Is it better to write about Qing Dynasty or Yi Dan?

Yidan writes very well. In order to help children understand the characteristics of writing brush, which is a part of Four Treasures of the Study, Yidan Calligraphy Group specially recorded a video of calligraphy lecture, which is helpful to improve children's understanding of writing brush. Different brushes are suitable for different fonts, pens with different characteristics write different lines and so on.