C751 Fire and Water Were Invulnerable
However, the inside of the cave was getting wider and wider. It was big enough for two or three people to walk side by side.
The stone walls of the cave were not just made of stone. In this dark and gloomy environment, they were emitting a faint fluorescent light.
Even though the light was dim, they could still see everything around them clearly.
After walking for about ten minutes
