Small high-rise attic living room floor wants to smash. Is it feasible?

This will definitely not work. First of all, the property will come to you, and you have destroyed the original structure of the house. Secondly, the demolition of the floor will have an impact on the bearing capacity of the two walls. The two walls will obviously be pulled in opposite directions, and the walls will definitely crack after a long time. That's what the house next door did before, causing cracks in the public walls of my house and his house, which have not been solved yet.