On December 3, China News Network published an article "Invest With Care! Hundreds of listed companies claim to have a blockchain, and some people are pushing for hot spots. " The article pointed out that at the end of October, stimulated by the good news of the blockchain policy, the A-share market once experienced a daily limit of nearly 100 blockchain concept stocks. The market is carnival, with tens of billions of funds entering the market, and even some listed companies with operating problems and delisting risks are also under strong speculation. Investors follow the trend to "embrace" blockchain concept stocks, and listed companies also want to have a relationship with the blockchain, which has become a busy job for the directors of listed companies. For example, in addition to the formal announcement, it is also necessary to frequently respond to blockchain issues on SSE Interactive and Shenzhen Stock Exchange. At present, there are thousands of questions and answers about "blockchain" keywords on the interactive platforms of the two exchanges. According to rough statistics from several media, as of now, hundreds of listed companies have claimed to have a direct or indirect relationship with the blockchain. He Baohong, director of the Institute of Cloud Computing and Big Data of the China Academy of Information and Communications Technology, told reporters, "At present, blockchain is in the early stages of industrial application development, and related concept companies have basically just done some research, exploration and small experiments in this area. It is difficult to produce actual benefits, or even a loss, which is a typical hype. "