Yang Chengzhi fixed his mind and walked towards the mine cave mentioned in the mouth of the spiritual creature, the spiritual thing under the main peak belongs to the dog, in the area where they grow, there is no ethereal stone in Yang Chengzhi's mouth, maybe the ethereal stone is stored on the main peak, and there is no plant in the cave under the main peak, they remember that there are humans in and out of this cave to mine, so it is guessed that the ethereal stone should be in this mine.

Standing at the mouth of the cave, Yang Chengzhi thought for a while, pushed aside the green vines on the entrance of the cave and entered the cave, passing through the gap less than one meter wide, and the area inside suddenly became larger, almost seven or eight meters wide and more than five meters high.

However, what made Yang Chengzhi puzzled was that there was no trace of artificial excavation in the cave from the situation of his cave, this cave was completely naturally formed, and it was not like the situation he collected, which was a mining cave.

With doubts, Yang Chengzhi took out a night pearl from the ring and held it towards the depths of the cave, about thirty meters out, when he couldn't feel the light of the outside world, the night pearl shone into a small pit on the wall, and Yang Chengzhi was convinced that there were indeed traces of human activities here.

Because this pit is not naturally formed, he is obviously artificially dug out, and there is a brown substance in it, Yang Chengzhi touched it with his hand, and the brown substance immediately turned into fly ash.

When Yang Chengzhi wanted to continue to face in, among the little dragons and sunspots who came in behind him, the sunspots' eyes flickered a few times, and cold light emanated.

"Boss, I'm afraid it's not calm here, be careful, I feel that there are creatures in this cave."

。

Hearing what the sunspot said, Yang Chengzhi's footsteps froze, turned his head, and his face also showed a trace of solemnity, the sunspot is now a strange beast at the level of the void, with the bloodline of the ancient mastiff, he must be able to feel the breath of danger, he can say this, obviously there are species in this cave that have reached the level of strange beasts.

Because of the warning of the sunspot, Yang Chengzhi was much more careful when he walked forward again, and he would feel the situation ahead every few steps.

Continuing to walk inside, the cave became narrower, the width was only three or four meters, the ground became rugged, and from time to time there were small holes on the cave wall that could be entered by one person, and the clutter of rocks was piled up on the outside of the small holes.

Some small holes for one person to enter and exit, Yang Chengzhi has been convinced in his heart that this is a mine cave nearby, otherwise, there will be no these small holes and messy rocks here, obviously the ancients dug ore inside, took away the ore and the stones were randomly piled up outside the small hole.

Yang Chengzhi didn't enter these small holes, but he found out that these small holes were stored in zài, which means that the ore inside has been mined, and he won't gain anything if he goes in.

After walking for hundreds of meters, the kind of small holes became less and less, and there was one out of more than ten meters, and Yang Chengzhi also had an iron vertebrae the thickness of an adult's arm and rusty on the ground, which was obviously the tool used by the workers to dig ore back then.

Yang Chengzhi's eyes flickered a few times, and he bent down to pick up the iron vertebrae, and when he got it in his hand, Yang Chengzhi's face changed slightly, and his heart was shocked, this is not an iron spine made of steel, and an iron spine made of steel has no such weight.

The weight of this iron spine is at least more than 100 catties, he is cast from steel mixed with a certain mineral, and the workers who excavated the ore back then were not ordinary people, because ordinary people could not wield a large iron vertebrae of more than 100 catties to dig ore, and the one who excavated the ore must be a cultivator.

Thinking about it for a while, he wanted to find the ethereal stone, Yang Chengzhi put this iron spine into the ring, and now the tools of his own space cannot be used in this place at all, and if you want to mine ore, you must have such a tool.

After walking out of dozens of meters, a small hole appeared, Yang Chengzhi guessed that this mine had not been mined for much time, perhaps for some reason this mine was finally deserted.

Walking back and forth in the mine for a few steps, Yang Chengzhi stayed in a slightly concave place in front of the cave wall, took out the iron vertebra from the ring, and Yang Chengzhi waved the iron vertebra to the dented place.

"Sonorous ......"

Symphony of gold and stone.

Sonorous and piercing, sparks splashed everywhere, but the place where the iron spine touched did not move at all, only a white mark was left on it, Yang Chengzhi staggered back two steps, waved his palm, and slowed down the special passage of the palm, in the middle of the iron vertebrae, the rust on the iron vertebrae all fell off, revealing the original color of the iron vertebrae, dark and shiny.

Yang Chengzhi's face changed slightly, and he said in his heart: What kind of rock is this, if the general bluestone is such a thick iron spine even if it falls gently, there will be a big pit, although he didn't use the exercises just now, but the strength in his hand is not small, how can he only leave a shallow mark.

Twisting the head of the dragon, the body of the little dragon is the dragon, their family is familiar with the situation of minerals, this kind of rock he should know, he thinks that the dragon has a way to this kind of rock, if there is a way, he can save a lot of trouble.

But he didn't want Xiaolong to shake his head, "Boss, this rock is also quite troublesome for me, he is not an ordinary rock, he was formed through a special movement, there should be a kind of nocturnal crystal in it, and there is also an associated ore of noctilateral crystal is the ethereal stone." Hearing this, Yang Chengzhi's face was happy, he didn't think about what kind of ore this night spar was, he just felt happy when he heard the ethereal stone storage. Yang Chengzhi, who was full of joy on Xiaolong's face, said speechlessly: "Boss, don't you want to know what kind of mineral night crystal is." Listening to Xiaolong's words, Yang Chengzhi was stunned, he hadn't come into contact with the refining weapon yet, so he wasn't very keen on ores, and he didn't know what kind of storage this night crystal was, and now listening to Xiaolong's words, his heart moved, could it be that this night crystal is a more precious mineral. Cheng Zhi looked puzzled, and Xiaolong smiled, "Boss, do you remember the kind of luminous thing you saw in the Loulan Kingdom?" Hearing this, Yang Chengzhi's eyes lit up, and he lost his voice: "Xiaolong, the night crystal you said is the ore that can shine in the dark", he wanted to find this kind of ore in the underground palace of Loulan Ancient City, but he didn't want this night crystal to be that or that ore that could glow. Xiao Long nodded, "Boss, this night spar is the kind of ore you see that can glow, and he can shine when he mines it, as long as he carves it and puts it in the right groove." Yang Chengzhi was ecstatic when he heard this, this is a good thing, if he has this ore, it will be of great use to him in the future. Thinking of this, Yang Chengzhi's body moved, and a faint energy fluctuation floated from his body, and the iron vertebrae in the second-hand also emitted a faint light. Ke Fanfan then thought of the holes outside, no wonder the holes outside were so small, it turned out that the rock was too hard, even if you wanted to mine the big ones, it was difficult. The iron spine in the glow, Yang Chengzhi's heart was shocked, this iron spine is not ordinarily forged, this iron spine must be refined by a refiner, otherwise it is impossible for this internal force to be infused into it. After thinking about it, Yang Chengzhi waved the iron vertebrae a few times in the air, and slammed it towards the rock wall, "boom", a muffled sound came out, the hard stone wall trembled, the gravel splashed, and the stone wall as hard as steel was blasted out of the size of a head. A pothole the size of a head, the corners of Yang Chengzhi's mouth twitched a few times, he is now a real master in the middle stage of returning to the void, but he can only blast out such a pothole, what kind of material is this rock, if this is a building, even a cannon can't help this kind of rock structure. Rubbing his numb arm, Yang Chengzhi ran the Chaos Technique again, thinking that he should hone his martial arts skills and temper the strength of his body in this place. The chaos trick was running, the energy on Yang Chengzhi's body fluctuated rapidly, and the iron spine in his hand burst out with pitch-black light, bombarding the pit just now again. A muffled sound came out again, echoes echoed in the cave, a large piece of rock was chiseled down by Yang Chengzhi, the corner of Yang Chengzhi's mouth twitched, the energy on his body fluctuated again, and the iron spine in his hand blasted out again. The sound of "sonorous and sonorous" came out from time to time, and pieces of rocks fell off and fell to the ground, and in more than ten minutes, a large hole with a diameter of about one meter appeared in front of Yang Chengzhi. Just when Yang Chengzhi danced the iron spine again and wanted to blast into the big hole, his eyes couldn't help but tighten, and he was stunned to take back the iron spine, and there was a piece the size of a child's head in his seventy or eighty centimeter-deep hole, and the pale cyan ore exuded a faint light. Yang Chengzhi withdrew the iron spine and turned his head to the little dragon in the distance, "Little dragon, is it a night crystal." The little dragon's body moved, and when he arrived in front of the big cave, the ore inside, nodded, "This is the night crystal, just take it out, the night crystal and the ethereal stone are embedded in this kind of rock." Yang Chengzhi nodded, and when he put down the iron spine, he felt that his arms were sore, and the night crystal in the pit, the corner of Yang Chengzhi's mouth twitched a few times, the thing is a good thing, but it is difficult to mine, and the cultivation of the virtual level, it takes more than ten minutes to get a piece, and if you want to get a few more pieces, how long does it take. Then he thought of the holes outside, no wonder the holes outside were so small, it turned out that the rock was too hard, even if he wanted to mine the big ones, it would be difficult. Rubbing his numb arm, Yang Chengzhi leaned in and took out the night crystal, to his surprise, this night crystal is not as heavy as a rock, and a piece of ore the size of a child's skull is at most two or three catties. Taking out this piece of ore, Yang Chengzhi's eyes showed a trace of doubt, he is an ore that exudes dazzling light, but there is only a faint luster on this ore, what is going on.