Is Dihuang an ethnic minority herb?

Di Huang distribution area: Liaoning, Hebei, Henan, Shandong, Shanxi, Shaanxi, Gansu, Inner Mongolia, Jiangsu and other provinces have, obviously not related to belonging to the ethnic group, in addition, because of its underground tuberous roots for the yellowish-white and named Di Huang, Di Huang for one of the traditional Chinese medicine, the earliest canon in the Shennong Ben Cao Jing. According to the concoction method in the herb is divided into: fresh dihuang, dry dihuang and cooked dihuang, at the same time, its medicinal properties and efficacy also has a big difference, according to the "Chinese Materia Medica" classification of efficacy: fresh dihuang for the clearing of heat and cooling the blood; cooked dihuang is a tonic medicine. Provided by Baidu Encyclopedia.