The Conquerors Path - Chapter 639-New Ploy At The Hospital Taken From The Past.

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

The world has changed, and so have the people.

Orphaned at the mere age of seven and thrown out on the streets with no place to go. Kana lived the life of a street rat. She did what she could to survive from digging through the trash and stealing what she could. But even after almost ten years of surviving, her life still ended short.

After being set up and killed by her half-sister whom her ex-boyfriend had cheated with, Mu Siyin woke up one day to discover that not only was she alive, but she had traveled back in time to 2 years before her death.