What is the word to describe "good calligraphy"?

1. Full of pen power: pen and ink are used freely and fully. Describe calligraphy and poetry. ?

2. The pen moves the dragon and snake: the dragon and snake jump into the pen. Describe the vigorous and free brushwork of calligraphy. Also for the conductor. ?

3. I first wrote Huangting: Huangting: Taoist classic Huangting Jing, and Jin people have Huangting Jing in small letters. In the old days, there was an idiom to comment on calligraphy: "Writing Huang Ting at first is just right". Later, the metaphor was just right. ?

4. Spring earthworm and autumn snake: metaphor for poor calligraphy, bending like the trajectory of spring earthworm and autumn snake. ?

The sword has been drawn and the bow has been drawn. Describe the situation as tense and explosive. Later, it also refers to the vigorous and magnificent calligraphy.