keep the current render exactly as it is do not modify any colors materials lighting geometry proportions or surrounding elements no global changes of any kind are allowed the only modification to apply is to the central space on the second floor which must be converted into a fully open void that passes completely through the building from front to back for this central second floor space there is no back wall no rear enclosure no glazing no glass no solid surface no depth closure no visual termination this space must render as a complete perforation through the building mass fully transparent all the way to the background with visible sky or distant neutral background through it with zero architectural elements inside the void
