The signing method of additional account for personal mobile banking is as follows: 1. The sponsor's valid identity certificate, any signed accounts and accounts to be added must be handled at any outlet of CCB. 2. If the account to be added is a subscription account of personal online banking, and the online banking shield has been bound, you can log in to personal online banking and select "Mobile Banking-Additional Account" through "My Account-Mobile Banking Management-Contract Maintenance" to add (if the added account has been previously added as a non-subscription account of mobile banking, it must be deleted through mobile banking, and then follow Method 2). (In case of business changes, please refer to the actual situation. )