Mu Guyue soon made a discovery amid the black rock strata that crisscrossed like spears and swords: a continuously spinning vortex of devilish qi.
She watched from the shadows for a long while. Only after confirming that there was no immediate danger nearby did she quietly approach.
As she drew nearer, her Divine Sense remained spread across a hundred zhang around her. Then Mu Guyue's body appeared in a half-illusory state above and to the side of the devilish qi vortex.
Mu Guyue extended a slender jade finger. A dim black gleam of devilish qi flickered at its tip as she slowly inserted it into the vortex, inch by inch.
After quite some time, Mu Guyue withdrew her finger, a trace of surprise appearing on her face.
"There are no formations or restrictions sealing it off. It is merely a devilish qi barrier, refined to nearly a hundred zhang thick."
Perhaps this demonic beast had occupied this place for countless years and had long since secured its territory, so it had not even bothered to set up defensive restrictions.
Seeing that no formation restrictions had been laid down, Mu Guyue gritted her teeth and flew inside.
The moment she entered, Mu Guyue immediately understood why the other party had not set up any formation restrictions. There was simply no need.
This devilish qi barrier, a full hundred zhang thick, was more formidable than most restrictions. The refined devilish qi within it vibrated slowly at a strange frequency.
At first, she noticed nothing amiss. But as she went deeper, the devilish qi already restless within her body began to vibrate along with the flowing devilish qi outside her.
By then, she had advanced less than thirty zhang, yet the devilish qi in Mu Guyue's body was shaking more and more violently.