Others support this post, saying that it was written by Zhao, and there are also supplementary books and inscriptions.
First of all, this is a rare calligraphy work. Different from Zhao's soft and mellow lower case style. This case is purely based on strength. It is said that Zhao Mengfu was inspired by a work in the Tang Dynasty.
Zhao's calligraphy went straight into the Jin and Tang Dynasties, and he copied the lower case letters that can be better understood in this article. You can also refer to Chu Suiliang, Ou Yangxun and other small letters of Tang Dynasty, such as Ling Fei Jing and Dunhuang Jing, which are also of great reference significance.
To learn from Zhao Mengfu is to learn from Jin and Tang Dynasties. Master the statutes first.