Bingdao tea ingredients, ancient tree tea and traditional tanning process allow for indefinite storage. Compared with traditional black tea, this sun-dried black tea retains a large number of active substances in the tea, and most of the tea polyphenols are oxidized to theaflavins and thearubigins. This is a gift unique to Southern Yunnan sunshine, and can be stored for over time, and becoming even more fragrant with time. Theaflavin is known as the “soft gold” in tea.The warm taste and tea properties of tanned black tea are suitable for almost everyone’s physique, a good companion when the winter cools down, and it is also the best escort messenger for the change of seasons.