This realistic photo taken from a low oblique angle focuses on the exterior wall of an old urban industrial building. The wall is paved with weathered red bricks with light mortar joints, several metal pipes are arranged horizontally on the wall. The old metal distribution box hanging on the right has mottled paint, the lower part of the yellow-green paint is sprayed to light gray, covered with scratches and traces of use. Strong light and shadow contrast creates a retro nostalgic atmosphere, showing the unique aged texture of old urban industrial buildings.