How to upgrade China Mobile's local cornet to the provincial cornet?

Provincial version of Family Fun: 8 yuan/person/month, the main card can be set with up to 6 supplementary cards (mobile numbers in the province) as member numbers, and each person can enjoy 1000 minutes before dialing the member numbers in the province, and then calling 0.2 yuan in the province/minute is free. Tips: the function fee is paid by the main card, and at least one member is required. Minimum monthly function fee 16 yuan. The main card editing message "KTI8" is sent to 10086, and the operation is confirmed again.