How are these shoes taken? What should I do if they are PS?

I looked around and replied that none of them had photographed the product.

The main light is a large flat light, which is in the same position as the plane.

There is a reflector on the left side of the auxiliary lamp.

There is not much ps processing. The background is washed white, the contrast is sharpened, and a 50% gray soft light layer is superimposed. Emphasize the outline with a brush.