"Reporting to my father, I think this should be the case." Zhu Gaochi nodded and smiled, "Although I haven't seen the currency before the Northern Wei Dynasty, as far as I know, shells were used as currency in ancient times, and in the Han and Tang dynasties, shells were used as currency. In the Song and Yuan Dynasties, Jiaozi and paper banknotes were popular, and now in the Ming Dynasty, precious banknotes and copper coins are used in parallel, and the copper coins are generally similar to those in ancient times, but there is always a theory for others.”

"Jiang Xinghuo's choice of this angle is rather peculiar."

"Wealth and goods together." Zhu Di said thoughtfully, "I see that you seem to know a lot."