C636 Lower Darkroom

It seemed like a dark room.

Nian Qingci casually took out her fire piston and slightly shook it to ignite the flame.

He then extended his hand into the hole.

The small flame was moved by the wind, but it did not go out.

"Looks like this cave can be ventilated, and there's also oxygen inside." Nian Qingci muttered to herself before taking back the fire piston in her hand and blew on it