It should be said from the historical origin that tea trees have been planted in China for a long time, and later introduced abroad. Lu Yu's tea classics show that drinking tea has become a culture in China. Abroad, such as Britain and France, in the 18 and 19 centuries, colonies spread all over the world, and local specialties flowed into these colonial countries continuously, including tea and coffee. Some people abroad like drinking tea, especially black tea, but more people like coffee. Maybe they prefer the roughness of coffee.