After everyone else had left, Fang Chen, the myna bird, the Chaos Heart-Devouring Worm, and the Chaos Demonic Star Vine remained inside the Swallowing Heaven Tower.
Fang Chen took out the Iron Fragment he had obtained in the Purple Thunder Immortal Emperor's Palace.
The others' gazes fell on the Iron Fragment as well.
They had entered the Purple Thunder Immortal Emperor's Palace with Fang Chen. Although they had hidden inside the Swallowing Heaven Tower at the time, they had all seen him take the little Iron Fragment.
The myna bird asked Fang Chen, "You still haven't figured out what this Iron Fragment is?"
Fang Chen shook his head. "I've tried every method I could think of, but the Iron Fragment hasn't reacted at all!"
Just then, the Chaos Heart-Devouring Worm came over. He leaned close to the Iron Fragment and sniffed it, then swallowed. "Master, I feel like this thing would be delicious!"
"Delicious?"
Fang Chen looked at the Chaos Heart-Devouring Worm and raised an eyebrow.
"Yes!"
The Chaos Heart-Devouring Worm nodded vigorously.
"In that case, it's yours. Let's see if you can eat it!"
As he spoke, Fang Chen handed the Iron Fragment to the Chaos Heart-Devouring Worm.
"Thank you, Master!"
The Chaos Heart-Devouring Worm bowed in thanks, then took the Iron Fragment. Under Fang Chen's and the myna bird's watchful gazes, he opened his mouth and bit into it.
Crack!
Fang Chen and the myna bird both heard metal fracture.
The Chaos Heart-Devouring Worm frowned.
Fang Chen could not help asking, "What's wrong?"
The Chaos Heart-Devouring Worm replied, "This thing is hard. It's even harder than the Immortal-Binding Chain on the Immortal-Locking Platform in the Abyss of Annihilation!"
"Harder than the Immortal-Locking Chain?"
Fang Chen and the myna bird were both surprised by his words.
"Yes!"
The Chaos