To put it bluntly, it is a blasting ball. I'm from Suzhou Wedding Company. We have done similar things before. You stand in a ball (never put dry ice in it for the feeling of walking around, but carbon dioxide is dangerous). Lights out-shoot your acquaintances and lovers into MV and put them on the blasting ball with a projector-MV ends-spotlight hits the blasting ball-ask your good friend to set off fireworks+music+blasting ball (this link is almost synchronous. Share a little experience.