This place was not the main passage, but merely a fork in a branch passage.
As he stood at the fork, a faint whooshing sound drifted over from afar. The sound was muffled and contained no energy, yet when it reached their ears, it was strangely clear.
Such an eerie situation appeared without warning, and even Qin Fengming could not help but feel his heart jolt as his vigilance rose sharply.
The sound was ethereal and seemed to come from an extremely distant place. It was as though some enormous bellows deep underground were breathing in and exhaling.
"That sound is extremely far from here, and it contains no spiritual power. It should be some kind of natural phenomenon. It may also be a wind vent, with the Yin wind here being blown out from it."
Only after standing there for a full quarter of an hour did Qin Fengming finally relax slightly and speak.
This was because there was still not the slightest abnormality within the Yin wind here. There was no demonic beast aura; it seemed to be nothing more than Yin wind.
Back then, in the Immortal's Remnant Land, Qin Fengming had seen a place in the Yinhun Domain where Yin mist gushed forth. Although the Yin wind here differed from that place, he could not rule out the possibility that the sound came from a wind vent.
Though the three of them were uncertain, they were no ordinary people. After standing there for only a moment, they stopped paying attention to the repeated moaning and began searching for Yin Sheng Leaves once more.
Four days later, Qin Fengming finally plucked the tenth Yin Sheng Leaf.
Standing at the mouth of a passage, a gloomy expression flickered across Qin Fengming's face, and his brows furrowed slightly.
This