Xie Invitation: Zhao Mengfu's calligraphy in Yuan Dynasty is rigorous in statutes, beautiful in fonts, fluent in brushwork and unique in style. Historically, Zhao was almost as famous as Yan, Liu, Ou and Zhao, and was later called' Yan, Liu, Ou and Zhao'. Zhao Shu is an example for the two kings to follow, and is recognized as a true biography of the two kings. His famous calligraphy saying:' Calligraphy is based on writing with a pen, and it also requires labor to write words. It is not easy to write with a pen through the ages. It is not difficult to see Zhao Mengfu's profound understanding of calligraphy from Zhao Mengfu's On Books. Zhao Mengfu can be said to be a master of traditional calligraphy, from Zhao's Biography of Han Ji 'an, to the running script "Luo Shenfu" and "Four Books of the Right Army", all of which embody the essence of traditional calligraphy.

During the Ming and Qing Dynasties, Zhao Mengfu's calligraphy was praised and criticized. The postscript of Wen Jia in the Ming Dynasty said:' Publishing ancient books is Xi Zhi, so we can adopt the beauty of all and achieve great calligraphy.' Among them, it affirmed the positive significance of the fellowship, and Qiu commented:' Zi Ang's calligraphy is moist and elegant, far from the right army's positive pulse, and it is delicate at first'. Bao Qing Chen Shi commented on Zhao Shu's "smooth brushwork, even stippling and no difference in font size". In history, Zhao Mengfu's calligraphy was praised and criticized differently, but in the history of China's calligraphy, Zhao Mengfu deserves to be regarded as a great calligrapher who links the past with the future.