At this time, Li Mu came to Haidu City, the city where Su Qing was. A few days ago, Zhao Gan told him that someone named Su Qing was looking for him, but at that time, Chen Siqi and others were in the critical period of Dan formation, so he did not come until today.

Li Mu quickly found Su Qing through his spiritual sense search. When Su Qing saw Li Mu, he quickly saluted: "Mu Xian Emperor!"

"Well, I heard you were looking for me, what's the matter?" Li Mu asked indifferently.

"It's like this. I recently discovered something unusual in Haidu. I am really unable to solve this matter. It concerns the safety of tens of millions of people in Haidu. I have no choice but to boldly ask the Immortal Emperor for help!" Su Qing said a little nervously.

"Tell me in detail!" Li Mu said. Su Qing has now recovered to the out-of-body stage. If he is unable to solve it, this matter must be not simple!

"Here's what happened..."

After Su Qing's narration, Li Mu understood the whole story.

Half a month ago, a series of accidents occurred at a construction site in Haidu. That construction site was the property of the Zeng family, the largest family in Haidu. Zeng Qing, the old man of the Zeng family, found Su Qing and hoped that Su Qing could help solve the problem.

Since Su Qing used his medical skills to make money when he was just reborn, Zeng Qing was one of his early patients and later introduced a lot of business to him, so Su Qing took on this commission.

Su Qing originally thought that with his strength at the out-of-body stage, solving this problem should be easy. But he was dumbfounded when he arrived at the construction site. There was a heart-pounding aura coming from under the soil dug up by the excavator. Although he was shocked at the time, he was once a Daluo Jinxian after all, and he still had some pride in his heart. How could he be scared away by something on a small earth?

So he carefully used his spiritual sense to look deep underground, but found a sarcophagus. Just as he was about to explore it carefully, his soul was suddenly locked by a powerful force. If he had not forced himself to use the magic at that time, he might have been killed.

Later, he asked Zeng Qingxian to suppress the matter and not attract official attention, because he knew that if too many official people went there, they would be dead. Then he found Zhao Gan, hoping to contact Li Mu through Zhao Gan.

"I have a feeling that the thing in the sarcophagus will wake up soon. By then, not only Haidu, but the whole world will fall into a disaster!" Su Qing frowned.

"Take me to see it!" Li Mu said.

The two then came to the construction site, which was already empty and surrounded by iron sheets. Since they were planning to build the world's tallest building, the foundation was dug very deep, which alarmed the thing below.

Coming to the pit where the sarcophagus was, Li Mu stretched out his hand and gently lifted up in the air. The ground began to shake, and soon the sarcophagus broke out of the ground and floated in the air. A low roar came from inside the sarcophagus.

"Break~" Li Mu shouted softly, and the sarcophagus suddenly scattered. A ball of black mist rushed into the sky the moment the sarcophagus was broken, trying to escape.

Li Mu stretched out his hand and grabbed into the air, and a giant palm made of energy firmly grasped the black shadow.

"What is this thing?" Even Su Qing, who had the experience of being a Daluo Golden Immortal, was stunned.

"Shang, the companion creature of the alien race, is also the only means of identifying the alien race. I didn't expect that they actually found a way to separate Shang!" Li Mu said in a low voice with his eyes slightly narrowed.

The only difference between aliens and humans is that from the moment they are born, something called "Sorrow" will be born in their souls. It is like a curse that cannot be escaped from generation to generation. However, Shang is also the fundamental reason why they can become stronger by sucking the essence and blood. The reason why people in this universe want to practice by sucking the essence and blood of others but cannot achieve the same efficiency as the aliens is because there is no Shang in their souls.

However, Shang is not entirely a good thing for the aliens. As the aliens' cultivation increases, Shang will gradually occupy a dominant position in their spirits, and eventually slowly devour their entire souls, becoming a neither fish nor fowl existence. It is also difficult to say whether the alien whose soul has been devoured by Shang is still the same person, after all, Shang has been born since the aliens were born.

"Shang?" Su Qing was puzzled.

"Okay, I'll take this thing away, and just pretend it never happened!" Li Mu said to Su Qing, and he didn't intend to explain.

Su Qing nodded. Since Li Mu didn't say anything, he naturally didn't ask. How could he question the Immortal Emperor's actions?

Li Mu carefully put Shang into an immortal weapon and did not want to touch Shang at all. Shang had the function of corroding people's souls and could coexist with alien races. It was poison to humans. If the human soul was corroded by Shang, there would be no life. Back then, he almost got hurt with his cultivation as an Immortal Emperor.

Judging from the energy emitted by this Shang, the cultivation level of the alien race that was separated from Shang was not very high, probably only at the Tribulation Crossing Stage. However, this happened thousands of years ago. The reason why he kept Shang after separating it was because the souls of Shang and the alien race were born and died together, and no matter which side was destroyed, the other side would die as well.

After dealing with Shang's matter, Li Mu did not stay in Haidu any longer, but went straight back to Kyoto, intending to go to the Lesser Immortal Realm as soon as possible to get to the bottom of the matter.

Shang's host has been stripped of Shang, so he now has no way to identify the alien. And since there is one, there may be a second, a third, or even a group of aliens hiding in the human world. He doesn't know what these aliens are planning, but through Li Mu's original deduction, this alien is now in the small fairy world, but he doesn't know who it is. That person seems to be deliberately shrouded in a layer of fog, and even with his cultivation as an Immortal Emperor, he cannot see through it, just like the mysterious man in Taishan.

This basically proves from the side that the mysterious man is indeed an alien, but the mysterious man is much more powerful.

Li Mu did not bring Su Qing along because Su Qing's current level of cultivation could not be of much help to Li Mu. Instead of going to the Lesser Immortal Realm, it would be better for him to stay on Earth, where he could play a greater role with his level of cultivation in the Out-of-Body Stage. As for experience, he was already a Golden Immortal and had fought hard in the fairy world. Why did he need experience in the lesser fairy world?

After returning to Chen Mansion, Li Mu immediately organized everyone and opened the passage to the two worlds of Kunlun. This time, he did not inform Lin Ruxuan of Tianxuan Sect. After what happened in Haidu, he had to re-examine the small fairy world and would not easily expose his people in the open. He himself did not care, but it would be a tricky matter if his relatives were targeted by those alien races.