How to shoot a documentary about writing brush?

Shoot the calligrapher's process of using a brush. Calligraphers splash ink with a brush, shooting the details of the brush from all aspects, and photographers take pictures synchronously, giving the brush an all-round close-up. After the editing is selected, it becomes a brush documentary. Documentary is a window to the world. Children can watch the world and the starry sky at home and learn about humanities, history, geography, nature, art and other disciplines through vivid images.