Liu Gongquan

Liu Gongquan (simplified Chinese: 柳公权; traditional Chinese: 柳公權; pinyin: Liǔ Gōngquán; Wade–Giles: Liu Kungch'üan), courtesy name Chengxuan (誠懸) (778—865), was a Chinese calligrapher, essayist, and politician who lived during the late Tang dynasty. Liu Gongquan was especially famous for regular script (楷書) and was one of the 4 calligraphic masters of regular script in China. The other three were Yan Zhenqing, Ouyang Xun and Zhao Mengfu.