Starting at F Level? She Kills the Max-Level Boss Through the Apocalypse

[The end of the natural disaster + soul rebirth + decisive killing + strong female + cool writing + full-level boss + infrastructure] "A mere F-level waste, worthy only of being thrown into the zombie horde and used as cannon fodder!" Ji Ning, who reached the pinnacle of the apocalypse in her previous life but was stabbed in the back by her best friend, opened her eyes and was reborn back to the day when her powers were tested ten years ago. Facing the ruthless ridicule and bullying from the entire base, this former SSS-level final warrior didn't even raise his eyelids. They had no idea that this seemingly frail body contained ten years of extreme fighting instincts, as well as the god-level power of "insight" that could see through all the weaknesses and rules in the world. Can Class F just wait to die? She uses the lowest kinetic energy combination to instantly kill high-level geniuses; Those at the bottom don't deserve to live? She simply overturned the old order and led a group of abandoned "waste" to build the strongest fortress in the apocalypse - Dawn Base. When the rift in the abyss fully erupted, the defense lines of the nobles from the high-ranking families collapsed, and they knelt outside the gate of Dawn Base crying and begging for their lives. Ji Ning stood on the steel city wall, standing side by side with the stern man who tore apart space to come for her. She lowered her eyes and sneered: "Sorry, I have the final say now about the rules of the new world."