Chapter 3638: Boost from a Sacred-Grade Treasure Ground

"I can't see it anymore. That Treasure Ground's been completely sealed off by that demon sea!" "Not just sight. Even spiritual perception is being suppressed!" Outside the Treasure Ground, the gathered powerhouses could only watch as a vast, pitch-black demon sea swallowed the entire area. As for what was happening inside, none of them could sense a thing. The only things that reached them were the violent crash of impacts from within, and wave after wave of formidable shockwaves rolling outward. But...