Part of the house decoration needs to be cast in place. The property does not agree, and all the neighbors sign it. What about all kinds of requirements?

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. Generally, the walls of the bathroom below are not load-bearing and look solid, but there is no support.

If Tintin wants to be a partition, and he doesn't particularly require thermal insulation and sound insulation, he can consider making a steel-wood structure, which is much lighter, but the footsteps downstairs will be heard more clearly when going upstairs ~ the family is still passing by with a small dance of partition.