The modern world is not the first time human civilization has emerged.
The world has been restarted many times before us.
After every civilization is destroyed, a large number of "old rules" will be left behind:
For example, the real name cannot be called at night, the dead must be buried with the head facing north, the mirror cannot shine on the moon, the child cannot be named before birth, the threshold cannot be stepped on, and the coffin cannot be empty...
These were once true.
Later, civilization restarted and humans forgot about them.
Now, the old rules are beginning to revive.
