What if the property does not allow cast-in-place mezzanine?

Tintin still has to listen to the real estate tycoons. Cast-in-place is load-bearing, and if there is no load-bearing wall or beam support, it is easy to have problems. Even if it looks good now and takes a long time, there is definitely no way to avoid cracks ~ The bathroom below is generally non-load-bearing and looks solid, but it is actually unsupported. If Tintin wants to be a partition and doesn't particularly require warmth and sound insulation, he can consider making a steel-wood structure, which is much lighter, but when he goes upstairs, he can hear the footsteps downstairs more clearly ~ the family also dances in the partition for a while and passes by weakly. ...