How to distinguish Pu 'er tea from the bottom of leaves?

The bottom of dried raw Pu 'er tea is maroon to dark maroon, which is very similar to the bottom color of Oriental Beauty Tea in Taiwan Province Province. The leaves are full and soft, full of freshness. A cup of tea celebrating the old Pu 'er tea can show the fresh vitality of a hundred years ago. The leaves of Pu 'er ripe tea are mostly dark chestnut or black, and the leaves are thin and hard. If it is fermented in large quantities, it will be obviously carbonized, just like being roasted in the hot sun. Some old leaves will be broken if they are in water for a long time. However, if some cooked teas are not piled for a long time and the degree of fermentation is not heavy, the bottom of leaves will be very close to the bottom of raw tea. On the other hand, some raw teas, such as tea seeds, cannot be dried immediately after kneading, and the leaves will be dark brown at the bottom, and the soup will be lighter and darker, which is the same as the cooked tea that has only been slightly fermented.