Yan Liu's and Yan Liu's calligraphy are both powerful, but their styles are different. Also known as excellent calligraphy.
In addition, Yan Zhenqing: the font is vigorous and vigorous, the bones are vigorous and dignified, the brushwork is tortuous and powerful, and the inside is strong and the outside is warm and moist.
Liu Gongquan: The font is balanced, thin and hard, the stippling is crisp and beautiful, and the bones are healthy and tight.