Hearing Tang Yu say this, Chi Qiu's expression looked gloomy and terrifying. He snorted angrily: "I didn't expect that Chi Qiu, I, would have been deceived one day. Your uncle, don't let me see you again next time, otherwise I will definitely kill you."

Chi Qiu raised his fist and roared towards the bloody sky.

Unfortunately, the person who created that huge vortex should have left now, so naturally no one will respond to him.

The other strong men in the Demon Refining City finally reacted at this time, with fear on their faces full of fear and lingering fear. They raised their heads carefully and looked at the sky, afraid that a huge vortex with a terrifying aura would appear again in the sky above their heads.

"Master Hai City, I would like to remind you that Cui Xiaoliang of the Cui family is not dead yet. The elder of the Cui family they mentioned now doesn't know what the situation is. If he is also subdued by the lord of Cui Xiaoliang and becomes a member of his subordinates, then the Demon Refining City may be in danger now."

Seeing that the Hai Demon Heart was actually a fearful expression, and his eyes kept glancing at the sky, Tang Yu couldn't help but snorted coldly and said.

Hearing Tang Yu say this, Hai Demon Heart reacted, exclaimed, and hurriedly said, "Everyone hurry up and go back to the Demon Refining City. No matter what it turns out here, this ore vein has almost been destroyed anyway. Let's go back to the Demon Refining City immediately and don't let others take their nests."

Hearing the roar of the sea demon heart, the others also realized something, and agreed with the sea demon heart's statement and flew towards the Demon Refining City at the same time.

However, these people were still very self-aware before leaving. When they passed by Tang Yu and Chi Qiu, they both showed a look of gratitude and thanked Tang Yu and the others.

Tang Yu waved his hand and looked indifferent. After sending these people away, Hai Moxin also said to Tang Yu: "Mr. Tang, are you going to go back to the Demon Refining City with us now?"

"I am quite interested in this mineral vein. I want to explore its situation and instantly see the insect spirits here. It should be fine!" Tang Yu asked deliberately with a smile on his lips.

"No problem, of course no problem." Hai Demon Heart waved his hands repeatedly and said.

Not to mention that the mine vein has almost been abandoned, but even if Hai Demon Heart wants Tang Yu and his group to support him, it has already done it.

Even if Tang Yu has not returned to the Demon Refining City with the Sea Demon Heart, I believe that the senior executives of the Demon Refining City will not dare to make things difficult for the Sea Demon Heart again.

"Haiya, just follow Mr. Tang and take them to see the insect spirits." Hai Demon Heart reminded Haiya with a smile.

Tang Yu looked at Hai Moxin calmly, and after a smile appeared on his face, he flew into the ore vein.

"Haiya, lead the way!"

"Do you go directly to the places where those insect spirits are?" Haiya asked.

"That's right!" Tang Yu nodded and said.

Hai Moxin saw Tang Yu flying directly into the depths of the ore veins under the leadership of Haiya. He didn't talk nonsense anymore, but chased the senior officials of the Demon Refining City who had already left, left the Demon Refining City, and flew towards the Demon Refining City.

Tang Yu's words just now were not meant to be alone for the Hai Demon Heart. Other senior executives of the Demon Refining City also heard that Tang Yu was going to investigate the insect spirits in this mine vein.

If it were another time, even if Tang Yu and Chi Qiu showed such strong strength, the senior executives of the Demon Refining City would probably not agree to Tang Yu's proposal, but now... no one dared to refuse.

However, looking at the reactions of these senior executives of the Demon Refining City, we can actually see that they actually have no intention of objection.

"Haiya, can you give me a brief introduction to the situation of these insect spirits? I am talking about the situation outsiders don't know." Tang Yu made a request when Haiya took them to the place where the insect spirits were.

"The insect spirits are fake. They are spiritual insects refined by humans." Haiya thought for a moment and said this to Tang Yu.

"What?" Tang Yu showed a shocked look on his face when he heard Haiya's words, and he asked quickly: "What's going on with this spiritual pattern insect?"

"It's like a puppet! But these bugs don't have their own wisdom and are not strong enough, they..."

"You wait..."

Tang Yu frowned and reached out to stop Haiya's explanation. He turned his mind a little, thought about something, and asked, "I heard that if those insect spirits are eliminated, there will be no evil magic crystals that can be refreshed. Since these insects are insects refined with spiritual patterns, where do these evil magic crystals come from?"

"I don't know either."

Haiya shook her head, showed a wry smile on her face, and said, "This thing, not to mention me, even anyone in our Demon Refining City, may not know. Otherwise, she would not have invested so many human corpses every time to feed these insect spirits. We just discovered that these insect spirits, after devouring the corpses of living beings, can refresh the evil demon crystals, so that they will do this."

"Then you have checked, is the spiritual patterns on these insect spirits useful?" Tang Yu suddenly thought of the crack space he found, so he asked quietly.

"The function is to transform!" Hai Yasi thought for a moment and said, "I suspect that the refreshed evil demon crystals actually devour the corpses of creatures through these spiritual patterns, and then further condense and transform the energy in these corpses, turning them into evil demon crystals, and refresh them in these mines."

"Is this really the case?" Tang Yu looked at Haiya with a fierce look and asked again: "Didn't you expect that these insect spirits really have such a fast transformation speed? I heard that after these insect spirits ate the corpse, the new evil demon crystal was refreshed after not long after they waited."

"this……"

When Haiya heard Tang Yu's words, she was stunned because she had never considered this matter.

To be precise, I didn't think of this at all.

Now that he heard Tang Yu say this, Haiya kept thinking in her mind, and then blurted out: "Do you mean that these spiritual patterns are just a mechanism to inspire the refresh of evil demon crystals. These evil demon crystals were transferred from other places?"

"This is the only possibility." Tang Yu shrugged and couldn't help but look at Haiya, because he didn't expect that after just saying such a few simple words, Haiya could guess so much. This girl was indeed extraordinary.

"Can you find the place where these evil demon crystals are refreshed? As long as you find it, even if this ore vein is abandoned, it will not have any impact!" Haiya said excitedly, and at the same time, her two beautiful big eyes stared at Tang Yu without blinking, as if she wanted Tang Yu to tell her where this place was.

Tang Yu suddenly burst into laughter and cried, looking speechless, looking at Haiya, and then said:

"Haiya, why do you look at me with this expression? I haven't even touched the insect spirits. How do I know if there is such a storage point for the evil demon crystal? My inferences just now are all guesses out of thin air. Even if you want to know something, you have to let me see the insect spirit!"

Haiya suddenly smirked in embarrassment, lowered her little head in embarrassment, and realized her mistake.

Seeing Haiya's appearance, Tang Yu's face did not change, but layers of shocks had already emerged in his heart. He had confirmed that his own guess should be fine.
Chapter completed!