The principle of unknown price means that you don't know the specific net value of the fund when submitting the application for subscription and redemption. Only after submitting the application for subscription and redemption, the fund company announces the net value of the fund that night, and you know how many fund shares you can subscribe for and how many you can redeem.
For example, whether you submit the application for subscription and redemption at 9: 00 am or 2: 59 pm on Monday, 9th, as long as it is before Monday afternoon 15 on the 9th, the transaction is based on the fund net value of that day, but the fund net value of that day is announced by the fund company that night, and there is only one fund net value in one day.
Therefore, the principle of "amount subscription and share redemption" is caused by the principle of unknown price.
When purchasing, enter the amount to be invested, and only after the net value of the fund is announced on the same day will you know how many small fund shares you can buy.
When redeeming, enter how many copies you need to sell, and you won't know the redemption amount until the net value of the fund is announced on the same day.
In fact, fund conversion is equivalent to selling one fund and buying another fund, which helps us save time in operation. However, due to the trading principle that the fund price is unknown, the subscription amount transferred to the fund is calculated according to the expected redemption amount of the transferred fund, so it may not be completely accurate.