Mr. Guo Moruo's calligraphy style is that the words are like people, the strokes are euphemistic and the style is refined. This work well reflects his calligraphy style, and some of Su Shi's styles are influenced by Wang Xizhi's running script.
Guo Moruo did do a lot of disgraceful things in the latter half of his life, almost obliterating most of his "achievements" in the first half, but he is still a calligrapher with great achievements in calligraphy, and his original works should be valuable.