C70 Causing mood instability

The cave wall was formed from a type of vermillion red rock. The moment Lu Zheng stepped into the cave, he could feel that the vermillion rock on the cave wall was constantly emitting a scorching aura, which faintly formed a wave of heat.

"What kind of rock is this?"

Lu Zheng curiously caressed the vermilion stone. It felt very fine to the touch, as though he was caressing a jade