Brief introduction of Shang Dangshen

Shangdong refers to the ginseng produced in Shanxi, China. Notes on Materia Medica, as a negative textbook of authentic medicinal materials, mentions that "the strength is not as good as that of this state". Therefore, it is better to treat a disease than to treat a disease ... Shangdang Codonopsis is almost no longer sold. Huayin asarum, abandoned like mustard. It is also recorded in Compendium of Materia Medica.