Why can some local numbers send short messages to China Mobile?

Because it is fraudulent information. Some local numbers can send short messages to China Mobile because it is fraudulent information. China Mobile doesn't just use 10086 to send messages. For example, this marketing short message will use another number to push the message, but these numbers still belong to China Mobile Company, such as 10086 1 1 and so on. Of course, the message related to the phone bill balance is sent through the official telephone number 10086.