You can buy some novels, magazines, professional books, etc. , but you can't design illegal content such as pornography and violence. It is best not to involve sensitive topics such as military affairs and politics. At present, popular novels in fantasy novel, such as novels about crossing themes and notes about grave robbing, are suspected of spreading criminal methods, so it is best not to bring them with you, and generally refuse to bring them into prison.
Family members are still very welcome to provide prisoners with labor skills training, science and technology books and other prison guards.
Prisons generally have computer classrooms with a large number of e-books, but they are not allowed to read for a long time and generally only provide teaching purposes.