If you must do it in Ji'an, you can only go to these state-owned banks. I suggest not to go to the Postal Savings Bank of China and the Provincial Rural Credit Cooperative mentioned on the second floor, because their online banking systems do not work. Sound, there may be phenomena such as system instability and security vulnerabilities.
I would rather recommend China Construction Bank. Their system is very good, safe and powerful.
You can also go to other places to apply for a credit card, such as China Merchants Bank, Pudong Development Bank, Industrial Bank, CITIC Bank, etc. When applying, you need to provide your email address, home landline phone number, and a copy of your ID card. It can be done in about 3 weeks.