Vray Help Needed: Render appears to ne greyish with or without lights on

Hi! I’m rendering a scene with Vray, and have a problem with lighting. So I’m trying to get some hard shadows with small rectangle light or directional light, but somehow, the scene appears to be greyish when rendering, with or without lights on. I checked through the file, rhino sun is off, volumetric environment is off, but the problem persists. I attached the screenshot of the scene without any light on.

Hello, @peiyun19941216,

In case you have not yet reached out to the V-Ray support team for assistance, please send your scene for investigation to support@chaosgroup.com . I am afraid I can’t propose a solution solely based on this illustration.

Kind regards,