Hard pen calligraphy test grade 8- 10 means copying brush copybooks. Does anyone know the details?

It means this. 8- 10 is advanced, and the request has been handed down. Of course, because of the teacher or something. ....

To put it bluntly, find yourself a law post, familiarize yourself with this paragraph, and then recite it. Hard-pen calligraphy grading is not particularly demanding for copying with a brush, and it will pass by then.