Yan Zhenqing (August 23, 709-784), a famous politician and calligrapher in the Tang Dynasty, was born in Linyi (now Linyi, Shandong). Yan Shigu V was a disciple of Sun [1] and Yan Gaoqing. Yan Zhenqing founded the "Yan Ti" regular script Yan Zhenqing's calligraphy pen is fat and stupid, frustrated and uncomfortable. The "flying white book" of cutting-edge calligraphy art is not obvious in Yan's family; In the Eastern Jin Dynasty, Mrs. Wei wrote "Bi Tan": "Those who are bony and fleshy are called, and those who are fleshy are called". However, although Yan's calligraphy is full of dignity and respect, it is definitely not the so-called "Mo Zhu". His regular script is full of bones and muscles, vigorous, powerful and magnificent, which has set a new trend for a generation. If there is anyone in China who can compete with Wang Xizhi, it is only Yan Zhenqing who has this prestige and influence. , together with Zhao Mengfu, Liu Gongquan and Ou Yangxun, are called "four masters of regular script". Together with Liu Gongquan, they are called "Yan Liu" and "Yangu".