What is the reason that Chen Bi's calligraphy is catching up with Ou Yangxun, and gradually forcing out the Wang Mausoleum?

Chen Bi studied calligraphy from Song Ke, and the official calligraphy chased Ou Yangxun, gradually forcing Wang Daling to use cursive script. Cao Zhang has ancient meaning and seal script has personality. Among all the poses he can do, cursive script is the most accomplished, which is called "self-narration from Huai Su" in the history of book continuation. The cursive scripts handed down from ancient times, such as Lin Zhang Xu Qiu's "Deep Post" and "Axis of Five-character Ancient Poems", are similar to Song Ke in brushwork, but richer and more plain in wording, composition and momentum. Compared with Song Guang in the "Three Song Dynasties" period, his cursive level should be broad, while Song Guang was good at skilled action. Chen Bi not only has these qualities, but also the vigorous brushwork and flying spirit permeated in his works is unexpected by Song Guang.