Tang Materia Medica has a supplement of Jinshi Department, but it was abandoned after Compendium of Materia Medica. During the Cultural Revolution, a national training textbook for barefoot doctors, Common Chinese Herbal Medicines in the North, was published.

It refers to the bean-like particles formed on the wall near the corner by years of rain, which are salty and astringent and have the effect of hemostasis and bacteriostasis. The main components are silicides, calcifications and salts.

Small skin wounds, after cleaning, can quickly stop bleeding and scab by applying rain soil and puffball fungus to the affected area.