How to open the SMS package in China? How to cancel?

It is suggested that you open M-Zone monthly SMS package, 20 yuan 400 SMS package and calcium dobesilate capsule 150 SMS package (except M-Zone, there is no other package suitable for you at present). The monthly SMS package can only be opened through 10086 manual desk, business hall or online business hall. If you have any questions, please consult 10086. You can't cancel the basic SMS subscription unless you change to another subscription. You can go to the business hall, but if you want to cancel the SMS service, you can call 10086 to cancel the service, or go to the local business hall to cancel it.