As the two elders flew out of the exceedingly long tunnel, Han Li was already floating in the sky outside the passage, looking at the top of the canyon and listening intently to something.
At that moment, the two elders realized that once outside, the rumbling sounds that could faintly be heard were even weaker. If it wasn't for the fact that they were all Nascent Soul with sensory abilities far surpassing ordinary people, they might have dismissed the sounds as a passing breeze.
"It seems to be coming from above, and it's very distant. If it weren't for this place being sealed into a closed space by restrictive formations, the echo would be too powerful. We originally wouldn't have been able to hear it," the elder named Fu said, frowning after listening for a moment.
