What useful teaching videos of brush calligraphy are there?

I recommend many open teaching videos recorded by teachers from Chen Zhongjian, Bao Dao, including many works by Wang Xizhi, Zhao Mengfu and Shen. It is constantly sought after by mainland scholars and is also a model in the industry. Teacher Chen is humorous, and watching the teacher's video will not be boring. He can see the teacher's brushwork from two angles. This is great. It can be said that he is teaching at the primary stage. The teacher's ability to stick to his post is really profound. He writes without hesitation and decisiveness, talking and writing. This is really hard to get, so I think it is an excellent introduction to learning brush calligraphy.