I opened a card at CCB today and reserved my mobile phone number. After saving the money, how did another mobile phone receive the text message?

Because your previous bank card had mobile banking or a short message reminding you of your specific name, I'm not sure I will send you a short message. The account name of your current card is the same as the original account name, so it was tied up and hung up. I don't know if you can understand, it's just like online banking. If you want to reopen online banking, you can only call mobile banking on the first card. This is the same, so it is useless to hang the signal you reserved on your original bank card.