The protagonist of the story, a university student who transmigrated back to the apocalypse. He possesses a unique synthesis system that allows him to combine items to create enhanced weapons and potions. Lin Xiu is brave, resourceful, and determined to survive. He starts with low physical stats but improves after using a synthesized Body Potion. He gains titles like Decapitation Master and Zombie Killer, which boost his combat efficiency. He takes the lead in clearing zombies, rescuing survivors, and planning for long-term survival in the school.
