Solution:
1 If the time for mortgage registration exceeds the time allowed by the bank, the bank can tell you that you can't release the loan without the quota. In this case, you can only cancel the loan contract with the bank, and then ask the bank to give you the materials and go to the Housing Authority to cancel the mortgage registration.
2 if it's a bank's unilateral reason and it's a bank's default, you can have two choices, one is to sue the bank, and the other is to change banks and make mortgage loans.
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