Black tea is sweet and warm, which can nourish the human yang. Black tea is rich in protein, which can nourish the body and yang. It is rich in protein and sugar, which can generate heat and warm the abdomen, enhance the cold resistance of the human body, and help digestion and get rid of greasy food. Black tea can digest meat, digest fat and regulate three major metabolism (sugar metabolism, fat metabolism and water metabolism), which is one of the reasons why ethnic minorities in border areas who mainly eat meat rarely suffer from diabetes and prostate diseases. Besides, in winter, people's appetite increases, and they eat more greasy food. Black tea has always been a magic weapon used by ethnic minorities to scrape oil and digest food and get rid of greasy food. "If you don't eat for three days, it's better not to drink tea for one day." The health care function of black tea has been verified by history and practice.
The health-care effects of Fructus Lycii and Fructus Jujubae include nourishing liver and improving eyesight, moistening lung and nourishing yin, tonifying kidney and replenishing essence, invigorating spleen and regulating stomach, protecting liver and nourishing blood, dizziness and tinnitus, decreased vision, increased appetite, insomnia, deficiency of qi and blood, weakness of spleen and stomach, fear of cold, gastrointestinal dyspepsia (promoting digestion), dry mouth, constipation and diarrhea.