legal ground
Article 65 of People's Republic of China (PRC) Securities Investment Fund Law
The subscription, redemption and registration of fund shares of open-end funds shall be handled by the fund manager or the fund service institution entrusted by him.
Article 66
The fund manager shall purchase and redeem the fund shares every working day; If there are other provisions in the fund contract, those provisions shall prevail.
The investor pays the subscription money and the subscription is established; Subscription takes effect when the fund share registration institution confirms the fund share.