Economist Lang Xianping said on the Finance and Economics Langye program yesterday: "Why research digital currency now? For example, China has always been ahead of the world in the payment system, so we first introduced digital currency as an indicator. But Do n’t have any doubts about the digital currency of the central bank, because it is completely different from the virtual currency. First, the digital currency of the central bank has an endorsement of government credit, and virtual currency does not. Second, the digital currency of the central bank is “centralized” Currency is "decentralized", so these two differences are destined to be different. In addition, it said that China is not the first to be a national digital currency, and the reason for the failure of digital currency in some countries is simple — -The circulation is too small.