The sky was dark red, and the clouds hung so low they seemed ready to drip water. The ground was a stretch of jagged rocks, all covered by a thick layer of gray powder.
These powders were bones that had shattered and, after weathering for tens of millions of years, become what they were now.
At the very center of this world was a marshland. It was not mud, but a viscous substance that had congealed like flesh and blood.
This was the execution ground of Extreme Prison Punishment, teeming everywhere with the auras of evil, decay, ferocity, and death.
In ancient times, before Heavenly Demon City had been established, the place where Heavenly Demon City now stood had been one of the most terrifying forbidden lands in Chaos Heaven. It was called Di Bugui, because even Demon Emperors might perish after entering it.
Yet such a forbidden land had been conquered by an unparalleled powerhouse of the Demon Race, and Heavenly Demon City was established there.
However, no matter how powerful that peerless expert was, he could not completely purify the sinister and dark entities that had originally inhabited the forbidden land. In the end, he used a great Divine Ability to open up an independent space beneath Heavenly Demon City and seal all those things inside.
This was the underground Extreme Prison.
After the vicissitudes of tens of billions of years, the various evil forces within this Extreme Prison had weakened, but they still existed.
The so-called Extreme Prison Punishment was to seal those being punished inside Blood Prison and use their vital blood to sacrifice to the evil demons here.
Generally, martial artists below the level of Demon Lords were only worthy of being sealed in the outer regions of the Extreme Prison.
Only Demon Emperors could