The black air dissipated in vain, as if it had never appeared before, and faded in the air. At the same time, a roar came from the bronze coffin.

"Human cultivator, I am the Primordial Master of Killing Immortals. The precious sword in your hand can cut off the 'Daoyan God Lock'. Let me out, and I will accept you as my apprentice!"

Ning Qi glanced around, the black air was indeed gone, and the voice came from the coffin, so, that guy in the coffin is the strong man behind the scenes controlling the black air? The ancient Tianjiao who was suppressed here by Immortal Emperor Daoyan in Little Stubborn Donkey's Mouth?