Huinong.com。 Walnut is a deciduous tree with edible fruit. A catty of walnuts is sold in Huinong.com and 5 yuan at a reasonable price. Walnut is rich in potassium, calcium and other elements, which can resist the adverse effects of sodium on blood pressure and effectively lower blood pressure. Walnut is rich in vitamin B and vitamin E, which can delay the occurrence of neurodegenerative diseases and enhance people's physique.