First question. Why is a spark nearly indestructible? What makes it such a resilient existence? Why is it able to traverse the void between universes when nothing else can?
Second question: What happens to a black hole's core when it leaves its event horizon? When a black hole exists for enough time, it loses mass through Hawking radiation. Eventually, its core will also disappear. But where?
Wang Feng had a hypothesis. The two were one and the same. Confirming the hypothesis was fairly easy. Keep creating tiny black holes by crushing a small amount of material into one point and letting the resulting tiny black hole fizzle out. After that, try to reanimate an empty body using those particles.