The deeper they went, the worse the air smelled.
Apart from the light from the torchlight, everything around them was dark. The underground tunnels were spacious, much bigger than Gao Peng had imagined. The walls were covered with brick, although the bricks had fallen off in some areas, exposing the mottled rock wall beneath it.
Da Zi and Stripey's hard claws impacted the ground sharply as they walked, making crisp and clear footstep sounds that reverberated in the air, echoing very far away. Of course, amidst that steady rhythm of footsteps were the sounds created as Flamy leaped along and chirped occasionally.
After ten minutes or so, they reached a tightly shut giant alloy door. When the light from the flashlight moved over the surface of the large door, the copper alloy emanated a hazy color.
Da Zi suddenly straightened its head and almost at the same time, Stripey also raised its head in alarm and began making threatening noises from its mouth.