The maximum amount of second-hand housing purchase is 6,543,800 yuan, the maximum amount of second-hand housing improvement loan is 6,543,800 yuan, and the longest loan period is 25 years. In addition, you can also withdraw the provident fund for personal housing maintenance and decoration, and the amount of withdrawal does not exceed 50% of the balance of the provident fund account. The above is only a reference range, and the specific amount needs to be determined according to the applicant's situation.