一种以人声为直接传播途径的新型病毒在全球范围内蔓延，为抑制病毒进一步扩散和变异，各地区政府一致决定启动「全城静音」的严控模式。 A new type of virus that uses human voice as a direct transmission route is spreading around the world. In order to curb the further spread and mutation of the virus, the governments of all regions have unanimously decided to activate the strict control mode of "silence in the whole city".
