Book-Sharing Platform / Service design

Book-borrowing service is available at airports, railway stations and bus stations. People can borrow their interested books from the shared bookcase and take them to read. After getting off, people return the books at the shared book case of the destination.
This is also a pro-environmental project. Every time you borrow a book, your personal credits in the platform increases. When the credits reach a certain value, you can exchange a sapling and plant it, contributing to the city's natural environment.
Through book-sharing platform, books are transported from one place to different cities, facilitating cultural exchange and dissemination.