When applying for a mortgage loan, you need to submit the relevant materials required for mortgage to the bank designated by the developer or the local bank to apply for a mortgage loan. The bank will review the personal materials and notify the borrower to sign a mortgage loan contract with the bank after the review is passed. Generally, it takes about a month for a loan to arrive. After receiving the notice, the monthly payment will be made in the next month, and the full repayment will be made at regular intervals according to the repayment date signed with the bank. Therefore, the purchase of the auction house is based on the first repayment and then the delivery.