It seems that you are very attentive!
It seems difficult to get everything from Weibei, so I can only help here. .
I guess you are a calligraphy lover, too? In fact, it is very important to choose a good writing brush. You can find this article to read Top Ten Brush Brands in China (with brush selection and maintenance methods). , which introduces some easy-to-write brushes and how to choose and maintain them. The correct holding posture of the brush is attached. I hope it helps you ~