There is a golden house in the book, and there is Yan Ruyu in the book .. There are thousands of chestnuts in the book, and there are many clusters of horses and chariots in the book.

It comes from the Song Emperor Zhao Heng:

"The rich don't have to buy fertile land, but there are thousands of millet in the book; There is no need to build a high hall to live in, and the book has its own golden house; Don't hate no one to go out, and there are many horses and chariots in the book; Don't hate unscrupulous media when you marry, and there is Yan Ruyu in the book; If a man is content with his ambition. Six classics read to the window. "

It means that studying for fame was an excellent way out of life at that time. Only after earning fame can you get wealth and beauty.

To explain with modern ideas, reading is to receive education, and education is a function of society, which enables students to master knowledge and learn to join the society and serve the people.