What are the authentic medicinal materials in Henan?

Henan is rich in Chinese herbal medicine resources, with more than 2,780 kinds. The "Four Great Huai Medicines" produced in Jiaozuo (formerly Huaiqing House) have been cultivated for more than 3,000 years. Since the Zhou Dynasty, the "Four Huai Medicines" have been listed as royal tributes. After the Ming and Qing Dynasties, the trade of Huaiyao became more and more prosperous, and pharmacies, business names and Huaiyao conferences were opened all over the country, and Huaiqing Guild Hall was spread all over many provinces and regions. In the cultivation, processing, management and trade activities of Huai medicine, it gradually produced and developed into Huai medicine culture and Huai Shang culture. In addition, Radix Angelicae Dahuricae, Radix Salviae Miltiorrhizae, Flos Lonicerae, Rhizoma Pinelliae, Radix Platycodi, Fructus Corni, Flos Magnoliae, Fructus Forsythiae, Rabdosia rubescens, Radix Bupleuri, etc. It is a real high-quality and large number of medicinal materials.