It is the code name for the fund.

It is not the order amount, but the subscription amount or subscription amount. The former is the amount of money investors buy (buying during this period is called "subscription") of the new fund during the issuance period; the new fund goes through a certain period of time. After the closed period, you can freely buy (called subscription) and sell (called redemption). At this time, the amount investors buy into the fund is called the subscription amount.