How did Yan Ruyu come from?

Emperor Zhao Heng of the Song Dynasty:

"the rich don't have to buy fertile land, there are thousands of pounds 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; I don't hate that no one goes out, and there are many cars and horses in the book; Don't hate unscrupulous media when you get married. There is Yan Ruyu in the book; If a person is satisfied with his ambition. Read the six classics to the window. "

It means: becoming famous by reading was an excellent way out of life at that time. Only when you have fame can you get wealth and beauty.

Explain with modern concepts that reading is to receive education, and education is a function of society, which enables students to master knowledge and study ability, thus joining the society and serving the people.

At first, "Yan Ruyu" didn't mean a woman named Yan or Yu. As the name implies, her appearance is like beautiful jade, which is used to describe the beauty of a woman or refer to a beautiful woman. However, in Book Idiot in Strange Tales from a Lonely Studio, the author Pu Songling was inspired by the phrase "There is Yan Ruyu in the book" and used it on the heroine (a fairy in the book) in the form of a name. Nowadays, it is common to use "Yan Ruyu" as a female name in film and television works, and the word "Yan" does have its surname, so it naturally becomes a naming habit.