Everyone's Battlefield: Start with the Underworld Template

Parallel world, Blue Star. A few years ago a nuclear war destroyed most of the planet. The sweeping radiation dust forced the survivors to hide in the underground world and eke out an existence. As the resources for survival are gradually depleted, the ancient battlefield in the mysterious forbidden land quietly descends! And one hundred people from each country will be randomly selected to enter the battlefield. Han Yang, who had traveled through time, happened to be among these hundred people. The moment he enters the battlefield, he activates the system and merges the hell template. The gate of hell is wide open, and hundreds of ghosts are walking at night. Netizens from various countries: Are you crazy? While others are seeking survival, is he creating an underworld? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.