Po Suo reached out to accept the damaged feather. After staring intently at it for a moment, she said, “The feather’s source power has already disappeared completely. All that remains is a trace aura of calamity…”

Here, she paused. “Huh?”

It seemed she’d discovered something new.

As she pondered, the bright red dot between her eyes rippled and revolved, and her distant, starry eyes shone with flecks of gold light.

A little while later, Po Suo exclaimed, “The feather hides an almost indiscernible strange imprint. Please have a look, Fellow Daoist.”

Her slender finger brushed against the surface of the black feather.

Weng!

The feather trembled, then surged with wisps of gray flame, condensing into a taboo rune. The rune flashed, outlining a mysterious wheel.

However, the wheel of light was illusory and ethereal. Even the runes were indistinct.

But Su Yi could tell at a glance that when the Nine Serenities Netherworld Crow fled, it used the power of this very taboo wheel!

“I heard that in ancient times, the Netherworld King controlled nine taboo treasures, which were called ‘the Netherworld King’s...