When managing and operating fund assets, the fund manager shall not invest the fund in other funds; Do not use funds that do not belong to the fund name to buy or sell securities; Shall not engage in any form of securities underwriting or self-operated securities business other than bonds with the manager's own funds; Do not use bank credit funds to engage in fund investment; Shall not engage in securities credit business; Fund assets shall not be used for mortgage, guarantee, capital borrowing and loans; Shall not engage in securities credit transactions, and shall not use fund assets to invest in real estate; Do not engage in investments that may make the fund assets bear unlimited liability; Fund assets shall not be invested in securities issued by companies that have an interest in the fund custodian or fund manager; Insider trading, market manipulation or related party transactions are not allowed to harm the interests of fund holders.