Article 6.5. 13 of the Guidelines for the Standardized Operation of Listed Companies in Shenzhen Stock Exchange (revised in 2020) stipulates that listed companies can carry out cash management on temporarily idle raised funds, and the term of their investment products shall not exceed 12 months, and the following conditions must be met: ① high security, meeting the capital preservation requirements, and the product issuer can provide the capital preservation commitment; ② Good liquidity does not affect the normal operation of the raised funds investment plan. Investment products shall not be pledged, and the special settlement account for products (if applicable) shall not be used for other purposes. The company shall announce the opening or cancellation of the special settlement account for products in a timely manner.