I Turned Out to Be Cannon Fodder

What would you do if one day the world changed beyond recognition? What would you do if one day you suddenly found yourself in a novel? If one day you know that you are just a cannon fodder and you can return to your original world after death, will you accept the plot arrangement, or will you risk your life for once? Hello, I am Xilin. It's not Xilin. The above is the concise version. Xilin's life was turned upside down in one day. The world seemed to be changing at double speed, so fast that she felt it was ridiculous. So Xilin decided to follow the country and joined the fifth team. Mutated plants, zombies, cold waves, acid rain, and violent sun all seemed like a novel she read in her dream. Then, she met a girl, Xilin remembered, and she traveled through time, into a post-apocalyptic novel she read before she died. But, she doesn't know her identity, she has vague memories and a vague plot. Later, Xilin remembered her identity and a voice told her before she traveled through time. "By completing the original route, you can gain thirty years of real life." She looked at the devastated land, her comrades who stood side by side, and the world she lived in. Where to go, she didn't know. PS: I think this book is an emotional flow [With CP×Book×Apocalypse×Superpower]