During the Daguan period of the Northern Song Dynasty, the currency was the Daguan Tongbao copper coin

"Daguan Tongbao" is an era name coin minted by Emperor Huizong Zhao Ji of the Northern Song Dynasty during the Daguan period (1107-1110 AD). It has various layouts such as Xiaoping, Folded 2, Folded 3, Folded 10, etc. The Da Guan Tong Bao currency of the Northern Song Dynasty was inscribed by Emperor Huizong. The Song Dynasty was different from previous dynasties in that new coins were minted with each new era name. If the era name matched the inscriptions, non era coins were minted even more. In the three hundred years of the end of the Song Dynasty, small flat coins were mainly used for folding two coins, and there were also large coins circulating during this period, with the outline of the coins having certain standards for size. Rare throughout history, in addition to genuine, cursive, clerical, and seal script, there is also the thin gold body of the "jade drawn silver hook" of Emperor Huizong of the Northern Song Dynasty.