Yes, yam in traditional Chinese medicine has been "prepared". It is not only a nourishing vegetable, but also a commonly used traditional Chinese medicine. It is characterized by containing a large amount of mucin and DHEA, which have special health-care effects on the human body. It can be used as an auxiliary treatment for cardiovascular disease, diabetes, chronic lung disease and gastroenteritis. Long-term consumption can resist aging, enhance immune function, and improve the vitality of middle-aged and elderly people.