```
The three of them stealthily made their way to the side of the cave and strained their ears to listen for any sounds coming from within.
After listening intently for a solid thirty seconds and detecting no noise, Xia Feng gave Zhao Yang a meaningful look, indicating that it should be safe.
However, Zhao Yang picked up a stone from the ground and tossed it into the cave.
"Clang... thud thud thud..."
The stone hit the cave wall and then bounced a few times on the ground. Due to the cave's acoustics, the sound was very distinctly carried outside.
Once the sound of the stone ceased and silence returned, Zhao Yang nodded toward Xia Feng, who then took the lead in entering the cave.
By this time, the sky had brightened a little more, and the visibility in the jungle had improved significantly. Although it was still dark, their eyes could now clearly see things dozens of meters away. The light in the mountains, obstructed by the dense canopy above, was poorer than outside.
