1, Function and Performance: BBK is an intelligent learning tool specially designed for students, with rich learning functions, such as e-book reading, voice reading and online learning resources. You can also carry out learning assistance functions such as class notes and homework management. Reading Lang has a simple function and mainly provides e-book reading function.

2, user experience: BBK pays attention to user experience, simple and friendly interface, easy to operate, suitable for students to use. It also supports the cloud synchronization function, which can synchronize learning materials and notes to the cloud, making it convenient for students to study anytime and anywhere. The user experience of reading aloud is weak, and the interface design and operation mode are outdated.