It may be that the listening prevention on the stage is not turned on, or it may be that the listening prevention is very poor. I suggest you go under the stage so that you can hear the sound from the main speaker clearly. There's another way. If you sing well, you don't have to listen, just sing as usual. As long as you keep up with the rhythm, the effect is still very good! Every time you follow the first method, you can still interact with the audience under the stage. The effect is good!