Although Fang Chen was already immensely powerful, he still advanced one careful step at a time. After killing a Demon Emperor, he absorbed and refined its corpse before heading to the next Forbidden Zone.
In the days that followed, wherever Fang Chen went, the inhabitants of any populated Forbidden Zone lined up at its entrance to await him. He did not attack them, even though many were Quasi-Emperors whose bodies held considerable Source Power of Emperors.
After Fang Chen killed the sleeping Ancient Emperor or Demon Emperor in each populated Forbidden Zone, its inhabitants offered him their local specialties.
Ten years later.
Fang Chen had cleared another Forbidden Zone, the last one on Immortal Forget Island.
That final Forbidden Zone was Immortal Gazing Mountain. A crocodile slept there. It was formidable, but had only a thousand years of Lifespan left; two strikes from Fang Chen's Floating Immortal Sword killed it.
Immortal Gazing Mountain was home to a colony of Seven-Colored Spirit Butterflies. They were enormous: an adult's wingspan exceeded a thousand zhang. They were arguably the strongest race on Immortal Forget Island, and their numbers were astonishing. More than five hundred of them were Quasi-Emperor-level experts.
Holding a Gourd, the Butterfly Queen said to Fang Chen, "Your Majesty, this Gourd contains our specialty from Immortal Gazing Mountain: Immortal Forget Water. It has powerful detoxifying properties. Over two hundred years ago, a member of the Devil Race infiltrated Immortal Forget Island and stole a great deal of it!"
"A Devil Race expert came here over two hundred years ago?"
Fang Chen was surprised to hear this.
"Yes!"
The Butterfly Queen nodded slightly. "I was in seclusion at the time. Otherwise, that Devil Race intruder would never have escaped!"
The Myna bird sent Fang Chen a mental message: "Fang Chen, that intruder