Song Huizong and Evonne are not only good at painting, but also have high attainments in calligraphy. On the basis of learning from Xue Yao and Chu Suiliang, Evonne's calligraphy has created a unique "thin gold body", which is thin and smooth, with one side like bamboo, and complements his meticulous painting. Thin gold book refers to its gold, wealth and righteousness, and also boasts of its strength. Zhao Ji has many calligraphy works handed down from generation to generation. All kinds of calligraphy works, such as Kai, Xing and Cao, remain in later generations, with vigorous and elegant brushwork and distinctive personality. Among them, Square Calyx Poetry is a masterpiece of Bo Jin Shu with sharp brushwork and elegant style.