妙。味苦寒。主百毒虫疰，杀邪气之虫。邪鬼灵气辟
邪瘴气。郁热之毒。杀钩吻、鸩羽、蛇毒，除邪，一切草木虫鸟之毒皆除之。不迷惑，魇寐
。解心经热邪，通心窍。
牛属土，而犀则居水，水无兽，惟犀能伏其中，则其得水土之精可知。凡物之毒者，投
水土则毒自化。犀得水土之精，故化毒之功为多。而其角中虚有通灵之象，故又能养心除邪
也。
味咸平。主目瞑，明目，夜视有精光。存养肝经阴气之精。久服，令人喜乐媚好
无忧。肝气和则乐。
凡有翼能飞之物，夜则目盲。伏翼又名天鼠，即鼠类也，故日出则目瞑而藏，日入则目
明而出，乃得阴气之精者也。肝属厥阴，而开窍于目，故资其气以养肝血，而济目力，感应
之理也。物有殊能，必有殊气，皆可类推。
古人用蝉，今人用蜕，气性亦相近。味咸寒。主小儿惊痫夜啼，癫病寒热。皆小儿风
热之疾。
蚱蝉感凉风清露之气以生，身轻而声嘹亮，得金气之发扬者也。又脱落皮壳，亦属人身
肺经之位，故其性能清火驱风，而散肺经之郁气。若其质轻虚，尤与小儿柔弱之体为宜也。
蚱蝉日出有声，日入无声，止夜啼，取其意也。
味咸。主小儿惊痫夜啼，风痰之病。去三虫，风气所生之虫。灭黑 ，令人面色好
，能去皮肤之风斑，令润泽。男子阴疡病。下体风湿。
蚕，食桑之虫也。桑能治风养血，故其性亦相近。僵蚕感风而僵，凡风气之疾，皆能治
之，盖借其气以相感也。僵蚕因风以僵，而反能治风者，何也？盖邪之中人也，有气而无形，
穿
经透络，愈久愈深，以气类相反之药投之，则拒而不入，必得与之同类者，和入诸药，使为
乡道，则药力至于病所，而邪与药相从，药性渐发，邪或从毛空出，或从二便出，不能复留
矣，此即从治之法也。风寒暑湿，莫不皆然，此神而明之之道，不专恃正治奏功也。
犀角有山犀和水犀两种，其中水犀更为优良。其味苦，性寒。主治各种毒虫和疰气（一种由外邪引起的传染病），能杀灭致病的邪气之虫。能驱避邪鬼灵气和瘴气。清除郁结的热毒。能杀死钩吻、鸩羽（有毒的羽毛）、蛇毒等，祛除邪气，一切草木虫鸟之毒皆可消除。使人不迷惑，不被噩梦魇寐所困扰。能解除心经的热邪，通利心窍。
牛属土，而犀居于水，水中本无兽类，唯有犀牛能潜游其中，可知它获得了水土的精气。凡是毒性之物，投入水土中则毒性自会化解。犀角获得了水土的精气，所以化解毒素的功效最多。而且它的角中空，具有通灵的象征，所以又能滋养心脏、祛除邪气。
犀角味咸，性平。主治眼睛昏花，能明目，夜间视物有神光。能存养肝经阴气的精华。长期服用，能使人喜悦、容貌美好、无忧无虑。肝气调和则人快乐。
凡是长翅膀能飞行的动物，夜晚时眼睛失明。伏翼又名天鼠，属于鼠类，所以日出时眼睛昏花而躲藏，日落时眼睛明亮而出没，这是因为它获得了阴气的精华。肝属厥阴经，开窍于目，所以借助它的精气来滋养肝血，辅助视力，这是感应的道理。事物有特殊的才能，必然有特殊的精气，都可以类推。
古人使用蝉体，今人使用蝉蜕，气性也相近。味咸，性寒。主治小儿惊痫、夜啼，癫病及寒热症状。这些都是小儿风热引起的疾病。
蚱蝉感受凉风和清露之气而生，身体轻盈且声音嘹亮，是获得了金气发扬特性的动物。又因其脱落皮壳，也对应人身肺经的位置，所以它的性能能够清火驱风，疏散肺经的郁结之气。如果它的质地轻虚，尤其适合小儿柔弱之体。
僵蚕味咸。主治小儿惊痫、夜啼，以及风痰引起的疾病。能去除三虫（风气所生的寄生虫）。能消除黑斑，使人脸色好，能去除皮肤上的风斑，使皮肤润泽。主治男子下部溃疡病和下体风湿。
蚕是吃桑叶的虫子。桑树能治风养血，所以蚕的性质也相近。僵蚕因受风而僵硬，凡是有风气引起的疾病，都能治疗，大概是借助它的气机来相互感应。僵蚕因为风而僵硬，反而能治疗风病，为什么呢？大概是因为邪气侵入人体，只有气而没有形质，穿透经络，越久越深，如果用与邪气性质相反的药物投治，邪气会拒绝进入，必须得到与邪气同类的药物，混合在其他药中，作为向导，使药力到达病所，邪气与药物相从，药性逐渐发挥，邪气或许从毛孔排出，或许从小便大便排出，就不能再停留了，这就是从治的方法。风寒暑湿，没有不是这样的，这是神妙明达的道理，不专门依赖正治法奏效。
Rhinoceros horn is of two types: mountain rhino and water rhino, with the water rhino being superior. Its taste is bitter and its nature is cold. It primarily treats various poisonous insects and *zhu* qi (a type of infectious disease caused by external pathogens), killing pathogenic insects associated with evil qi. It repels evil spirits, spiritual energy, and miasma. It clears toxic heat accumulation. It kills *Gougen* (Aconitum ferox), *Zhen yu* (poisonous feathers), and snake venom, dispelling evil; all toxins from plants, trees, insects, and birds are eliminated. It prevents confusion and nightmare sleep. It resolves heat-evil in the Heart meridian and unblocks the heart orifices.
The ox belongs to Earth, whereas the rhino resides in Water. Since there are no beasts in water, only the rhino can submerge within it, indicating that it has obtained the essence of both Earth and Water. For any toxic substance, when placed in Earth and Water, its toxicity naturally transforms. The rhino horn, having obtained the essence of Earth and Water, possesses great power in resolving toxins. Furthermore, its horn is hollow in the center, symbolizing spiritual penetration, thus it can also nourish the Heart and dispel evil.
Its taste is salty and its nature is neutral. It primarily treats dim vision, improves eyesight, and allows for clear night vision with bright light. It preserves the essence of Yin Qi in the Liver meridian. Long-term consumption brings joy, beauty, and freedom from worry. When Liver Qi is harmonious, one feels happy.
All winged creatures that fly become blind at night. *Fuyi* (also known as *Tianshu*, belonging to the rodent family) becomes blind at sunrise and hides, but sees clearly at sunset and emerges, as it has obtained the essence of Yin Qi. The Liver belongs to the Jueyin meridian and opens into the eyes; therefore, utilizing its Qi to nourish Liver Blood and assist vision follows the principle of resonance. Entities with special abilities must possess special Qi, which can be inferred analogously.
In ancient times, cicadas were used; today, cicada sloughs (*Chantui*) are used, and their Qi and nature are similar. Their taste is salty and their nature is cold. They primarily treat pediatric convulsions, epilepsy, night crying, and alternating chills and fever in manic disorders. These are all diseases of wind-heat in children.
The grasshopper cicada (*Zhachan*) is born from the Qi of cool winds and clear dew; its body is light and its voice resonant, embodying the expansive nature of Metal Qi. Additionally, shedding its skin corresponds to the position of the Lung meridian in the human body; thus, its properties can clear fire, drive out wind, and disperse stagnant Qi in the Lung meridian. Its light and void texture is particularly suitable for the delicate constitution of children.
The grasshopper cicada sings at sunrise and stops at sunset; using it to stop night crying relies on this symbolic meaning.
Silkworm (*Jiangcan*) tastes salty. It primarily treats pediatric convulsions, epilepsy, night crying, and diseases caused by wind-phlegm. It eliminates three types of parasites (worms generated by wind-pathogens). It removes black spots, improves complexion, clears wind-spots on the skin, and makes the skin lustrous. It treats ulcers of the male genitals and damp-wind in the lower body.
Silkworms are insects that eat mulberry leaves. Mulberry can treat wind and nourish blood, so the silkworm shares similar properties. Silkworms become stiff due to wind; they can treat all diseases caused by wind-pathogens, likely through mutual resonance of their Qi. Why does a silkworm, which becomes stiff from wind, cure wind-diseases? Generally, when evil invades the human body, it exists as Qi without form, penetrating meridians and collaterals, becoming deeper over time. If drugs with opposing natures to the evil are administered, the evil rejects entry. One must use substances of the same category as the evil, mixing them with other herbs to act as guides, allowing the medicinal force to reach the site of the disease. The evil aligns with the medicine, the medicinal properties gradually manifest, and the evil may exit through hair follicles or the two bowels, unable to remain. This is the method of "treating according to the disease" (Cong Zhi). Wind, cold, summer-heat, and dampness are all treated similarly; this is the profound and illuminating principle, not relying solely on orthodox treatment methods for efficacy.