What does it mean for China Mobile to send a text message saying that it has obtained exclusive services such as 10 yuan credit line?

The line of 10 yuan is the arrears line of 10 yuan calculated by China Mobile according to the phone bill before your mobile phone number and the record of paying the phone bill. For example, the mobile phone is out of money now and should have stopped, but now, there is a line of 10 yuan without stopping, but the phone bill should be paid within the specified time.