Generally, the sound system for playing background music and cultural activities is separate. The sound system for playing background music is generally a small-skill speaker. Each class hangs two small-skill speakers, which are then connected to a power amplifier, with a wired microphone and a DVD or computer. The audio system for cultural activities needs a pair of main speakers (12 inches) with larger skills, and then a professional amplifier, mixer with effect and wireless microphone, and a computer, so that it can be used to sing karaoke and engage in cultural activities.