Yes The credit card of ABC can be upgraded in the following ways: the temporary credit line is initiated by the customer and adjusted within a certain period after being accepted and approved by ABC. When the time expires, the credit line will be automatically transferred back to the original credit line. At present, the temporary credit line of ABC is valid for two months at the longest, and can be applied through ABC counter, credit card customer service manual, WeChat bank, pocket bank, self-service voice and online banking.