After discovering that the poisoner was actually the rare insect demon beast "Illusory Spirit Jade Butterfly," Zhouyang was not in a hurry to eliminate the demon.
He knew that the "Illusory Spirit Jade Butterfly" had a characteristic: it would choose the area with the highest quality Spirit Jade distribution within a Spirit Jade vein as its habitat.
This demon beast also had a special ability, which was to merge itself into the Spirit Jade and sleep, like an insect in amber.
Therefore, unless you see the "Illusory Spirit Jade Butterfly" with your own eyes, even if a piece of Spirit Jade right in front of you contains one of these butterflies, you would not detect any aura from it.
Zhouyang kept watch for most of the night, and the butterfly danced under the moonlight for most of the night as well.
When it was either tired from flying or had absorbed enough Moonlight Power, the "Illusory Spirit Jade Butterfly" finally started to move.