Proficient in this aspect of Shenzhouxing calling card, please explain it to me ~

If you send a text message, as long as you send a domestic text message, it will be included in the number of text messages sent to you, even if you don't send a local text message. As long as your card is free to answer calls locally, you can answer all incoming calls locally, including those from other places, but if you are not local and roam, it is very expensive to make a phone call, at 6 cents per minute and 4 cents per minute.