Yan Zhenqing's regular script has a solemn and majestic style. His pen is horizontal and light, vertical and heavy, and his brushwork is vigorous. Structurally, it is square and dense. The vertical pen is slightly curved in the middle, soft and elastic, with thick strokes and strong centrality, which adds to his magnificent, mellow and rich aesthetic feeling.
Liu's body and pen are vigorous, and he is known as "Yan Gu". The world commented that this monument "is the first miracle in his life, with a clean and upright atmosphere and a gentle attitude."
European calligraphy is dignified, sharp but not rigid, tight but rigid but not narrow, which is the result of Han Li and Wei-Jin regular script innovation.
Zhao Ti calligraphy, created by Zhao Mengfu in Yuan Dynasty, is round and beautiful, and later praised by Emperor Qianlong of Qing Dynasty.
Ou, Yan, Liu and Zhao are called the four masters of regular script.
Ou is a man, a regular script writer in Tang Dynasty.
Yan is Yan Zhenqing, a regular script writer in Tang Dynasty.
Liu, a regular script writer in Tang Dynasty, Liu Gongquan.