You can consult the account manager of the local construction company that handles the loan for you and ask whether your deduction date is 10 or 2 1- the end of each month.
A worried customer like you should have a good credit record. My mortgage in Zhengzhou ICBC has been overdue for 8 years twice, but I didn't save enough that day, and the credit record can't be remedied. Just pay attention in the future.
In addition, many banks now only look at the credit records of the last 24 months when approving loans, which can guide customers to have overdue records and remedy them. In the past, they checked the overdue time of customers at any time, and some customers easily broke their cans and fell off many times.