Tea leaves with low fermentation degree are often cold, such as white tea, green tea, jasmine tea and fragrant Tieguanyin. \x0d\ and black tea and Pu 'er tea belong to warm tea. \x0d\ Oolong tea and Dahongpao in green tea belong to neutral tea. \x0d\ Generally speaking, black tea is warm, can dispel cold and warm stomach, and has a nourishing effect; Green tea is cool, and its function is mainly to clear away heat and refresh.