Characteristics of black tea: the soup is dark brown and oily black. Characteristics: According to medical experts' research, the oxygen carrying capacity of hemoglobin is more than doubled after drinking black tea, and black tea has the function of red blood cell regeneration. No wonder there is a proverb "You can't be absent for one night" on the plateau. Can fully supplement various raw materials in the growth and development of red blood cells; Has the functions of radiation resistance and anoxia resistance; Can improve blood circulation and oxygen transport capacity; Rich in selenium, fully protect red blood cells and hemoglobin. This kind of tea is mainly for some ethnic minorities. Tibetans, Mongolians and Uighurs all like to drink black tea, which is a necessity in daily life. Representatives: Xiangjian, Hunan Black Tea, Laoqing Tea, Sichuan Border Tea, Liubao Three Tea, Pu 'er Tea, Black Brick Tea, Fuzhuan Brick Tea, Kangzhuan Tea, etc. Black tea has a certain effect, and oolong is actually not bad. Green tea is characterized by green color and golden soup color. Features: slimming. Because drinking oolong tea can improve the functions of protein-like fat (enzyme) and fat-decomposing enzyme, the fat metabolism is relatively improved after drinking oolong tea. Beauty, anti-aging. Reactive oxygen species (ROS) have a far-reaching impact on the aging and diseases of the body. ROS is a substance produced by ultraviolet rays, smoking, food additives, stress and other factors, which can cause lifestyle diseases, skin aging, wrinkles and other problems. Tea polyphenols in oolong tea can promote the increase of SOD and scavenge active oxygen. In addition, oolong tea itself contains vitamin C, which really kills two birds with one stone for whitening skin. It can also improve skin allergy, prevent tartar and prevent tooth decay.