what can we do in the play??(如果我o地係觀眾)

1. Pay attention to all performances; watch and listen.
2. Stay quiet; absolutely no talking.
3. Never make fun of another person's performance.
4. Refrain from shouting comments to or intentionally distracting the actor during his presentation.
5. Avoid practicing your scene during other performances.
6. Applaud every presentation.
7. Never get out of your seat, move around the room, or distract the teacher during a performance.

extracted from audience etiquette

Show our appreciation, get involved, show our happiness, enjoy the show