Jianguo Fei, Vice President of Ant Financial and head of the technical laboratory, said that virtual currencies such as Bitcoin are just one type of application of blockchain technology. The value of blockchain is not in the issue of coins, but in the establishment of trust and synergy. Solving social problems. The transparent and traceable and immutable characteristics of blockchain technology have greatly reduced the cost of social trust and improved the efficiency of society. In the future, blockchain will change people's production and life like mobile payment and become the infrastructure of the digital economy.