C481 Enter the Fog?

It was Lin Yu's first time seeing such thick fog. The sky was fine, but it could affect one's sight. However, the fog was getting thicker and thicker. It was as if a thick cloud had fallen from the sky to the ground. Moreover, the fog was not still. It was as if it was slowly floating and flowing. Looking at this scene, it gave people the illusion that the sky had turned upside down