Lu Dang Shen, also known as Shang Dang Shen, comes from Changzhi, Shanxi Province, and is of very good quality. At present, a lot of Lu Dangshen is cultivated artificially. According to the quality difference, it can be classified into Gonglu, Kuilu, Bald Lu and other qualities, among which Gonglu has the best quality, while Bald Lu has poorer quality.