Blue brick tea is made by pressing old green tea, which has a natural tea fragrance that other ordinary black tea and Pu 'er tea do not have. The color is blue and brown, the aroma is pure, the soup is red and yellow, and the taste is rich. After fermentation, autoclaving at high temperature and natural storage, catechins and tea polyphenols in green brick tea are more soluble in water than ordinary tea. Drinking green brick tea not only quenches thirst, but also has the unique effects of relieving boredom, invigorating stomach, reducing fat and slimming, keeping out the cold and refreshing, sterilizing and stopping diarrhea, and reducing the three highs (hyperglycemia, hyperlipidemia and hypertension), which is incomparable to other teas.