Non-trading day refers to the date when fund shares cannot be traded on the exchange. In general, the fund's non-open days include weekends and national statutory holidays. In addition, there are specific business activity days, such as: fund dividend date, fund share conversion date, fund income settlement date, etc.

For investors, the closing date of the fund means that the fund shares cannot be traded. However, they can still buy and redeem funds, but the transaction price of these operations will be the net price of the next trading day. Investors also need to know about the changes in account assets during non-open days, as well as other possible income payments and expense deductions.

In addition, fund companies will also conduct fund valuation and fund scale update on closed days. These operations are usually completed before the opening of the next trading day and will affect the net price of the fund. Therefore, investors need to pay close attention to the business date of the fund in order to better understand their fund investment and account changes.