The plaintiff filed the following claims with our court: 1, and ordered the defendant to pay the house payment advanced by the plaintiff of RMB 303 154.77, and calculate the interest at four times the bank loan interest rate for the same period, from September 9, 20 16 to the date when the judgment determines the payment; The defendant should bear all the litigation costs of this case. The facts and reasons are as follows: On March 2, 2065438+2006, the defendant signed a Personal First-hand Housing Loan Contract with Bank of China Danyang Branch (hereinafter referred to as Bank of China Danyang Branch), stipulating that the Bank of China Danyang Branch would lend the defendant 300,000 yuan for the purchase of a house, and the plaintiff provided joint liability guarantee for the defendant's loan. After the loan was issued, the defendant failed to fulfill the repayment obligation as agreed. 2065438+On September 9, 2006, the plaintiff repaid all the outstanding principal and interest to Danyang Sub-branch of Bank of China on behalf of the defendant, totaling 303 154.77 yuan.