Point-to-point SMS within China Mobile network

Peer-to-peer means mobile phone to mobile phone. You must know the text message of a number like 10658880. The port you send it to is not point-to-point. It is mobile within the network, China Telecom, Netcom, PHS or something like that. They are all outside the network, and text messages are standard as long as they are not sent to foreign countries, Hong Kong, Macao and Taiwan. There is no distinction between roaming and long distance. We have 80M traffic for 10 yuan. Why is it so dark? 10M is a bit high, not much. Check the traffic in time. If it is not more, use less Internet. Just change the package next month.