Xiang Yang and Nan Fenglan had barely stepped into the dim mountain cave when a strange sensation took root and spread through their hearts, as though countless eyes all around them were blinking and peering at them. Goosebumps rose across their skin of their own accord.
That was not all. The cave was permeated with incomparably sharp Geng Metal Qi, its edge keen as a blade. It had accumulated in such abundance that it drove away every other kind of spiritual energy in this space. It was as though they had entered a mountain of blades and sea of swords, chilling them to the bone and making the backs of their necks prickle.
Xiang Yang knew that this was the backhand left by the expert who had laid down this grand formation long ago. He had drawn out the Mountain Spirit Energy and transformed it into Geng Metal Qi, then used that Geng Metal Qi over more than a century to nourish the copper mine. One side helped the other onward, increasing without end—this was an ultimate method of turning Heaven and Earth to human use.
Under such methods, even heavenly-human experts had to remain fully alert. Otherwise, they could easily fall into danger and have their lives threatened.
Xiang Yang drew a deep breath and advanced step by step with Nan Fenglan. Their dripping footsteps rang crisp as water drops boring through stone as they gradually entered a broad tunnel.
A breeze darted through the passage, and before long they arrived at the entrance to a hollowed-out stone chamber.
The two stood outside the stone chamber and observed it.
They saw that the chamber door had already been forcibly smashed open. The pillars on both sides bore cracks and slash marks in wildly uneven patterns, while the gap above