Which one of you can sing this song? What's its name? How? Solve it.

Experimental photographer Uehara developed a unique lens, which he named "Zhou Yu lens" (Chinese translation is a ball suspended in the air. The lens structure is actually a transparent mirror with a transparent glass ball in the middle, which is fixed on the lens with a plastic packaging cup. In order to focus the lens, a close-up lens should be placed at the joint. The shooting effect is amazing. The part of the central sphere presents the effect of fisheye lens, while the surrounding part is soft and fuzzy, as if there is a sphere suspended in the air.

There are mass-produced products now.

The effect is as follows