First of all, the fund is a venture capital, and the principal of your investment will show profit and loss.
Most of us invest in Public Offering of Fund products, that is, they are sold by banks and traded online.
funds can only be bought and sold during trading hours within trading days, so it is not advisable at any time.
generally speaking, the fund products can be sold on the second trading day from the date of purchase. But after selling the fund, it takes three working days for the money to arrive in the account.