How to cancel China Unicom's 121 weather forecast SMS?

There are three ways to cancel Unicom weather forecast: 1. Call 11 to cancel through manual service; 2 go to the business hall to cancel with the valid certificate of the owner; 3 Edit the short message or and send it to 1628121, and you can cancel the short message service of weather forecast, and charge an information fee of .1 yuan per message.