Will the ceiling hit the wires upstairs?

Specific reference is as follows:

The floor thickness of high-rise residential buildings is about 12cm and 13cm.

Even if the wire tube arranged in home decoration is on the ground, it is enough to slot 3-4cm deep underground; The standard is thicker than the pipe diameter 1-2cm, so that the cement to be filled later can be firmly attached to the old one.

The ceiling layout line basically does not need to be slotted on the top surface, only the main light of the ceiling will be slotted on the top surface, but this slot is very shallow, about 2cm at most; The wires of the ceiling downlight are directly fixed on the top surface of the floor with fixing clips, and then covered by the ceiling;

So according to the above, it is impossible for the ceiling to hit the wires upstairs. It is out of the question. If you still don't believe it, you can find a professional instrument to test and see the direction of the wire.