On October 19th, Li Yuanhui, former president of the Bank of China and member of the NPC Financial and Economic Committee, talked about digital currency at the 2019 Financial Reform and Innovation Forum. He said that digital currency will reconstruct the financial model and the existing economic system. This is the future challenge. And opportunities. For the challenge that digital currency may pose to the existing monetary system, he sums it up in three ways. First, digital currency can cross the central bank and establish national sovereignty. The second is the hegemonic status of the repeating currency. Third, digital currencies will form a financial system that spans commercial banks.