Raw and medicinal \x0d\ Tea drinking originated from fresh leaves of tea trees. This is the product of our ancestors' struggle against nature in order to survive. In primitive society, humans hunted animals and looked for plants as food in Shan Ye. Try picking leaves from various plants and chewing them in your mouth. Sometimes I meet some poisonous weeds and get poisoned after eating them. Although the taste of fresh tea is bitter, it can make people excited and detoxify after eating. This is the origin of raw crude drugs. \x0d\ Because I have to go to Shan Ye to pick the leaves of raw tea trees, the traffic is inconvenient, and it is even more difficult when it rains. Moreover, the growth of tea trees is seasonal, and fresh leaves are not resistant to storage. So, put fresh clothes in the sun on sunny days so that you can take them at any time. This is the most primitive tea processing method, and now it is called "green slice". But the dried leaves are hard to swallow, and later they developed from eating to drinking. \x0d\ On the other hand, when it rains, fresh leaves can't dry, so they are pressed in a crock, and after a while they become "pickled tea" that can be eaten directly. Even if they don't cook when eating, ethnic minorities in southern Yunnan still have the habit of processing "pickled tea" and eating "pickled tea". After picking fresh leaves, they spread them out and put them directly into the pottery jar, then press them with a heavy cover until the jar is full. It became "pickled tea" in a few months. When you eat it, mix it with spices and chew it in your mouth, so it is edible rather than drinking.