Liu Gongquan is the summarizer and innovator of regular script style. On the basis of studying and inheriting the regular script style of Zhong Yao, Wang Xizhi and others, he read modern calligraphy, studied Yan Zhenqing, incorporated his own new ideas, and created his own style. He created the unique "Liu style" regular script, which served as a model for generations to come and became one of the outstanding representatives of "Tang calligraphy". Liu Gongquan's calligraphy is balanced, thin and hard, and he pursues the Wei stele with decisive force. His stipples are crisp and straight, his bones are strong and his body is tight. "The more expensive the calligraphy is, the thinner and harder it is, the more it can communicate with the spirit." His regular script is slightly more even, thinner and harder than his Yan style, so it is known as "the muscles of the face and the bones of the willow".
When people start learning calligraphy today, they still prefer calligraphers such as Yan, Liu, Ou, Chu, and Yu of the Tang Dynasty. In particular, the set of regular script norms established by Liu Gongquan is still a model for people to learn from today. Liu Gongquan made outstanding contributions in the reform and development of calligraphy art. He summarized the development of calligraphy in the Tang Dynasty and laid the foundation for the development of regular script as a whole.