An audio-visual feast, a favorite star, a beautiful music, a dynamic dance, a cool dance, beautiful scenes, star-studded! For the audience, a performance is also a carnival! Behind the carnival, there is always a group of behind-the-scenes staff who are silently paying attention to the stage movements. They prepare for the event in advance, and at the end, do the final cleanup. It can be said that they are real behind-the- scenes heroes.