According to the China Securities Journal, after the "carnival" on the 28th, the market's investment enthusiasm for the blockchain concept has cooled. On the 29th, the concept of blockchain in the Hong Kong stock market went out of the market. As a result, the Hong Kong stock market information technology sector changed from leading on the 28th to leading the decline. Analysts said that the outbreak of the blockchain concept will help to increase the market preference of technology stocks. Short-term fluctuations are normal; from the perspective of long-term investment, blockchain is worth tracking, and investors' focus can be placed on blocks. Chain companies have a cooperative nature of listed companies.