i have a mansion in the post-apocalyptic world. the day after the nuclear war, jiang chen crossed into the judgment and there was a mess everywhere. jiang chen led the refugees to create a base zone and create a federation to survive. then bring the technology of the judgment day, and return to the real world. change the earth's political system, rescue the planet in a crucial moment, and create the earth's great union federation! expanding the territories and fighting from the sky against danger.