After Rebirth in the Apocalypse, Build Infrastructure in Ancient Times

[Rebirth in the apocalypse + upgrade flow + alien beasts + escape + no CP text] Setting, big heroine, basic writing, boring in the early stage. As the second-in-command of the apocalyptic base, he was transported to ancient times by a gravity bomb from his enemy during a zombie siege. Fortunately, he had the ability to travel with him. I wanted to live a peaceful and stable life with my mother, but who could have imagined that a natural disaster struck, and then the animals mutated. Shen Qingyun fled with her mother all the way. In addition to facing the treacherous human beings, she also had to guard against mutated animals and take in her little brother on the way. Shen Qingyun lived a happy life. Unexpectedly, she met an old friend on the way. Her father, a scumbag who joined the army, was not dead and was even intimate with a woman.