You can't. According to the enquiry of China Travel Service. The loan liabilities of the Postal Savings Bank are too large to be approved. The examination and approval criteria of the Postal Savings Bank loan are: the applicant has a good credit record, a stable source of income, sufficient repayment ability, and the debt ratio cannot exceed 50%. If the applicant's debt ratio exceeds 50%, the Postal Savings Bank will not approve the loan.