The most important and prominent calligrapher in the late Tang Dynasty - Yan Zhenqing. Yan Zhenqing first learned from Chu Suiliang and later from Zhang Xu. He also learned the characteristics of the four schools of early Tang Dynasty, and incorporated the styles of seal script and Northern Wei Dynasty. He completed the creation of vigorous and broad Yan style regular script and established a model of regular script in the Tang Dynasty.
His regular script is contrary to the calligraphy style of the early Tang Dynasty. He uses seal script to transform thin and hard into plump and powerful. The structure is broad and majestic, and the bones are strong and majestic. This style also embodies the great spirit of the times. The prosperous demeanor of the Tang Dynasty is consistent with his noble personality. It is an example of the perfect combination of the beauty of calligraphy and the beauty of personality. His calligraphy style is called "Yan style", and together with Liu Gongquan, he is called "Yan Liu", and he has the reputation of "Yan Jin Liu Gu".