If the fund is bought before 15:00, it is counted as the current day. Confirm the share on the next trading day, and you can see the profit and loss of the next trading day. If it is bought after 15:00, it will be settled according to the net value of the next trading day. Weekends and holidays are settled according to the net value of the first trading day after that.
The fund trades according to the principle of unknown price. Investors don't know the net value of the day before buying, and they don't know the net value of the day before selling. However, investors can estimate according to the market conditions of the day.