Zhao Ji (1082～1135), also known as Song Huizong, reigned from 1101 to 1125. He was a mediocre emperor in politics, but he was quite successful in calligraphy and painting. He presided over the compilation of "Xuanhe Shupu" and "Daguan Tie", etc., which had a great influence on later generations, and his books created the "thin gold style". "Book History Hui Yao" says: "Huizong's cursive calligraphy is vigorous and elegant. He first learned from Xue Ji, changed his method, and called himself Shou Jin Shu. It is natural to express one's intention, and it cannot be achieved through traces." However, judging from the existing calligraphy, Its "Thin Gold Book" mainly comes from Xue Yao's "Preface to You Shi Cong". Xue Shu is more casual, while Zhao Ji Shu is very refined and standardized. Zhao Ji's works include Zhencao's "Thousand-Character Essay" and "He Fang's Poems".