Pu'er tea, Pu'er coffee and Pu'er dendrobium nobile were nicknamed "Pu'er's three treasures" by Pu'er people. In recent years, Simao No. 4 Primary School has written three local textbooks: Book of Tea, Dendrobium Nobile and Coffee Time. These living textbooks contain strong nostalgia and carry the hope for hometown development. Now Book of Tea has become a designated textbook for Pu'er's young pioneers.