What are the characteristics of Zhong You's calligraphy?

Regarding the characteristics of Zhong You's calligraphy, Liang Wudi once described it as "a cloud crane swimming in the sky and playing in the sea, with dense lines, which is really sad". Zhang Huai said: "There are many differences between stippling and painting. It can be described as deep and boundless, and quaint. " Zhong You's calligraphy is characterized by profundity and elegance.