Doomsday: Countdown to the Final Requiem

In 2012, Bai Xi was only 17 years old. But by 2033, she already had a 20-year-old son. A sudden nuclear explosion took her life, but sent her back to the era before the apocalypse. What should she do now? She loves her son deeply, but knows full well that she may never find the man from back then again, or have the child she had with him. What should she do? By chance, she discovers that she has a mysterious space. What should she do with it? The apocalypse, the mutation crisis... this is only the beginning. The mother and son are the male and female leads, but the actual pairings are the female lead with a male supporting character, and the male lead with a female supporting character. This story has little romance and focuses mainly on survival. The female lead's space cannot hold living things. Anything put inside dies. This story is a real pitfall, so enter at your own risk.