The types of banknotes issued in the Qing Dynasty were complex, including official banknotes and private banknotes. Official banknotes were issued by government financial institutions, while private banknotes were issued by private financial institutions. Banknotes can also be divided into copper coins (which can be There are four types: copper coins with square holes), copper dollar tickets (can be exchanged for copper coins), silver coins (can be exchanged for silver), and silver dollar tickets (can be exchanged for silver dollars). The issuance of banknotes begins with treasury silver reserves and banknote certificates.