Global Survival: No System, Just Grit

Lin An transmigrates to another world. He thought he would have a System, but he didn't. Then...

"System: Have you slept at all this month?"

"Deity: You have more stamina than I do!"

"Survivor: Why do you level up so fast?"

Everyone crowds around him, asking, "Why are you so strong?"

Lin An smiles faintly. "My grind game is just that strong."

Just that strong???