How to modify China Mobile's tariff package through SMS?

How to change the package: please indicate the business you want to handle, such as "handling and 4G package", "canceling the color ring back tone" and "opening the family plan". This machine can edit CXTC to 10086 to inquire about the voice, short message and data stream packages handled by this machine next month; Edit 0000 to 10086 according to the prompt to cancel the value-added service.