The act of buying a fund during its initial issuance is called subscription. After the subscription period, the fund needs to enter a closed period of no more than 3 months.
After the fund is closed, if you apply to buy an open-end fund, it is customarily called fund subscription to distinguish it from subscription during the issuance period.
Calculation formula of fund subscription fee:
Front-end subscription fee = subscription amount-subscription amount /( 1+ subscription rate)
Back-end subscription fee = redemption share × net value of fund share (face value of fund share) × back-end subscription (subscription) rate.