Overview of Huaishen Ejiao longan ointment

Huaishen-refers to yam and Dioscorea opposita. CCTV's "Road to Health" column is called "Food for the Immortals". Shennong's Classic of Materia Medica says that sweet potato bears yam, and its root is used as medicine. Because of its efficacy comparable to ginseng, it is also called "Huaishen". Origin is Jiaozuo, China, known as the "Three Hundred Li Huai Chuan". It collects rich nutrients under different geological conditions in the upper reaches of the Yellow River and absorbs a large number of trace elements infiltrated by karst landforms in Taihang Mountain. The land is loose and fertile, the drainage is rapid, the rainfall is abundant, the water quality is peculiar, the light is sufficient, and the climate is mild. The climate of "no drought in spring, no heat in summer, no waterlogging in autumn and no cold in winter" is most suitable for the growth of root-storing medicinal materials such as yam, rehmannia root and Achyranthes root. According to legend, the ancient Yandi Shennong was seriously ill. In order to cure him, he led civil and military officials, his wife and family to travel widely among the people. On a crisp autumn morning, Shennong and his party came to Huaichuan, and when they saw the beautiful scenery of green leaves and flowers and Lingshan (now Shennong Mountain), they lamented: "It's really a fairy land, a medicine mountain!" So I distinguished grains and tasted herbs here, went to the altar to worship heaven, and finally got four kinds of grass-roots stamens and water to serve, and recovered in a few days. It also makes the four officials of mountain, land, cattle and chrysanthemum protect their values, and is named "Yam, Rehmannia, Achyranthes bidentata and Chrysanthemum" because of people. This is the earliest origin of the "four Huai drugs" circulated in later generations. At present, it is a product of national geographical protection origin.