If it is a China Merchants Bank credit card, you cannot apply for it with a debit card alone.

The most important conditions for applying for our credit card are that you are between 18 and 60 years old (overseas residents are between 25 and 60 years old), have certain financial capabilities and have a good credit record. The result of credit card application shall be subject to actual review by our bank. The necessary application documents are copies of identity certificates and employment certification documents. If you can provide other financial documents, it will be more helpful for us to understand your personal situation and determine your credit limit.