How to send short messages to traffic packets?

Because you can't describe it clearly, the traffic packages handled by different cities are different. For example, you can edit the short message DGJYB 10 and send it to 100 10? 10 yuan includes domestic flow 100MB. The order of flow refueling package takes effect immediately and cannot be cancelled. The subscription of traffic in the package is valid in the current month, and can be ordered at most 10 times in the current month, and will automatically expire next month. There is a charge for ordering the flow refueling package in the current month, and no charge for not ordering next month. If this is not the case, it is recommended to contact Unicom customer service.