I Have Apocalypse Skills for Surviving the Famine in Ancient Times

Shen Yue, a genius doctor from the modern era, was forcibly bound to an apocalypse survival System, only to be sent to ancient times to flee a famine. From the start, the System gave her a mystical lightning technique. Every increase in her combat power would bring her more rewards. Survival was easy to sort out, but wasn't life getting a little too dull? She was still an ambitious woman, after all. Though she had a mother-in-law who meddled in everything, thankfully her original body's husband was already dead, leaving the young widow free to move forward without a stumbling block. Since her mother-in-law was so noisy, Shen Yue decided to find her a husband. She thought life would finally be peaceful after that, but then the Heir of Prince Yan showed up. If he wanted to be her tool, who was she to stop him?