C1761 Find the Problem

"So difficult?" Lee Yifann was shocked. "It can't be? He couldn't even see the real faces of those insects with a microscope."

"Yes! It's very strange. The microscope can even see a cell clearly, but it can't determine the faces of those bugs. I suspect that the bugs in Phoenix-Tail Ghost Snake's mouth are so small that they are molecular or atomic. " Lee Wenyan smiled bitterly