Outside, monsters and ghosts roam everywhere. I'm so scared. I just want to stay in my safe house until the end of time... ———————— Undead ghosts, endless monsters. Yu Hong, carrying a mysterious black mark, arrives here. Using the black mark that can strengthen everything, he slowly builds his own absolutely safe zone in his safe house. As voted by everyone, this book is a fusion of mysterious cultivation, extreme dao, and old-school style.