Why did the credit card of China Construction Bank send a text message saying what to provide, which is related to the bank certification materials?

Have you applied for a CCB credit card? It's already under review.

If the bank needs you to supplement the materials during the audit, it will send you a text message. Specific materials will contact you by phone. Please pay attention to incoming calls, usually local area code numbers. If you don't receive the call, you can also contact the local CCB for consultation.

If it means something else, you can ask again.