According to online reports, the Shanghai Stock Exchange officially released supporting business rules such as the "Guidelines for Self-Regulation of Listed Companies on the Science and Technology Innovation Board No. 5-Science and Technology Innovation Growth Level". It is proposed to strengthen investor appropriateness management. This reform does not add a new investment transaction threshold for individual investors to participate in stock trading at the growth level of science and technology innovation. It is still necessary to have the capital threshold and investment experience of "500,000 yuan in assets +2 years of experience". In addition, according to the requirements of the "Science and Technology Innovation Board Opinions", investors need to sign a special risk disclosure letter before investing in newly registered unprofitable technology-based enterprises at the science and technology innovation growth level.