He also advocates choosing his favorite books for in-depth study on the basis of "extensive reading". In his study, he advocated independent thinking, paid attention to the combination of observation and practice, and "read this living book in the world with his own eyes" to "make the book he read come alive." For what he can't understand, he thinks, "If you are in doubt, you will only see that place, and you won't understand it no matter how long you look at it." So jump over.

3. Lu Xun chewed pepper to drive away the cold