Collection and health care function of Pu 'er tea: 1. What should I pay attention to when purchasing Pu 'er tea? Pu 'er tea can be divided into trees and shrubs in raw materials, new tea and old tea in years, raw tea and cooked tea in fermentation transformation, fragrant, camphor, lotus, jujube, ginseng and aged tea in taste, and dry and wet in storage. These differences make the price, taste and efficacy of Pu 'er tea different. At present, there are many varieties of Pu 'er tea in the market, and the good and the bad are intermingled. Consumers should be careful when choosing: