2. "857" in the bar is actually an online buzzword, which refers to the empty ear in the chorus of "Gongchi Bow" and "Feel My Bass", and has now developed into a synonym for disco.

3. Now the network buzzword "857" often appears in various short videos. In the most popular video, children ask their parents, "Do you know what 857 is?" As soon as the voice fell, the music began. The child said, "Just shake it", and then the parents replied, "See how mom and dad like you, and it's over."