Dangshen is mainly produced in Pingshun, Lingchuan, Licheng, Wuxiang, Changzhi and other counties in the southeast of Shanxi. History: When Li Shizhen introduced Codonopsis pilosula in Compendium of Materia Medica in Ming Dynasty, he wrote: "It's that party member's roots are quite slender and drooping, with more than one foot and ten disambiguations. Its price is slightly better than silver. " Codonopsis pilosula has a conical root, enlarged top and many stem marks, commonly known as "lion head". The cross section of Codonopsis pilosula is yellowish or yellowish-white, with a yellow center in the center, which has the characteristics of sweet taste, big head, thick and fat length, straight skin lines, yellow and black skin color, tight and dense meat, and many wrinkles without dryness. It's better to be long, thick and white. Codonopsis pilosula is an authentic medicinal material in Shanxi. Taking the root as medicine, it is flat and sweet, and has the functions of tonifying the middle energizer, invigorating qi, promoting fluid production to quench thirst and regulating the spleen and stomach. It is one of the commonly used drugs in traditional Chinese medicine. The Lu Party is the most famous.