Rebirth in the Apocalypse, I Am Walking Sideways in the Apocalypse

[The end of the world + zombies + ruthless people + space + stocking up + infrastructure + strong women + cp + pets] There are foreshadowings in the plot - "The Medical Path of the End of the World: Rebirth without Love Brain" Song Xi, who had lived in the apocalypse for ten years, was betrayed by her crush, who pushed her into a zombie swarm to die. Song Xi and Ben were students at Jiangdong Medical University, but they caught up with the end of the world. Her classmates and most trusted teammates all died at the mouths of zombies, so the seeds of ending the apocalypse were deeply planted in her heart. In the last days, she has not awakened any powers, but she is proficient in medical skills and has become a doctor in the base. She devoted herself to researching zombie virus inhibitors, but she didn't expect that before the task was completed, she was betrayed and died at the hands of her teammates she had a crush on. Now that she has been reborn, she never wants to repeat the mistakes of her previous life. She is determined to change. She who was originally a little bit love-minded began to become cold-blooded and ruthless. In her last life, she was a powerless doctor. In her new life, with the support of the system, she unlocked invincible powers to help her survive the apocalypse. From then on, she devoted herself to her career... (The heroine was not so strong at first, she just took it one step at a time. In the middle and later stages, the heroine's strength overwhelmed everyone)