High grade. Tongqingtang Pu'er tea has a reputation of more than 200 years. It is because of its "six selections and six discards" and meticulous workmanship that its quality can be passed down to the world. Six selections and six discards: "Select spring tea, select tender tips, select origin, select purity, select taste, select aroma; discard coarse and old tea, discard bad taste, discard unclean, discard impurities, discard odor, discard deterioration." Tongqing Pu'er tea is a high-end tea with meticulous craftsmanship. No matter the change of dynasties or the change of trademarks, it is difficult to change the quality of this century-old Pu'er tea. The quality of the inside and outside of the cake is consistent, and the quality of the tea is reliable and stable.