great calligraphy
Yan jingliugu, a Chinese idiom, Pinyin is y á NJ ī ngli ǔ g ǔ, which means that the calligraphy of Yan and Liu families is vigorous and powerful, but the style is different; it is also called excellent calligraphy, the same as "Yan Jin Liugu". It comes from the bachelor's degree of sacrifice to stone.
The origin of Idioms
Fan Zhongyan of the Song Dynasty wrote in his book the bachelor's literature of sacrificing stone: "man Qing's pen, Yan Jing Liu Gu, scattered in the world, treasure is a divine thing."
Idiom usage
It refers to calligraphy.
great calligraphy
stamp one 's feet and beat one 's breast - dùn jiǎo chuí xiōng