It's not a singer or a DJ shouting in a bar. It's called MC (commonly known as Mai), but the DJ in the bar will also be called d MC. Their role is to stimulate the atmosphere of the dance floor bar, or say a few words before the opening of 10. Welcome all guests, handsome guys and beautiful girls to our bar, or make a joke and say there are handsome guys in the bar. What, the climax begins at 12, and the most frequently shouted is that you follow my music, and the melody is three, two, one! Then beat the drums, which is the atmosphere that drives the climax tonight.