What is Ouyang Xiu's calligraphy idea?

Ouyang Xiu's calligraphy thought was especially inherited and developed by Su Shi. His calligraphy, according to himself, was learned from the tablet of Confucius Temple in Shinan in his early years, and later he "learned the brushwork of (Li) calligraphy, but the words are by no means the same". He admired Liu Gongquan's calligraphy, especially Yan Zhenqing. His calligraphy style is broad, his strokes are open, and he pays special attention to bones and muscles. Su Shi praised him for "using sharp pen and dry ink to make square and wide characters, making them colorful and moist", and praised him for "bold brushwork and beautiful fonts". The ink paintings that have been handed down to this day include Ouyang's Preface, Historical Records and Postscript, Shangen Tie, and Jushi Tie. His calligraphy, except the preface to Ouyang, is a little cursive, and the rest are regular script, with dignified, rigorous, vigorous and meticulous font.