Why is Laoshan tea divided into before rain and after rain?

Because Laoshan tea is mainly green tea, green tea has a lot to do with the season. Tea before Ming Dynasty is the best, followed by Grain Rain tea, followed by long summer green tea. In Jun Mei Ling, gold, silver and copper indicate that the tea before the sun is gold grade, the tea before the rain is silver grade, and the tea in the long summer is copper grade.

The teeth of Mingqian tea are the most tender in the coldest time, and after a winter's accumulation, they are the most nutritious. The later the season, the higher the temperature and the worse the quality of tea.