Love Follows the Counterattack in the Apocalypse

Lin Xiaoxi was sadly facing the end of the world when she was about to go to college. She could have stayed in her own secret realm of immortality, farming and cultivating leisurely, but she couldn't let go of her little brother who looked like a white moonlight. In this apocalyptic world where people are more terrifying than zombies, can Lin Xiaoxi and her little brother stay together until the end?