C182 Explosion Furnace

A rumbling sound suddenly came from inside the cauldron. The violent energy whizzed and crashed into the walls of the cauldron. The bell-like loud sounds shook the minds of the two people sitting beside them until they began to rumble continuously.

"What's going on?" Zheng Yun's expression suddenly changed when she saw the abnormality within the mountain and river cauldron.

"I'm not sure