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Generating power by absorbing sound wave is the design principle for screaming glow bar. And the power will make glow stick luminescent. During the live show, the sound of audiences scream and applause can be generated and utilized by screaming glow stick. The louder the sound, the more shining the screaming glow stick. The inner part of the top is equipped with storage battery, which guarantees a continuous luminescence for half a hour even thought the site is quiet.