About this 3D model

This is like this Tinkercad https://www.tinkercad.com/embed/dw4FJptPb3X?editbtn=1 这是一个桌面读书支配器，它可以让你的书在桌子上以45°的姿势站立，解放你的双手，便于你的阅读姿势，它更适合给学生用，谢谢 This is a desktop book reader, which allows your book to stand on a table in a 45° position, liberating your hands, and facilitating your reading posture. It is more suitable for students, thanks