The Black Flame Mountain Range lay in the southwestern region of Blazing Sun Planet, stretching for tens of millions of miles. Demon beast resources were abundant here, and quite a few fifth-rank demon beasts roamed the area, drawing numerous cultivators to hunt them.
In a secluded underground cavern at the northeastern corner of the mountain range, three men and one woman were frantically attacking the stone wall on the right.
A red light barrier covered the surface of the stone wall, bearing the image of a flame. Through the red light barrier, they could see a humanoid skeleton.
The skeleton wore a tattered golden robe. A golden storage bracelet was on its right skeletal hand, while its left skeletal hand was nowhere to be seen. All its ribs were shattered, and its right leg was missing. It appeared to have suffered grievous injuries before death.
"Put some more effort into it. We should be able to break it soon."
An elderly man in a blue robe, tall and thin of build, urged them on.
Song Zihai was Song Qingqing's clansman, a late-stage Spirit Transformation cultivator. He had been ordered to search for Gan Yang True Lord's cave dwelling where he had passed away. They had some clues in hand and had only found this place after great difficulty, but the restriction was simply too powerful.
The blue-robed elder formed a hand seal, and a giant seal flashing with blue light smashed into the golden light barrier with a dull boom.
The other three increased the force of their attacks in succession. Explosions rang out without end as multicolored spiritual light drowned the golden light barrier.
More than half a day later, the four stopped attacking the restriction. Their faces were pale, and they looked as though they had exhausted too