In China - Pu-erh teas (similar to ancient Shan Tuyet tea in Vietnam) are very valuable, tea collectors can "change their lives" when auctioning antique tea cakes.
In 2005, half a kilo of 64 year old Pu Er tea was successfully auctioned at 3 billion dong. In 2019, seven traditional Pu Er tea cakes preserved from the 1920s were sold for 1.08 million USD (about 25 billion VND).
In Vietnam, Vietnamese tea connoisseurs are willing to pay tens of millions of dong for a precious Shan Tuyet tea cake. Tea cakes are cherished, preserved and valued by collectors as a valuable long-term investment asset.
Because, like fine wine, the longer the cake, the better it tastes. Fermentation for a long time helps to push the aroma, sweetness of honey to the optimum, the tea substance is converted into medicine, used to clear heat, detoxify, reduce blood fat, lose weight, reduce nervous tension, is a drink. useful sedative, used every day, every season of the year is suitable, so people often consider it as a form of antiquity.