Turbid black-and-yellow waves surged madly, only to be held outside by an invisible spatial barrier.
The invisible barrier was like transparent glass, forming an extraordinarily vast tunnel. Yellow smoke filled every corner of the passage—the so-called Yellow Springs foul qi.
Gao Xian actually harbored considerable doubts about it, but the foul qi contained within that yellow smoke was indeed so potent that even he found it deeply uncomfortable.
He had to activate his essence wheel and tightly guard his vital essence to keep the yellow smoke from eroding his body and soul.
Those seemingly harmless clouds of yellow dust were like countless tiny insects. They could cling to mana and divine consciousness, even seep through connections of divine consciousness into a cultivator's sea of awareness, contaminating the cultivator's soul.
In his view, this foul qi was like the viruses and bacteria of the cultivation world. Though infinitesimal, it specifically targeted cultivators and was exceedingly dangerous.
The filthy yellow smoke everywhere also greatly restricted the divine consciousness of seventh-rank cultivators. Under such circumstances, few seventh-rank cultivators dared release their divine consciousness freely.
Fortunately, the Great Might Heavenly Dragon Law-Controlling Treasure Seal was unaffected by the restriction and would not be contaminated by the foul qi.
However, the passages of the Yellow Springs Underground Palace twisted and overlapped. Even with the Great Might Heavenly Dragon Law-Controlling Treasure Seal, Gao Xian could not see through the barriers separating space.
Not long after Gao Xian entered the Yellow Springs Underground Palace with Shui Mingxia, the spatial barrier shuddered with a thunderous roar and separated him from Shui Mingxia.
The spatial tremors within the Yellow Springs Underground Palace were somewhat like those in Hidden Dragon Cave, yet vastly different.
These spatial tremors radiated from the center of the Yellow Springs Underground Palace in all directions,