Credit card recommendation codes are really useful, but if too many people recommend them, the effect will gradually decline. For example, if A fails to recommend B and B after getting off the card, then the bank will definitely block A's recommendation code, and then C will be rejected if it comes back to use this recommendation code. Like the online recommendation codes released last year and the year before last, if they are used by a large number of people, they will be discovered by banks and blocked. If you fill it in, you will only be rejected by seconds!
If you want to find a valid recommendation code, just search "the latest XX bank recommendation code in XX year and XX month" (for example, the latest Ping An Bank credit card recommendation code in 20 16, 1 month) to find the latest one, and you will definitely get the card!