Liu Yong (1719-1804), a Confucian, is called Shi' an, and there are other nicknames such as Qingyuan, Xiang Yan, Wu Dong, Mu An, Huaying, Taoist Riguanfeng, and posthumous title Wenqing. Painters, politicians and officials in the Qing Dynasty were all honest officials. Liu Yong basically inherited his father Liu Tongxun's integrity, ability and high efficiency, and tried his best to rectify the disadvantages accumulated in the imperial examination and the bad habits in officialdom. People marveled at Liu Yong's character and compared him with Bao Zheng in Song Dynasty.
Liu Yong is not only a politician, but also a famous calligrapher and master of calligraphy. He is known as one of the four great calligraphers in the Qing Dynasty (the other three are Prince Cheng, Weng Fanggang and). In the Qing Dynasty, Xu Ke praised Liu Yong: "Wenqing calligraphy is comparable to the voice of Huang Zhong and Lu Da, the instrument of clearing the hall and clearing the hall, and it has been promoted to the crown of a generation of calligraphers.