Emperor Huizong of the Song Dynasty, the controversial emperor of the Northern Song Dynasty, an artistic emperor who combined calligraphy, painting and poetry, directly led to the later "Shame of Jingkang" and the demise of the Northern Song Dynasty. Today we can only know him from these coins minted in the Yushu (thin gold body) that have been preserved for hundreds of years. In the Northern Song Dynasty coins, Daguan, Xuanhe, Shengsong, and Chongning are all forms of calligraphy with thin gold bodies, according to historical records, thin gold bodies were created by Emperor Huizong of Song, and were written and minted in the copper coins in circulation by Emperor Huizong of Song, so to this day, we can still appreciate the characteristics of this form of calligraphy. The so-called "heavenly bones are beautiful, fun and misty", with a strong personality color, the so-called "such as bending iron and breaking gold".