Traveling back thirty years ago, I found that everyone was still embracing each other to enter the simple different-dimensional world. But Mu Bai walked into the hell-level different-dimensional world without looking back. In "Ghost World", others came in only to Going out alive, but Mu Bai killed all the ghosts inside and ran away. In "City of Evil", when everyone was desperately trying to get a few bullets out, Mu Bai got a research invention that even the fourth-level different-dimensional world civilization was afraid of. . "Mountain of Demons", when everyone is kneeling and licking the demon, Mu Bai stepped on the demon's head and started to draw blood.