Powerful Yin Qi coalesced into form and pounced straight at Zhou Wuji.
Yin Devils were beings born from Yin Qi. They possessed only a trace of innate spirituality and had no true intelligence.
Only by devouring cultivators could they obtain some knowledge from their memories.
Only by continuing to grow in this way could they develop true intelligence.
The Nine Yin Underground Palace was completely sealed off and regularly cleared out, so these Yin Devils had no chance to grow.
When Yin Devils sensed the vitality of a living being, they instinctively rushed toward it without considering whether there was any danger.
With his Six Yang Spirit Eyes at the perfection level, Zhou Wuji could see every Yin Devil with exceptional clarity.
Whether or not they had taken form, he could see the trace of vital spirituality at the core of each Yin Devil.
For Fourth Rank cultivators, the true threat of these Yin Devils lay in their overwhelming numbers. They knew no fear and surged forward like a tide.
If the Yin Devils were not cleared away quickly, the Yin Qi they gathered would grow stronger and stronger, invading the cultivator's body and Divine Sense before finally devouring all their vitality.
Zhou Wuji wore the Pure Yang Lotus Crown. As long as he activated his True Qi, it could release Pure Yang Law Power and keep all Yin Qi outside.
As a First Rank Law Artifact, the Pure Yang Lotus Crown did not hinder him from projecting his True Qi or using Law Power, nor did it affect the power of his Law Techniques. That was what made it so exquisite.
Zhou Wuji drew the Tianshu Sword. Its deep-blue blade traced a semicircular arc of light through the dim hall, sweeping across more than ten zhang in every direction.