Thousand Deep Cave:
Inside the Abyssal Worm, Lin Fan had no idea how long he had been in here. Anyway, most of the yuan crystals scattered across the Abyssal Worm's body were pretty much dug up by him. Sometimes, some yuan crystals were so deep that he had to take out the three sovereign swords to slowly dig them up. And when he was digging them up, he felt obvious shaking around him. Perhaps the Abyssal Worm was in pain.
At this moment, he halted his footsteps, staring at a ginormous oval thing that was glowing red.
This glowing red thing had black meridians over its surface that were connected to almost everything, stretching to the unknown depths.