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 in the middle, with heavy strokes and strong centrality, which adds to his magnificent, round and rich aesthetic feeling.
Liu's body and pen are vigorous, and he is known as "Yan Gu". The world's evaluation of this monument ("Shence Army Monument") is the first wonderful trace of his life.
European calligraphy, which is dignified, incisive but not rigid, tight, rigid but not cramped, is the result of innovation from Han Li and the regular script in Wei and Jin Dynasties.
Zhao Ti calligraphy, created by Zhao Mengfu in Yuan Dynasty, is round and beautiful, and later praised by Emperor Qianlong of Qing Dynasty. Zhu Yunming, Wen Zhiming and Dong Qichang are the most famous calligraphers in the Ming Dynasty, and their running script styles are simple.
I suggest learning from Yan Zhenqing.