Joke Collection Website - Blessing messages - Mobile phone short number problem

Mobile phone short number problem

What is a cornet? You mean the group, right? If you are a group, it is free to call each other, no matter how long it takes, it is free and unlimited. You can't send short messages to other people in the group who use short numbers. One of them doesn't need to collect money, and the group doesn't know how many people can get in ... but my teacher seems to say that it's no problem for him to add a group of two thousand people to the university.