Idioms describing writing brushes

Strong and powerful dragon and snake at the bottom of the pen, Mo Miao with fine pen, dragon and snake at the pen, phoenix with silkworm head and tail, hiding its head and protecting its tail, sinking happily, settling happily, learning graffiti, ups and downs, Ding Zhenkai grass, Ding Zhenyong grass, flying dragon and dancing phoenix, full of strength, phoenix drifting, phoenix dancing dragonfly, phoenix flying back, ancient fat today barren, phoenix flying back. ...