Mortgage loans have tightened. According to the information about cash flow debt repayment, the reason for the decline in the coverage of cash flow debt repayment is the tightening of mortgage. Especially in the second and third tier cities, this has affected the company's cash withdrawal speed, which is still a disadvantage for the company in the second half of the year. Full coverage of cash flow means that cash flow management is safer and the risk of breakage is smaller. Cash flow coverage refers to whether the cash flow generated by the project can cover the corresponding loan principal and interest, and reveal the repayment ability of the project cash flow to the loan. The CBRC adopts the "four-division method" of cash flow coverage for the repayment degree of local government investment and financing platform loans, that is, full cash flow coverage, basic cash flow coverage, half cash flow coverage and no cash flow coverage at all.