Fund subscription adopts the "unknown price method", and investors take the net asset value of the fund unit on the subscription day as the subscription price. For example, an open-end fund was purchased before 3 pm on August 12 this year, and the system confirmed that the transaction was valid on August 12, so the purchase price is the unit net value on August 12. But the specific price will not be announced until August 13. If the purchase is made after 3 pm on August 12, the system will count the transaction as a valid purchase on the next working day, that is, the purchase price is the unit net value on August 13, and the specific price can only be seen on August 14.