How to modify the mobile phone number bound by ICBC SMS Bank?

The mobile phone number bound by SMS banking does not support direct modification. Please use the original bound mobile phone, edit the short message "QXBDSJ" and send it to 95588, unbind the original number first, then edit the short message "BDSJ# card number or account number" and send it to 95588, and bind the new mobile phone number with the short message bank as prompted ~