The three-storey building, about 13 meters high, has a roof facing the ground and floor upside down. Outside the house, beepers, dog houses, mailboxes, etc. stand upside down, while inside the house, kitchens, bathrooms, bedrooms and staircases and other equipment and furniture are also upside down on the ceiling. It is amazing that it completely subverts the sense of space in people's cognition. Walking into the house, feeling the wonderful experience of walking and dancing on the ceiling, relaxing "upside down" and looking at the outside world from different angles is interesting.