What is the current overdue principal?

It is the loan principal incurred this month that should be repaid but has not been repaid.

What is the current overdue interest?

It is the loan interest generated this month that should be repaid but has not been repaid.

What is the new overdue amount in the current period?

It refers to the loan principal and interest incurred this month that should be repaid but not repaid, as well as the interest accrued on the principal and interest owed in previous months.