Hongling's argument is sectional, not formal. By elevating the building, O-office returns the most contested surface in a hyper-dense city — the ground — to play, then layers sports fields, club rooms, theaters and playgrounds across levels so children constantly see each other in motion. In a humid subtropical climate, shaded semi-outdoor space becomes the default rather than the exception. The paired drum-shaped classrooms push further, dissolving the corridor-and-box typology that Chinese school codes usually enforce.