If you are the first suite, the minimum is 30%, because there are many loan portfolios. Let me help you figure it out. The loan is 700,000 yuan, 30 years, pure business (8.5% interest rate), the monthly payment is about 3,800 yuan, and the 30-year interest plus interest is about 6,543,800 yuan, plus the previous down payment of 300,000 yuan, the actual total is about 6,543,800 yuan+0,600 yuan. These are rough estimates, because the specific situation is different.