Shenzhen Development Bank recently announced on its web site that, starting from this day, it will upgrade its debit cards. After the upgrade, the deferred payment function of the bank's original debit card will be restricted. The time for customers to defer repayment after consumption will be shortened from the original 50 days to 19 days after the current bill date, and the originally unlimited deferred payment consumption amount will be reset with a maximum limit of 1 million yuan.