What are Huang Tingjian's calligraphy posts?

Huang Tingjian, Lu Zhi, Tianqiao Road. Valley; (Together with Su Shi, Mi Fei and Cai Xiang, they are called the four great masters of the Song Dynasty)

I admit that I didn't get a pen before I was 49.

Masterpiece:

Running script "Songfengge"

Cursive script "all posts"

The world is full of smoke and clouds, and flying flowers fall.