The closed operation of funds means that the funds after financing come in are earmarked under the supervision of special accounts! It cannot be withdrawn as cash, and cannot be transferred to other projects or other purposes without authorization! It can also be understood that after the fund company raises money, it will operate in a closed manner, so that the basic people will not be allowed to make additional investment in this money, nor will they be allowed to withdraw it in advance! (This is the fund type seen on the trading software of securities companies! It is a fixed fund size! What changes is only the total market value and total assets, but the fund share remains unchanged!