In stead of imported bronze coins, Eirakusen, from the Ming Dynasty, the shogunate government established the coinage guild to mint domestic coins such as Kanei Tsuho coin for the circulating money in the country.
そして輸入品であった永楽銭などに代わり、銭座を設けて寛永通宝などの国内貨幣を鋳造し、流通させた。