Fang Chen nodded and said to the Chaos Heart-Devouring Worm, "Go down!"
At his command, the Chaos Heart-Devouring Worm immediately burrowed into the ground, carving a small hole in the hard stone.
Seeing this, the Moon Saint could not help exclaiming, "The Chaos Heart-Devouring Worm certainly lives up to its name. What an incredible burrower!"
Fang Chen smiled faintly. He had to admit that when it came to burrowing, the Chaos Heart-Devouring Worm was formidable.
The Chaos Heart-Devouring Worm was only a Seven-Tribulation Saint now. If it reached the level of a Nine-Tribulation Saint, it might even be able to bore through the Immortal Trapping Grand Array.
At the Chaos Heart-Devouring Worm's level, its strength would grow tremendously each time it survived a Heavenly Tribulation. But advancing even one level was extraordinarily difficult.
Still, Fang Chen was confident he could help the Chaos Heart-Devouring Worm reach the level of an Eight-Tribulation Saint, or even a Nine-Tribulation Saint.
Fang Chen immediately sent the Chaos Heart-Devouring Worm a message through his Soul Power. "Chi You, what's it like down there?"
"Master, the rock down here is so hard I feel like my teeth are about to fall out! I've only dug twenty zhang deep so far!"
The Chaos Heart-Devouring Worm's voice echoed through Fang Chen's mind.
Fang Chen sent another message. "Have you found anything unusual down there?"
The Chaos Heart-Devouring Worm replied at once, "No!"
Fang Chen frowned slightly, then told the Chaos Heart-Devouring Worm, "Come back, then. The Immortal Trapping Grand Array reinforces the ground down there, so the rock is extremely hard. Even with your current strength, you might not be able to bore through it!"
"Master, I want to try a little longer. I want to see where my limit is!"
The Chaos Heart-Devouring Worm's voice rang out