I Found a Crystal Skull from the Start

A parallel Earth, hundreds of millions of light-years away.

On a particularly rotten day, an advanced alien civilization that had imprisoned humanity began a particularly rotten experiment:

They released various mysterious alien creatures onto Earth to slaughter humans at will.

The experiment was meant to test what kind of social reaction humans, as a species, would exhibit when faced with danger after evolving for hundreds of millions of years.

Then, inside a small cave, Xue Guo found a crystal skull, pristine and dazzling beyond compare!

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Please do not imitate.