The cave was very deep, but with almost no branching paths. The air inside was somewhat thick, making me feel a bit dizzy.
I silently cursed myself. Having read so many novels where people dug deep into the earth, why hadn't it occurred to me to bring a flame test to check the oxygen level before heading underground?
Xue Shisi didn't seem to react much, following closely behind me. Aside from her breathing being a bit heavy, I couldn't tell if she was just nervous or actually scared.
Chapter 56