Excuse me, is the sixth floor of the old factory building in the 1990s a brick-concrete structure?

In the 1990s, most of them were brick-concrete structures, but some of them were cast-in-place structures. The load-bearing wall can't be knocked out. If the load-bearing wall is destroyed, it will cause irreversible damage to the upper structure (even if it is later repaired with a wall, because the structural nature has changed), the general decoration will be reported to the property, and the decoration deposit will be submitted. This is to prevent the phenomenon of indiscriminate excavation, and the property has the responsibility to check it every day. Once problems are found, they need to be dealt with in time.