Rebirth in the Apocalypse to Become a Queen

[Rebirth at the end of the world + single female protagonist + no CP + system + no virgin] Overnight, the zombie virus swept the world. Female college student Shen Xuan died after eight years of struggling to survive in the apocalypse. Waking up again, I found myself back in time the day before the zombie outbreak, and got a magical strengthening system... The road to find my parents is rough and bumpy... Constantly mutating zombies, intrigues among similar species, and constant challenges to survival... Shen Xuan, who originally wanted to survive, could only fight tenaciously...