Yan Gu means that both calligraphy are quite powerful, but their styles are different; Also known as excellent calligraphy. Yan and Liu refer to Yan Zhenqing and Liu Gongquan, famous calligraphers in the Tang Dynasty. Their fonts are called Yan Ti and Liu Ti. Yan is vigorous and powerful, and Liu Tigao is graceful and restrained. Words like Yan and Liu are vigorous and powerful. It is also used to praise other people's calligraphy works. Also known as "Six Valley Yanjin" and "Playing Ancient Yanjin".
From Fan Zhongyan's "Bachelor of Sacrificing Stones" in Song Dynasty: "Man Qing's pen, Yan Gu." Synonym: Yan Gu Liu Jin. Usage of idioms: as object and attribute; Calligraphy. Example: Surprise at the Second Moment Volume II: This book is full of bones and muscles, and there is nothing against it.
Yan Zhenqing's regular script, which embodies a prosperous style, is called "Yan Ti" by later generations. When people talk about Yan Shu, they often point out that its most obvious characteristics are "swallow-tailed silkworm head" and "horizontal light and vertical weight", which gives people the feeling of penetrating the back of the paper, produces the artistic effect of brushwork, and gives people the artistic characteristics of heavy feeling and relief beauty.
Introduction to Yan Zhenqing:
Yan Zhenqing (August 23, 709 -784) was born in Jingzhao Wannian (now Xi 'an, Shaanxi) and Linyi (now Linyi, Shandong). Yan Shigu V, the secretary supervisor, is a grandson, and Situ Qing is his younger brother, a famous official and calligrapher in the Tang Dynasty.
In the 22nd year of Kaiyuan (734), Yan Zhenqing became a scholar and served as a supervisor in the temple. Later, because he offended Yang, the powerful minister, he was demoted to be the prefect of the plain and was called "Yan Plain" by the world. During the Anshi Rebellion, Yan Zhenqing led a crusade against the rebels. Later, he went to Fengxiang and was made a minister. When Tang Daizong was an official, he went to the official department of Shangshu Province, and a prince and a surname named him Duke Lu, which was called Duke Yan Lu in history.
In the first year of Xingyuan (784), he was sent to tell the rebel Li Xilie that he refused the thief in awe and was finally slapped to death. After he was killed, Cao's heirs and soldiers of the three armed forces cried. Posthumous title Si Tuleideng, posthumous title "in the text".
Yan Zhenqing's calligraphy is exquisite and good at it. Chu Suiliang, a beginner, studied under Zhang Xu and got his brushwork. Its regular script is dignified and majestic, and its running script is vigorous and powerful, which has created a "Yan style" regular script and has a great influence on later generations. Together with Zhao Mengfu, Liu Gongquan and Ou Yangxun, they are also called "four masters of regular script". Together with Liu Gongquan, they are called "Yan Liu" and "Yangu".