hello, from the point of view of nutrition and hygiene, the tea soup is exposed to the air, and it is easy to breed corrupt microorganisms for a long time, which makes the tea soup rancid. In addition, the tea soup has been put for a long time, such as tea polyphenols, vitamin C and other nutrients, which is easy to oxidize and reduce. Therefore, although there is no harm in overnight tea, it is better to drink it with the bubble in general. I hope you can adopt it!