C27 Is a Ghost Causing Trouble?

Ru Feng recognized the road and continued walking, suddenly he saw pitch black, as though there was a high wall blocking his way. There seemed to be a faint sound of a tree. He muttered to himself, "I'm afraid the sudden appearance of a black shadow in front of my eyes is not a good thing." The one who listened to the ghost told him. This thing was called 'block'. It was a ghost doing something