Hello, custom top wall can be used to make reflective light troughs, which can hide the lamp tubes or lamp cords, making the ceiling look very beautiful. The case effect is as follows:

The operation screenshots of the new version of the top wall are as follows:

1. First, draw the area in the ceiling structure layer and set the height of the lowering;

2. Click on the lowering area, and directly click to generate the light belt in the area attribute bar to create the anti-light trough effect;

3. Enter the profile editing, and you can double-click to modify the width and height of the light trough.