Fermented tea, like Pu 'er tea and black tea, is mild in nature. So it's normal to get a little angry.

Chinese medicine believes that the tea consumed in spring, summer, autumn and winter should be different. That is, we should drink suitable tea in different seasons according to the nature and taste of various teas. Black tea can warm the stomach, wake up, and help digestion. It is most suitable to drink warm black tea in cold winter. Green tea tastes bitter and cold. Drinking it in winter can easily cause stomach chills and may also affect appetite. When the summer is hot, drinking green tea can just take its bitter and cold nature, relieve heat and thirst.