On December 15, Zhu Yan, Dean of the Internet Industry Research Institute of Tsinghua University, said in an interview that the core of blockchain is to solve credible problems. In his opinion, no industry needs a credible ecological environment, and the blockchain is more than traceability, certification, and decentralization. But wherever a credible ecological environment is needed, the advantages of the blockchain need to be brought into play. So far, the development of the consumer Internet has been 25 years. The core of the blockchain is to promote the establishment of a trusted society.