2 sentences

1. 他拿起毛笔，在纸上挥毫。

   tā ná​qǐ máo​bǐ, zài zhǐ shàng huī háo.

   He picked up the brush and wrote calligraphy with a flourish.

   Source: Dong Chinese Dictionary

2. 写毛笔字的时候，要特别注意如何运笔。

   xiě máo​bǐ zì de shí​hou, yào tè​bié zhù​yì rú​hé yùn bǐ.

   When doing calligraphy, you must pay special attention to how you use the brush strokes.

   Source: Dong Chinese Dictionary