Dahongpao is out of date. You can still drink it if you don't open it. As long as Dahongpao is well preserved and does not deteriorate due to moisture, it can still be drunk after the shelf life, provided that there is no deterioration such as mildew, odor and moth. Dahongpao (one of the top ten famous teas in China) is a famous treasure in Wuyi Rock Tea (Oolong Tea) in Fujian. It is the best in Wuyi rock tea. Known as "the first in tea", it is a national treasure. Produced in Wuyishan, southeast of Chong 'an, Fujian. Dahongpao is the most famous tea in Wuyishan. It grows on the steep rock wall of Kowloon. Dahongpao tea can still be brewed for 9 times. Thus won the title of "the king of tea", famous at home and abroad. Wuyishan Dahongpao is the representative of Wuyi Rock Tea, and only Wuyishan has Dahongpao. When tea buds germinate in early spring, from a distance, the whole tree looks like a red robe, which is said to be the reason why this tea is named Dahongpao.