Principle: Chocolate pieces cut out of the surface seems to be able to fit each other seamlessly, but only because the slope of the cut is the same, the final rectangle is shorter than the initial rectangle to a small cut, and these few missing "! The area of the missing "cut-offs" happens to be the area of one whole extra block, and chocolate can't be added out of thin air, it's all just a visual mismatch. "Infinite chocolate" is a picture that has been widely circulated on the Internet, showing a seemingly incredible way to "eat chocolate," where an ordinary rectangular block of chocolate is cut, moved, and reassembled to create an extra piece of chocolate than the original. There is an extra piece of chocolate than the original.