Liu style is Liu Gongquan
Liu Gongquan (778-865), courtesy name Chengxuan, was a native of Jingzhaohua in the Tang Dynasty. He rose to the rank of Crown Prince and Grand Master, and was known as "Liu Shaoshi" in the world. . Since he was also named the Duke of Hedong County by the emperor, later generations also called him "Liu Hedong". He was the successor of Yan Zhenqing. Later generations called them "Yan Liu" and became a model of calligraphy in the past dynasties. Together with Zhao Mengfu, Yan Zhenqing and Ouyang Xun, they are collectively known as the "Four Great Calligraphers". Yan Ti is a calligrapher of the Tang Dynasty, Yan Zhenqing (709-785). The courtesy name is Qingchen, a native of Jingzhao Wannian (now Xi'an, Shaanxi), and his ancestral home is Langya Linyi (now Linyi, Shandong). Shushi is also called Yan Lugong. He is an upright person. An innovator of calligraphy in the Tang Dynasty, he set a banner for calligraphy in the prosperous Tang Dynasty. Yan Zhenqing studied calligraphy since he was a child, and was taught by Zhang Xu himself. He also learned from Cai Yong, Wang Xizhi, Wang Xianzhi, Chu Suiliang and others, integrated them and developed them to form a unique style. His regular script has a square and dense structure, light horizontal strokes and heavy vertical strokes, strong and round strokes, and a solemn and vigorous momentum. He is known as "Yan Ti". His cursive writing is full of conciseness and simplicity, and together with Liu Gongquan, he is called "Yan Liu", which means "Yan Jin Liu Gu".
Yan Zhenqing opened up a new and magnificent realm of calligraphy: in terms of characteristics, the appearance, body shape, strictness of the law, and majestic momentum are unprecedented. From an aesthetic point of view, dignified beauty, masculine beauty, and artificial beauty all go hand in hand in the face and body, and You set the standard for future generations. From the perspective of the era, the early Tang Dynasty inherited the remnants of the Jin and Song Dynasties and failed to stand on its own. As soon as the Yan style emerged, the new style cast by the Tang Dou Tan became one of the distinctive features of the prosperous Tang Dynasty.