Which dynasty was Liu Gongquan a calligrapher?

Liu Gongquan is a calligrapher in the Tang Dynasty, known as the "sage of calligraphy" and one of the famous calligraphers in the Tang Dynasty. His calligraphy style is unique and he is proficient in official script, regular script, running script and cursive script, especially cursive script and regular script. His cursive script is unique, natural and unrestrained, unrestrained and highly accomplished, and is deeply loved and respected by future generations. His regular script is also deeply loved by the world. He is proficient in all kinds of strokes and structures, especially in inscriptions. He is known as the "Monument Master". Liu Gongquan's calligraphy art has a far-reaching influence, which not only affects the development of calligraphy art in Tang Dynasty, but also has a far-reaching influence on calligraphy art in later generations.