Ask the 3D god, or the photographer. Why is the light uneven and my 3DSMAX rendering has black spots?

Your picture has a lot of black spots and feels dirty.

1 ? The picture is very dark. Check whether GI is turned on. Turn on GI.

2 ? If GI is turned on, the reason why you say it's not a big problem is probably the uneven light of your picture, because the VR luminescent material has a high sampling value for the scene (generally not as the main light source, you just serve as the main light source), and this sampling value refers to the sampling value of the luminescent map. So is it because you used VR luminescent materials? It's simple. All you have to do is remove all the luminescent materials, light them up and see the effect. If the problem is solved, that is the reason. Here, the sampling value of the glow map is adjusted.

The first picture is an open GI, and the second picture is a sampled value. You can set it to "high" in the preset or adjust it according to my parameters.