Generally speaking, the account balance is equal to the available balance.

But concentration can make a difference:

1. The fund has just been redeemed, but the transaction has not been confirmed. At this point, the account balance still contains the share, but the available balance is reduced.

2 just subscribed to the fund, has been confirmed but has not yet arrived. At this time, the account balance already includes the fund just purchased, but since this share will not be used until T+2, the available balance will be less, which is equal to one day.

3. When the share changes actively or passively, there are other situations where the short-term balance is not equal to the available balance.