One of the functions of black tea: to lose weight, the clothes should be clean and cool in the hot sun, but there is nowhere to hide the next fat. In addition, many urbanites like to get together to eat barbecue and drink beer in summer, which is easy to accumulate fat. If you want to stay fresh and healthy in summer, you might as well drink black tea often. As far as traditional tea is concerned, oolong tea is most familiar with its weight-reducing and lipid-lowering functions. But compared with black tea, the fat-reducing effect of oolong tea can be described as playing tricks on others. After a unique fermentation process, black tea will produce a new substance-lipolytic enzyme, which makes black tea the best slimming tea, and its lipolytic ability is several times that of oolong tea, so black tea is often called slimming tea. The second effect of black tea: antioxidant whitening. Exposure to the hot sun in summer can lead to sunburn, aging, dry peeling, pigmentation and wrinkles. Drinking black tea for a long time can significantly inhibit melanin, delay aging, whiten skin and reduce wrinkles. There is an active cytokine in black tea, and its structure is very similar to that of human enzymes. When it acts on somatic cells, it will have a strong antioxidant effect and free radical scavenging effect. Because the living cell enzyme in black tea is an ecological cytokine produced completely naturally by fermentation process in the production and processing process, the enzyme in black tea has higher activity than other tea leaves. The third effect of black tea: cleaning the stomach. In summer, people like to eat cold food. Coupled with the sultry weather, food is easy to deteriorate, so summer is also the season when gastrointestinal problems are most likely to occur. One of the biggest functions of black tea is to clean the stomach. The unique fermentation process of black tea can produce rich probiotics-ascomycetes coronaria.