"Black and white impermanence" is just a misunderstanding. More than two hundred years ago, a pair of young people living in an ancient temple saw two hazy figures with tall cylindrical hats on their heads, so they naturally thought that they were the legendary "Impermanence" Black and white impermanence" is actually not the same thing at all. However, it induced the ugliness of human nature and gave birth to a story.What runs through the story is an imagined "degeneration phenomenon", which is completely opposite to the evolution phenomenon. After receiving the signal of regression, the cells of living things begin to degenerate. If it is a squid, it may degenerate into an ammonite. It is possible to degenerate into primitive humans. If all living things degenerate along this path for millions, tens of millions, or even tens of millions of years, then, although the dead things on the earth are all modern, in fact On the other hand, the earth has entered the prehistoric era again.

Such degeneration, in fact, is very unlikely to happen.But the degeneration of people's thinking is going on. There are a group of people who are clearly modern people, but their thinking has degenerated to the feudal era. Or maybe, the thinking of this kind of person has never evolved, and it has been stuck in the feudal age. This situation is more terrifying than the appearance of a real impermanent ghost!