When you go to an interview for the first time, you should dress appropriately first, and then, because you may try to give a lecture, you should generally prepare materials for the lecture, such as writing a word or a stroke.
Then we should pay attention to the interaction with the interview teachers, treat them as students, ask them questions and enliven the classroom atmosphere.
Also, we should pay attention to expanding some knowledge, such as Four Treasures of the Study and the history of calligraphy. Of course this depends on our own situation. Don't force it.
If you want to know more about Four Treasures of the Study, you can find this article and read "Top Ten Brush Brands in China (with Selection and Maintenance Methods of Brush)". I hope it helps you, and I wish you a successful interview!