As the six entered, the Yin Qi shrouding the surroundings suddenly seemed to come under someone's control. It had been calm, but in an instant it began roiling without end, surging toward the six of them.
Sensing the deathly aura emanating from within the Yin Qi, Qin Fengming knew that this Yin Qi was worlds apart from what he had encountered at the ruins of the Divine Medicine Sect.
The Yin Qi at the ruins of the Divine Medicine Sect had formed after more than a hundred thousand cultivators of the sect had died at the same time, with all their resentful souls sealed within a confined space for countless tens of thousands of years.
The Yin Qi here, however, had formed naturally since ancient times. The gloomy aura within it had been steeped through an even more distant age. Even the slightest trace could strip an ordinary mortal of all vitality and kill him on the spot.
Though he was within this dense Yin Qi, Qin Fengming still did not summon a protective barrier. At this moment, he actually felt as though he were bathing in a spring breeze.
Sensing this aura, Qin Fengming's heart was also in great turmoil.
He did not know whether this action would bring him benefit or harm, but inwardly, he chose to let nature take its course.
Within the Yin Nether Mountain Range, there were no restrictions prohibiting flight, nor any other restrictions that suppressed divine sense.
But in this land shrouded in Yin Qi, even a Core Formation cultivator's divine sense was greatly hindered. The divine senses of Wen Xinpeng and the other Peak Core Formation cultivators could probe only thirty or forty miles.
With everyone proceeding cautiously, none of them unleashed their full speed. They merely traveled through the Yin Qi