How do children send new books to their parents?

Just send a notice directly among the parents.

Kindergartens inform parents to send new books, which can be notified by class groups. When children enter school in the first year, each class has a corresponding class group, which is to facilitate communication between parents and teachers. So if the teacher wants to inform parents to send a new book, it is suggested that they can send a message directly in the class group. Notifying everyone in this way can ensure that parents can inform each other and keep abreast of the release of new books.