Old Liu is a security guard in the residential complex. On June 19 morning, he stands in the lobby holding a crackling civilian walkie-talkie, his face ashen. He shares a rumor from Phase Three's guard: his nephew at the meteorological bureau says that in the Pacific Ocean, seawater was vaporized by thousands of degrees, combined with ash, so there will be no sun from now on. His words spread dread among the residents, adding to the growing panic.