Fund daily profit and loss = (net fund value at the close of the previous trading day-net fund value at the close of that day) * fund share handling fee. The income generated by the fund on the same day will be updated the next day, and investors do not need to calculate it manually.

For example, if the fund's net value at the close of the day is 1.22, and the fund's net value at the close of the previous day is 1.2, and the investor holds 1000 shares, it can be calculated that the investor's profit and loss at that day is: (1.22-1.2.