Since then, Liu Gongquan has worked hard to practice calligraphy, grinding thick cocoons on his hands and mending his elbows layer by layer. He learned the beauty and richness of Yan style, the openness and elegance of European style, the boldness and boldness of calligraphy and painting soup, and the elegance and charm of palace style. He often watches others pick sheep from cattle and study the skeleton structure, from which he gets inspiration. He also observed wild geese in the sky, fish swimming in the water, running elk and runaway wild horses, and integrated all kinds of beautiful forms of nature into calligraphy art.
Liu Gongquan eventually became a famous calligrapher in Tang Dynasty in China. His word structure is rigorous, rigid and flexible, generous and open, which is cherished by the calligraphy world and is known as "Yan Liu Jin Gu". But Liu Gongquan was still very dissatisfied with his calligraphy until he was old. In his later years, he lived in seclusion in the stork valley (now called Liugou) in the south of Huajing City, specializing in calligraphy and diligently practicing calligraphy until his death at the age of 88.