If the public version of "One Netcom User" is a comprehensive management account, if you have multiple cards and credit cards under your name, you can associate the cards and credit cards to the One Netcom user account after applying for one Netcom user account. In the future, you can log in to the China Netcom user account to manage the CMB account under your name through the web, mobile banking, and pad banking. You do not need to log in through the card number and password, which is more convenient.