Kapitel 1211: Chapter 706: The Immortal-Slaying Flying Knife! The Yuan King Arrives

The hundred-mile demon wind pressed the boundless dark night down as if plunging it into purgatory.

The peaks like knife shaves shook unsteadily, the [Dark Obscure Box] summoned by the Night bat dragon was no ordinary item.

It was an antique, with a long inheritance.

Back then, the Black cave ranked among the Seventy-Two Demon Caves, and its First Generation Demon King was the Bloodwing Bat King.

It found this treasure within ancient ruins in the Hundred Thousand Great Mountains.

From that time on, the [Dark Obscure Box] became the ultimate treasure of this lineage, passed down through generations.

Before the Bloodwing Bat King died, it had once said that if any of its descendants could master the mysteries of the [Dark Obscure Box], they could dominate the world as the supreme Demon Ancestor and pull down the lineage of the [Black Emperor], which had dominated for 3000 years, from their throne.