Chaihu, also known as Chaihu and Bianhu, is a real estate Chinese herbal medicine in Qixian County. It belongs to Bupleurum and is produced in 16 townships of Jixian County. It is derived from the umbelliferous plant Bupleurum chinense Dc.d. Dry the roots. In the Song Dynasty, Su Shi said in the book "The Scriptures and Herbs": "Chaihu Shenghong's farmland and haiku" mentioned in the article, Hongnong is the Hongnong County, and Jixian County set up Luyi County in the Song Dynasty, belonging to Hongnong County. Because of its thick and fat roots, yellow-brown color, no residual stems, high volatile oil, saponin content, good curative effect, has the reputation of "Bupleurum King" and "嵩胡".