气味辛，微温，无毒。主明目。
（萤火《本经》名夜光，《别录》云萤火，生阶地池泽，七月七日取阴干。萤有三种，
一种
茅根所化。《吕氏月令》所谓∶腐草化为萤者是也。一种长如蛆 ，尾后有光，无翼不飞，
乃竹根所化，其名曰蠲。《明
堂月令》所谓∶腐草化为蠲者是也。
一种水萤，居水中。唐李子卿《水萤赋》所谓∶彼何为而草化，此何为而居泉是也。入药用
飞萤。）
润下作咸，其臭腐，腐草为萤，禀水气也。萤为火宿，名曰萤火，禀火气也。生于七月，
其时大火西流，故气味辛温。水之精，火之神，共凑于目，故《本经》主明目，而《别录》
又云∶通神精。
气味咸温，无毒。主治妇人疝瘕，小便不利，小儿中风，项强背起，摩之。
（衣鱼一名白鱼，即蠹鱼也，生衣帛及书纸中，故名衣鱼，形略似鱼身有白粉，其色光
亮如
银，故又名白鱼。俗传衣鱼入道经中，食神仙字，则身有五色，人得吞之，可至神仙，此方
士谬传，不可信也。）
衣鱼色白，碎之如银，禀金气也。命名曰鱼，气味咸温，禀水气也。水能生木，故治妇
人之
疝瘕。妇人疝瘕，肝木病也。金能生水，故治小便之不利。小便不利，水不行也。小儿经脉
未充，若中于风，日久不愈，则项强背起，乃督脉为病，督脉合肝部，属太阳。衣鱼禀金水
之化，故当用以摩之。
Flavor: Acrid (Xin), slightly warm. Non-toxic. Indicated for improving vision.
(Firefly, known as "Ye Guang" in the *Shennong Bencao Jing* [Divine Farmer's Materia Medica], is described in the *Bielu* [Supplement to the Divine Farmer's Materia Medica] as growing on ground near steps, ponds, and marshes. It should be collected on the seventh day of the seventh lunar month and dried in the shade. There are three types of fireflies: one type transforms from the roots of thatch grass, corresponding to the saying in the *Lüshi Chunqiu·Yueling* [Monthly Ordinances of Master Lü]: "Decaying grass transforms into fireflies." Another type is long like a maggot, with light at the tail, wingless and unable to fly, transforming from bamboo roots; its name is "Juan," corresponding to the saying in the *Mingtang Yueling*: "Decaying grass transforms into Juan." The third type is the water firefly, which lives in water, as mentioned in Li Ziqing's *Ode to Water Fireflies* in the Tang Dynasty: "Why does some transform from grass, while others dwell in springs?" For medicinal use, the flying firefly is employed.)
Fireflies possess an acrid and warm flavor, inheriting the Qi of Water. As hosts of fire, they are named "Firefly," inheriting the Qi of Fire. They grow in the seventh month, when the Great Fire star moves westward; hence, their flavor is acrid and warm. The essence of Water and the spirit of Fire converge in the eyes; therefore, the *Shennong Bencao Jing* states it improves vision, while the *Bielu* adds that it unblocks spiritual clarity.
Flavor: Salty (Xian), warm. Non-toxic. Mainly treats women's hernia masses (Shenjia), difficulty in urination, and pediatric wind-stroke causing stiffness of the neck and back; applied externally via rubbing/massage.
(Clothes moth, also known as White Fish, is the same as the silverfish. It lives among clothes, silk, and book papers, hence the name "Clothes Moth." Its shape resembles a fish body covered with white powder, shining like silver, hence also called "White Fish." Folk legends claim that if clothes moths enter Daoist scriptures and eat characters of immortals, their bodies turn five-colored; humans who swallow them can become immortals. This is a fallacy by alchemists and should not be believed.)
The clothes moth is white and crushes like silver, inheriting the Qi of Metal. Named "Fish," with a salty and warm flavor, it inherits the Qi of Water. Since Water generates Wood, it treats women's hernia masses. Women's hernia masses are disorders of Liver Wood. Since Metal generates Water, it treats difficulty in urination. Difficulty in urination indicates impaired flow of Water. Children's meridians are not yet fully developed; if struck by Wind pathogens and left untreated for a long time, it leads to stiffness of the neck and back. This is a disorder of the Du Meridian (Governing Vessel), which combines with the Liver region and belongs to the Taiyang (Greater Yang) category. The clothes moth inherits the transformation of Metal and Water; therefore, it should be used for external rubbing/massage.