Will the paper men burned in the dead become real when they go to the underworld?

hehe, first of all, think about it. Are matter and spirit the same? You think matter can cross the spiritual world? This is a self-deprecating statement made by those superstitious religions.

You see, they say that ghosts are very powerful (at least better than people), but they say that substances used by people at a lower level (such as peach swords, rice and paper-painted spells) can restrain the spiritual world. What the hell are they talking about?