The Black Wind Demon glanced at the sky, the formation lights that enveloped the entire Celestial Dragon Secret Realm swirling around, and said, "Since the Celestial Dragon Secret Realm is now my territory, it should naturally be laid with a dark formation."
As soon as the words fell, the Black Wind Demon quickly formed seals with his hands, his movements as fast as lightning.
Moreover, as the Black Wind Demon made seals with his hands, he was also muttering something under his breath, seemingly chanting some kind of demonic spell.
At the same time, suddenly around the Black Wind Demon, a black whirlwind appeared, with thousands upon thousands of black energies swirling and wrapping around him, completely enveloping him.
In this black whirlwind, the Black Wind Demon's hair and robe fluttered wildly, his expression grim and cold, like a demon from hell.
