As one of the three largest non-alcoholic beverages in the world, tea is planted and produced in more than 50 countries. Currently, there are nearly 3 billion tea lovers in more than 160 countries and regions worldwide. Studies have shown that regular tea drinking has a variety of health values. For example, tea polyphenols have much stronger anti-aging effect than vitamin E. A cup of 300 ml green tea has the same antioxidant function as a bottle of claret. EGCG, the main component of tea polyphenols, is the nemesis of all cancers. Daily tea drinking helps lose weight, so tea ranks No. 1 in the United States weight-losing products. In addition, the amino acid in tea promotes the massive secretion of dopamine, which helps to generate a sense of pleasure. Various health values of tea have further promoted tea drinking.