I uploaded many pictures of the black background. But all of them be rejected. The reason for all: Poor lighting setup, poor contrast or incorrect exposure.
I browse the existing picture, found many photos with black background. For example:

I observed the rejected photo, normal exposure. If i changed to a white background, these photos should be acceptance ratio more than 50%. For example, I've taken photos of a white background.

How to shoot pictures of the black background? What kind of black background pictures that can be accepted?
Please BuLinCiJiao. BuLinCiJiao is a Chinese proverb, it means: Do not begrudge your views, hopes to receive guidance:)