Sword bead!
It was a magic tool that only existed in the cultivation world and was differentiated from a sword. It had the size of a pigeon's egg. Although it was round, it could change its shape at will. In addition, its appearance was relatively small. Not only could it save a lot of supernatural power when facing an enemy, it could also achieve an unexpected effect.
This sort of magic tool was not considered a powerful technique. The truly powerful one was the talisman treasure refined by Golden Cores sages. The talisman treasure contained the full power of a Golden Cores sage's attack.
Ning Teng hesitated after hearing what Ye Chen said. He bit his finger and dripped a drop of blood on the sword bead. Subsequently, he picked up the sword bead easily.
With a thought, the sword bead flew out of his hand and turned into a sword gleam, slashing at the stone door in front of them.