Chapter 691: The Mark of the Seal, The Black Destruction Serpent Dragon Appears

On a stone platform in the dark swamp.

Ye Feng was sitting on it.

He closed his eyes and activated the [Dragon Vein Technique]. The surrounding spiritual energy swarmed into his body.

With the infusion of spiritual energy, Ye Feng's skin started to turn green. He was like an ancient beast that was letting out deafening roars.

"Hmm, what's this?"

Suddenly, Ye Feng opened his eyes and looked at his right arm.

A mysterious rune appeared on his right arm.

"This is a sealing rune. This sealing rune can suppress the bloodline power of demonic creatures."

"The bloodline power of the Black Fiend Great Demon Emperor is actually sealed by this seal pattern!"

"However, this is only temporary..."

Ye Feng's eyes shone with a bright light.

The blood of the Black Fiend Great Demon Emperor was the blood left by a great sovereign of the Demon race after his death. It contained the will of a venerable sovereign of the Demon race.