How to cancel the discount of China Mobile M-Zone Home Network?

Hello, if you have customized Beijing Mobile's friend planning service, that is, M-Zone customers (that is, main cards) can add four Beijing Mobile numbers (that is, secondary cards) as family members to create a family planning group. During the business validity period, local calls between group members are free (direct dial only). Friends plan package fee is paid by the main card number. The unsubscribe method of the main card of this service is as follows: the main card customer edits the short message "QXHYJH" and sends it to 10086 to apply for canceling the friend plan service. The way for the secondary card to unsubscribe from the friend plan is as follows: the secondary card customer can edit the short message "TCHYJH Blank Friend Plan Master Card Number" (new instruction) or "TCJT Blank Master Card Number" (old instruction) to 10086, and then quit the family plan group. Please know, thank you!