According to Phoenix.com Financial News, on August 8th, in the "SAIF Financial Forum – Financial Technology and Digital Currency in the AI Era" held in Shenzhen, Li Lihui, former head of the Bank of China and head of the China Internet Finance Association blockchain working group, said Whether digital currency can replace the all-pass form and replace the emerging form of money will depend on four key factors. First, the efficiency is higher. Second, the cost is lower. Third, there must be a scale of the corresponding price. Fourth, the reliability and security of social recognition. Li Lihui believes that the legal digital currency in the retail rental market does not have the absolute advantage of replacing emerging electronic payment methods such as Alipay.