Knife coins: Zhao, Qi and Yan \ x0d \ x0d \ cloth coins: Zhao, Wei and South Korea \ x0d \ ring coins: Qin, Wei \ x0d \ ant nose coins: Chu \ x0d \ x0d \. \x0d "cloth coin" refers to the _ (money, shovel)-shaped copper coin popular in Zhou, Zheng, Wei, Han, Zhao, Wei, Yan, Chu and other countries. \x0d\ "Huanqian \" refers to the black copper coins popular in Qin, Zhou, Han, Zhao, Wei, Yan, Qi and other places \x0d\ "ant nose coins (turtle shells) \" refers to the copper coins popular in Chu. \x0d\\x0d\* In fact, the currencies of some countries are universal, such as cloth coins and ring coins. . \x0d\\x0d\◎ Material: All countries in the Yellow River Basin are copper coins, and the tortoise shells of Chu have gold coins besides copper coins with high tin content.