The purchase and redemption price of the fund is the net value of the fund unit on the day of redemption application. The net value of a fund unit refers to the value of each fund and is an indicator to measure the value of the fund. Net value of fund unit = total net asset value of fund/total share of fund unit, and the subscription and redemption of open-end funds are carried out at this price.

For example, the net value of the fund unit is 1.25, that is, the value of the day is 1.25 yuan. Assuming that the daily net value of customers' participation is 1, and the daily net value of customers' withdrawal is 1.25, the income is 1- 1 = 0.25 yuan/share without considering the handling fee.