Wedding Night: I Use a Jade Pendant to Repay a Debt of Gratitude

[Love After Marriage + Secret Crush + Both Pure + One-on-One Romance + Sweet Romance + System + Everyone's Darling] Song Qinghua, a medical genius from the apocalypse, transmigrates into a book and becomes a minor character who exists only in people's memories. She also gets stuck with a useless System that keeps assigning her all kinds of missions. But why are so many people relying on me to save them? Isn't saving the world supposed to be the heroine's job? What do you mean the heroine has turned evil? And if I don't complete the missions, you'll deduct my silver?

The hero looks aggrieved. "Qingqing, don't you want to save me?"

The heroine: "I want to save your mom, but I don't want to save you."

The hero: "…"