Zombie Virus Doomsday Fortress

It was early one morning when Xiao Ma and Xiao Zhang were staying up all night in the university dormitory. When Xiao Zhang took off his headphones and prepared to pull down the curtains, he stood stunned by the window in horror. The school had already become chaotic. At the same time, the other two roommates turned into zombies... This book has no special abilities and no system, and is purely original. I hope you all like it!