Which is more accurate, the group announcement or @ Everyone Reminder?

When there is important news, the group owner will inform everyone instead of making a mass announcement.

Group is an instant messaging platform for a small group of QQ users with the same function. This group can be a group of people who don't know or don't know at all, and get together for a certain purpose (multiple QQ groups of the same type can form a tribe). Now many chat tools have set up the group function, such as Baidu Hi. Groups can be made up of different people, and there are many kinds of groups. For example, classmates, fellow villagers, stars, novels, TV dramas, free Pascal, photography and so on. Groups provide a platform for communication.