The evil ghost that started to scare people was a maid who died of illness. She was very young and had a favorite servant. Although she was unwilling to accept the death, her hatred was not that great.

If I had to say it, the time of death was exactly late at night.

Just as Dingxiang said, the probability of evil ghosts being born has been increasing.

However, Shen Yi's expression did not change.

Even if every person who dies turns into a ghost, judging from the current situation, it is not a problem so serious that it cannot be solved.

After all, newly born ghosts are very fragile. As long as they are discovered in time, an ordinary ghost rider can easily get rid of them.

Even in a general modern society with a global population of billions, the daily death toll is less than 200,000. Assuming one person "exorcises the souls" of five people a day, 40,000 to 50,000 ghost riders can solve all the problems. If there are more than 100,000 or 200,000 ghost riders, then as long as humans do not commit suicide and start a war, the end of the world will basically not happen.

Not to mention, the population in ancient times was far smaller than that of modern society. With the improvement of productivity and medical level, the number of deaths will be greatly reduced.

If it were possible to see the future and determine the evolution trend of evil ghosts, Shen Yi felt that he could wait until the development of the three major civilizations became regular, prepare 100,000 scrolls of ghost-controlling techniques, and leave an artificial intelligence to supervise, and then he could leave.

Just as Shen Yi was thinking.

Suddenly, his eyes narrowed slightly.

Something is happening! It's not the female ghost that Cui Ren went to deal with, but another new ghost born in Yizhou City.

He was a scholar.

A poor scholar named Lu Yan.

The family could barely be considered a wealthy peasant, but they were greedy and wanted to cultivate a scholar. In order to support his studies, they even sold the land accumulated by three generations of their ancestors. However, although he worked hard, he was not a good student, and after paying such a huge price, he was unable to become a talent.

This time, he even sold the last bit of land in his family and failed to be admitted to Xianci Academy. After returning, he fell ill and eventually died.

It can be said that it is the most resentful one among the seven new ghosts born that day.

But——! In Shen Yi's sight, when the ghost was about to intimidate others and absorb blood, suddenly, wisps of black mist emerged from the ground.

The black mist directly turned into chains, tied up the evil ghost, and then pulled it into the ground, disappearing in an instant.

The whole process did not alarm anyone.

If Shen Yi hadn't been watching it all the time, it would have been difficult to notice.

"There is indeed a problem." Shen Yi frowned slightly, and the magic halo in his eyes became stronger. He wanted to take a deeper look, but the thickness of the earth blocked his sight.

Ghosts are invisible and intangible, they can appear as if there is nothing on the land, and they disappear in a flash.

Soon all traces were lost.

"Captain, have you found anything?" Ding Xiang kept looking at Shen Yi.

"That's right." Shen Yi nodded solemnly and told Ding Xiang what he saw.

"Underground, it turns out to be underground." Ding Xiang had not expected this to happen, but she also had some sudden realization, "Underground is indeed a blind spot in our vision. The firefly detector has difficulty detecting the underground situation."

"I can't see too deeply, but one thing is certain." Shen Yi paused and emphasized, "The black fog that took the scholar away just now was the power of a ghost."

"In other words, there are ghosts hiding underground, and they are secretly bringing some new ghosts into the underground?" Dingxiang quickly deduced the general situation.

"I'm afraid that's the case. From the beginning to the end, the ghost did not appear. Instead, it directly used the Yin energy to transform into chains, dragged the ghost down, and immediately fled away. To be able to do this, his wisdom and strength are not low." Shen Yi's frown had relaxed.

I am not afraid of difficult problems, I am afraid that I can't even find where the problem is.

It was obvious that what this ghost did was to hide itself and strengthen itself from his sight. If Dingxiang had not realized the problem with the data, it was unknown how long this underground ghost would have been hidden.

"Captain, what should we do next?" Ding Xiang looked at Shen Yi, still pursing her lips.

This was her gesture of shame.

After all, although Shen Yi discovered the reason why the number of evil spirits decreased, she couldn't help at all.

Ghosts can move freely underground, but she can't.

"No rush, let me think about it." Shen Yi said.

He really needs to think carefully about this matter.

And at this moment.

The evil scholar ghost tied up with chains was dragged down for thousands of meters, and even continued to go down, until it reached a depth of ten thousand meters, then eleven thousand meters, and thirteen thousand meters. These were depths that modern civilization could not reach at all.

Finally, it stopped at 18,000 meters.

If you go another 17,000 meters down, you will reach the magma layer. Even here, the temperature has exceeded 300 degrees Celsius. No animal or plant can survive at such a temperature.

But at this moment.

This place should have been a forbidden zone for life, but it was shrouded in a large mass of black fog.

The chain holding the scholar's evil spirit sank directly into the black fog and turned into a big man in armor.

And here, the black fog turned into the base, column frames, walls and roof.

Although there was no color at all, it was all pitch black, but it was a palace! It had clear edges and corners, and the pillars were carved with crouching dragon patterns. On the left and right sides, there stood evil ghosts surrounded by black mist, and they were obviously quite powerful. Looking again, there were more than a dozen ghosts that had not yet taken shape floating in front of the palace.

The armored ghost general threw the scholar in his hand forward and half-knelt down respectfully.

"Your Majesty, this is the last one tonight."

"Okay, thank you for your hard work, General Luo." A man on the stage was wearing an ink-black dragon robe, with a black mist surrounding his face, making it impossible to see his features. Although his tone was calm, it was chilling. If a living person heard it, they would probably tremble all over.

And this man stretched out his hand.

But just a gentle grab.

The surrounding palaces turned into a large amount of black mist and surged in, completely sinking into the bodies of a dozen or so ghosts that had just formed below the stage.

In an instant, the aura of these dozen new ghosts continued to roll, and they kept howling. The sounds of ghosts crying and wolves howling resounded throughout the 18,000 meters underground, but the ghosts on the stage and the ghosts around them showed no reaction.

It seemed like he was used to this scene.

The howling actually lasted for half an hour.

Then he slowly stopped.

Those people who were just a few new ghosts not long ago now all have real forms, revealing the appearance of scholars, old men, maids, and even children.

But there was madness in their eyes.

It's the end of the month, please vote for me () 　　 　 (End of this chapter)