Hearing the girl's introduction, Zou Dui frowned, puzzled and asked: "Actually, as long as you close the cave, you can prevent these monsters from entering, why do you want to open the entrance of the cave, let the monsters enter, and sacrifice the clansmen in vain?"

The girl smiled bitterly: "Do you think we want to? You have also seen that our tribe is targeted by a demon, once we close the entrance to the cave, the demon will destroy the entire mountain together......"

Zou Dui was stunned, but he didn't expect it to be because of such a reason. Think about it, the huge mountain-like "Demon Envoy" does have the power to destroy the mountain, and under the threat of the Demon Envoy, it makes sense that the tribe does not dare to close the entrance to the cave, but Zou Dui still couldn't help but say: "Do you continue like this, watching the number of clansmen decrease year after year, until the entire tribe is extinct?"

The girl said quietly: "What can I do...... None of the tribes targeted by the demon can survive, and they can only perish in the sacrifice again and again......"

Zou Dui opened his mouth, but he couldn't speak. He sympathized with the plight of the girl and her tribe, and understood the girl's discomfort and helplessness, but he still knew too little about the world, and there was nothing he could do in the face of the terrifying demon......

After the battle, the entire underground tribe was in action, some preparing for the celebration feast, while others were cleaning up the battlefield and collecting the corpses of their comrades. Zou Dui found that when the bereaved people were cleaning the battlefield, they didn't care about the shiny black crystals on the ground, and they swept them into a pile at random, and they were piled up with garbage.

After the monster dies, it doesn't leave nothing, after most of the body turns into black smoke, it will also leave a small black crystal, and the larger the body, the larger the black crystal will be.

Zou Dui found out in the encyclopedia that this thing is called "magic marrow", which is completely solidified demonic qi. Interestingly, after the demonic qi is solidified, the nature changes, and it loses its strong corrosiveness, and the magic pith looks no different from ordinary crystal jade except that the color is black.

The magic pith is very cherished, the encyclopedia introduces that the magic pith can be used for alchemy and refining, and can also assist in cultivation, which can be described as having a lot of effects, outside, the magic marrow is not sold as a precious gem such as crystal, and its price is far from the best crystal gems dozens of streets!

Zou Dui had picked up a few before, and at first he didn't have time to flip through the encyclopedia, and he didn't know what it was, but now he knew that the precious and rare "magic marrow" in the outside world could be seen everywhere here, and it could be obtained as long as he hunted monsters.

Seeing the bereaved clan treating the magic essence all over the ground like this, Zou Dui's eyes widened when he saw it, and he picked up a magic essence casually and showed it to the girl: "You don't want it?"

The girl glanced at Zou Dui with the eyes of an idiot, and said angrily: "Monsters are evil creatures, full of evil all over their bodies, and the black crystals left behind after their death are also evil, and our people believe that contact will bring us bad luck!"

When Zou Dui heard this, he blinked, rubbed the magic essence in his hand, and began to laugh wildly in his heart, with the "encyclopedia", there is no one in this world who understands the benefits of the magic essence better than him!

This black crystal, which has lost the attributes of demonic energy, is actually the purest energy solid, as long as it is guided by a specific method, it can be transformed into pure five-element yuan force or demonic energy. Therefore, the magic essence is actually an excellent thing to assist in cultivation, and its effect is even higher than that of the elixir!

Although this world is barren and dead, it has such a good thing as "magic marrow", and it seems endless, Zou Dui felt for the first time that it was not entirely bad to fall into this ghost place, in addition to the rapid improvement of cultivation, as long as he can leave here with a large amount of magic marrow, he is afraid that he can become a rich and rival country by transforming himself!

Excited in his heart, Zou Dui began to pick up the magic essence that the remnants didn't want. However, although there are a lot of these magic marrows, most of them are only the size of small fingernails, Zou Dui picked them up for a while, and the handful of magic marrow in his hand is only the size of a palm.

Just as Zou Dui continued to pick up the magic marrow, the old man's voice suddenly sounded in his head: "Young man, you are obviously very interested in these magic marrows, come to the tent, let's talk about ......"

Zou Dui was stunned, got up and looked around, but he didn't see the old man's figure, and instantly understood that the old man was only afraid of having a means similar to his "black and white perception", and he could sense what the people of the entire tribe were doing, and his actions were obviously seen by the old man.

"It turns out that he knows it's the magic ......"

Zou Dui muttered in his mouth, blushing a little.

Originally, he found that the girl and others did not know the magic marrow, and he was extremely disgusted with the black crystals left by this kind of monster, so he naturally picked up the precious magic essence all over the ground with peace of mind. But now, he suddenly found that there were still sharp-eyed people in this tribe, and the old man actually knew that this was the magic essence, so he was a little embarrassed, after all, most of the monsters were killed by the old man and the tribe, and he only killed a small part.

Since the old man has seen through it, let's talk about it seriously and have peace of mind. Zou Dui put the magic marrow he had picked up into the Qiankun bag and strode towards the tallest and largest tent.

When he walked into the tent, Zou Dui found that the old man was looking at him with a smile, and in addition to the young girl beside the old man, the two strong men who had been the most ferocious in the battle before were also standing behind the old man, as if to ensure that the old man was not hurt when he was weak.

Zou Dui also noticed that when the girl came in, she gave him a fierce look, revealing a hint of anger at being deceived. Although it was not intentional, Zou Dui still felt that he was indeed a little wrong, and scratched his head in embarrassment for a while.

The old man sat cross-legged on the warm animal skin, still smiling, and conveyed his consciousness: "Young man, let me formally introduce you, I am the high priest of our tribe, Huosu, and behind me is my granddaughter Ah Duo, and the two martial artists Panshi and Rolling Stone. ”

Zou Dui nodded to the girl and the other three respectively, indicating that he knew the names of the three people.

The old man continued to convey his consciousness and said, "Young man, you need these magic essences, but most of these magic essences should strictly belong to our tribe, you have no objection to this, right?"

Zou Dui nodded again: "Most of the monsters were hunted by you, and most of these demon marrow are indeed your trophies. ”

The old man smiled and said straight to the point: "To tell you the truth, these magic marrow don't have much effect on us, but they are useful for you. In that case, I think it's necessary for us to talk about it, you need magic marrow, and we happen to have accumulated a lot of magic essence in our hands over the years, and I think we can make some transactions on a relatively fair basis. ”