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What is the relationship between the cost of superstar e-library and the number of reading days and books?
Fee: I am a vip member of 300 yuan for one year. If it is too expensive, I can buy a theme pavilion. For example, I heard that it costs 100 yuan a year for medicine. As I am a vip, I am not familiar with the theme pavilion.

Vip members can download 150 books a month. However, from 1 day of each month, they can only download 20 books a day. Superstar explained that if you let 150 books a day, after this month, everyone will concentrate on the moon, and the flow of people will be too large and crowded. So you can only download 20 books a day.

Because books are borrowed, not given, and can only be read during the membership period. Now, in order to preserve it permanently, people usually decrypt it by virtual printing and print it into pictures or pdf format. You can search them in "Know". There are many.