Because East Asian countries were influenced by Chinese imperial examination system in ancient times, everything was not as good as reading, and the population density of East Asian countries was relatively high, which put forward high requirements for educational resources. It is difficult to have sufficient per capita educational resources and high quality as in Europe and America. Furthermore, East Asians are diligent, which is reflected in the fact that the study time in China, Japan and South Korea is the highest in the world, and there are many people who study hard in East Asia.