How to deal with the rendering of the ceiling without the light strip effect

If the ceiling model is taken from the Cloud material library, it may not include supplemental light strips, so no ceiling lighting will appear when rendering. Please use the multi-purpose light strip in Cloud material – Decoration – Lighting – Fill light to add supplemental lighting, drag it into the light groove, and render the image (Refer to section 234).

If the ceiling is custom-made in the Custom Ceiling section, you can check the creation of light strips and increase the brightness.