When did the tea tree originate?

According to the botanical classification method, the tea tree belongs to Angiosperm, Dicotyledon, Primitive Tepal, Camellia, Camellia, and Camellia. It is an evergreen woody plant. The height of the tree-type tea tree can reach 15 to 30 meters, the base stem circumference is more than 1.5 meters, and the life span can reach hundreds of years or even thousands of years. At present, the most common type is cultivated tea trees. In order to produce more buds and leaves and facilitate harvesting, people often use pruning methods to inhibit the vertical growth of tea trees and promote the horizontal expansion of tea branches. Therefore, the tree height is usually between 0.8 and 1.2 meters. The economic age of tea trees is generally 50 to 60 years. Tea originated in China, and it existed before people discovered and used it. China is known as the "hometown of tea". There are written proofs that people have begun to cultivate and use tea trees as early as the Shang and Zhou dyn...