No system, no cheats, the protagonist is forced to work to save the world
Xia Yichen became desperate after the last survivor's base was breached. He ate all the food and water, went straight to the group of corpses, and fought to the death, not seeking life, but only seeking death. But he was unexpectedly reborn a year before the outbreak. He didn't have any big ambitions, so he decided to escape to a safe and comfortable place that zombies couldn't reach at all. But there are always people who make him feel uncomfortable. (This book is also called "I am a spy in the end of the world")
