The End of the World: Survive to the End by Hoarding Trillions of Supplies

Lin Peipei traveled back in time to a post-apocalyptic novel. As a cannon fodder female supporting character who couldn't survive more than a week, she snatched the heroine's space bracelet at the beginning and asked the male supporting character to help hoard supplies worth trillions. She was familiar with the plot in the book and survived heavy rain, extreme cold, and extreme heat. After the species mutated, she and her male partner formed a powerful supernatural army and successfully reached the finale.