Stole My Bunker? Girl, My T-Rex Says HELLO.

Su Yao dies in the first days of the collapse, attacked by dinosaurs after Zheng Lanlan, the popular girl at her school, sets her up. She opens her eyes again on the morning of her graduation ceremony, before any of it has happened. She goes for the Kanas caves and buys the ownership outright, borrowing four hundred million to do it, then puts the money into turning the caves into a shelter built to hold against a nuclear strike. A system wakes up in her. She tames a pterosaur, then a tyrannosaur, then a brontosaur, and keeps going until she has an army of them. Zheng Lanlan has come back as well. She brings armed men against the shelter and is turned away, then attaches herself to the Azure Dragon Group, which has mechanical dinosaurs, and with them she takes the caves. Su Yao goes after the brontosaur lord on her own and brings her army back to the caves.