Because Bai Xiaotian was so bad at the battle royale game, he unlocked the achievement for dying as soon as he landed 100 times. Furious, he uninstalled the game, never imagining that a god would play a joke on him.
When Bai Xiaotian woke up, he had transmigrated to a battlefield where two nations were at war and corpses littered the ground. The opposing forces were about to clash again.
In his desperation, he activated the System, which let him enter the game world and bring back all kinds of gear from the game.
Healing potions, guns, cannons, tanks, mechs...