For an open-end fund, under normal circumstances, investors should be able to apply for purchase, conversion and redemption on any working day. However, when the fund continues to purchase and expand its scale, in order to protect the rights and interests of investors, the fund company can take measures to suspend the subscription conversion business within a certain period of time to control the excessive expansion of the fund scale; Sometimes, fund companies may also take measures to suspend redemption. During the working days during this period, the fund is closed, that is, the subscription, conversion and redemption business are suspended. On other working days, when the fund is open, it can handle subscription, conversion and redemption for investors. This working day is an open day. The definition of fund open day is as follows.

The fund open day is defined as the working day for investors to handle a series of businesses such as account opening, subscription, redemption, account cancellation, loss reporting and transfer.