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What does the serial number 0 1 of CCB SMS verification code mean?

Serial number. The 6 digits after the SMS verification code of CCB are verification codes, and 0 1 stands for serial number. In online banking or mobile banking, operate the mobile phone verification code to transfer money or pay or handle business, and enter the verification code to successfully handle it. China Construction Bank Co., Ltd. is a leading large commercial bank in China, headquartered in Beijing. Its predecessor, China Construction Bank, was established in June 1954.