"Rib" refers to the brush used for face and body, which is powerful, full and tough in appearance, full and round, open and close, magnificent and free and easy.
"Bone" is used to describe Liu's clear strokes, rigorous skeleton and upright character.
The regular script written by Yan Zhenqing and Liu Gongquan was called "Yan Ti" and "Liu Ti" in history, and later it was called "Yan Gu", which came from Fan Zhongyan's "Bachelor of Sacrificing Stones" and was called "Man Qing's Pen, Yan Gu".
The combination of face and body takes the ancient method, "eight points" and takes the momentum before, so the posture is dignified, graceful, open and uniform. Influenced by Ou Yangxun, Liu Ti adopted the technique of "two kings" and "north monument", which was steep and fantastic. Strict structure, accurate statutes, central connection and strong tension.
The pens used for facial body are steady and powerful, mostly round, and the momentum between pens is coherent. Most horizontal paintings are light, vertical paintings are heavy, and the pen is collected in a long horizontal painting, and the pen is "dovetail-shaped". Liu Ti's twists and turns in his pen, his frustration in horizontal painting and his efforts to turn the pen into the front are all in line with Yan's style. But in terms of brushwork, he is more willful and indulgent, angular.
Yan Zhenqing (August 23, 709-784), whose real name was Chen Qing, alias Xianmenzi, alias Fang Ying, was born in Jingzhao Wannian (now Xi City, Shaanxi Province), originally from Linyi (now Linyi City, Shandong Province). Yan Shigu V was a famous official, calligrapher and secretary supervisor in the Tang Dynasty. He was once a famous painter such as Sun and Situ.
Liu Gongquan (778-865), the word is sincere. Jingzhao Garden (now Yaozhou District, Tongchuan City, Shaanxi Province) was born. In the mid-Tang Dynasty, he was an official, calligrapher and poet, and he was the younger brother of Liu Gongzhuo, a senior minister of the Ministry of War.