Calligraphy style copybook pen

Hello, this is the book club. Yan Ti refers to the calligraphy of Yan Zhenqing, a great calligrapher in the Tang Dynasty. The momentum is magnificent and the atmosphere is rich. The more classic ones are regular script (multi-pagoda) (ritual monument) and running script (nephew's watch) (competing for seats), but they are all written with a brush. Hard-pen copybooks are rare in the market. If you have to learn, you can refer to the brush. Haha, I'm learning facial style.