I was just solving crimes, how could I become an immortal?

Chapter 290 The Source of Disaster
Just because there are no clues doesn't mean the case can't be solved.

Eliminate all impossibilities, and the remaining one, no matter how unbelievable it is, is a fact.

This is the method Cao An chose when faced with the vast territory of the Western Region.

"But if it is according to what Mr. said, can this technique really be accomplished?" Mu Bai bit his lips lightly, looking very embarrassed.

Ying Huorong looked puzzled: "You also see the problem?"

"Mr. Jing mentioned it, so I figured it out." Mu Bai hesitated: "It can even be said that I had already made a guess, but I quickly gave up my suspicion."

Since the demon clan lost its demon king, the Western Region has been completely in crisis.

As one of them, Mu Bai naturally tried his best to investigate. It was not until the subsequent situation became serious that he could not save the situation, so he traveled thousands of miles to Shangjiang City.

With Mu Bai's ability, he had considered almost everything he could think of, including the most incredible method.

"What method?"

Once the demon power disappears, the monster becomes a poultry, and the pig demon becomes a pig loin, ready to be slaughtered.

Yesterday, after they eliminated both dietary poisoning and external persecution, the third type, airborne transmission, was the only method.

Because this world respects martial arts, demon power is equivalent to human strength.

Including Mu Bai, perhaps he had this speculation in his mind before, but it only passed by in a flash.

"Demon power?" Cao An's angle of attack surprised everyone.

If there was a way to poison the entire demon clan from the air, wouldn't it be easier if it were a water source instead?
"No, the water source cannot be realized, but the communication method I envisioned can be realized." Cao An spoke, almost giving the case a characterization.

"That's even more impossible!" Ying Huorong rarely thought about it: "The territory of the demon tribe is so large, even poisonous smoke can't spread that far, right?"

If you throw yourself into the water, monsters will definitely notice you. This is a very risky approach.

Moreover, there are many water sources in the western region, and it is impossible to take care of every corner. Poisoning the water sources is difficult to achieve.

The failure of the [Silver Needle Poison Test] announced that the demon clan's unprecedented source of change and disaster was not as simple as ordinary powdered poison.

"I feel like there is no reliable water source yet." Ying Huorong analyzed it and put forward his own opinion.

"Air, using air to spread toxins."

This kind of power derived from natural instinct has become synonymous with danger. This crisis is not much worse than that of the demon tribe.

Why?

"I didn't say it was through the air. The enemy's tactics are spread through demonic power."

There are no more than three ways to use poison: one is to poison food, the other is to apply poison on weapons, and the third is to disperse poison in the air.

"Cao An, are you really sure that there is something wrong with the demon power?" Red Fox also became nervous.

It's not like everyone has seen poisonous smoke. King An liked to use this trick very much back then.

But it's very difficult to cover a manor with that kind of thing. The Western Region is huge, and the monsters' ability to resist poison is extremely terrifying.

"Is it okay if it's in the air?"

Every demon clan will absorb demon power to grow, including herself, who is also absorbing demon power all the time.

Now tell her that the sweet air in the West is poisonous. How can she bear it?

Cao An smiled slightly: "You will be fine, but your people are. As for the reason, we will know when we find the source of the disaster."

"Where is the source of the trouble?"

"This..." Cao An said, quickly walked off the throne and stamped his feet vigorously. Right at Cao An's feet?
"No, sir, what you mean is that the source of the trouble has been buried underground!" Mu Bai was the smartest among the demon clan and instantly understood what Cao An was referring to.

"Quick! Call on all the earth demons to dig three feet into the ground within a ten-mile radius!"

The elimination method does not mean having accurate clues.

What Cao An can do is to push forward in a general direction. From now on, he still has to return to the most primitive method: collecting evidence.

A tedious and huge operation began by lifting up vegetation and digging the ground.

It's a matter of life and death, and all demon clans join it without hesitation.

If ten miles is not enough, then a hundred miles, and if three feet is not enough, then ten feet. With a wave of his hand, Red Fox mobilized thousands of demon clans, and worked all night long to dig holes.

……

In the next three days, the Yao clan became busy and dull.

Thanks also to Cao An for proposing the assembly line operation method.

Let those idle monsters be responsible for digging the soil, and then the earth monsters will control the transportation of the soil. During the process, multi-clawed monsters such as spiders and centipedes will be responsible for selecting.

Whether it was corpse weapons or tree roots and bird eggs, as long as they were not soil, they were all picked out and piled aside.

The massive action even startled Daxing's border guards, who were deeply afraid that these energetic guys would come out to cause trouble again.

Of course, the current demon race has no experience in caring about the human race.

Even though there were a large number of monsters, the project continued for three days and three nights without any interruption, yet there was no pressure at all.

However, difficulties still arise in the final step of screening.

The reason is that there are too many things buried under the demon clan.

In the world of monsters with relatively backward civilization, there is no such thing as garbage classification.

The upper claw dug out a skeleton, and the lower claw dug out a hibernating monster. All the rare treasures, swords, guns and sticks, as long as they were useless to the monsters, were buried in the soil.

Digging them all out in one breath was dizzying just looking at them, let alone selecting suspicious objects from them.

The most suitable person for this job in the entire demon clan is Mu Bai, who fully understands Cao An's intentions.

As a woman, it seems that there are all kinds of burdens pressing on her at the moment. Even as a demon clan, she is exhausted after fighting fiercely all night long, and her eyes are full of bloodshot eyes.

"I have arranged for dozens of attentive monsters to help. How about you take a rest?" Red Fox looked at Mu Bai who was frantically rummaging through the garbage, and he felt a little unbearable.

But Mu Bai was very insistent: "This is the most critical moment. One mistake may lead to missing the source of the disaster. I have to do it myself to feel at ease."

Suspicious objects do not have an accurate appearance, so all the objects in front of you need to be reviewed in your mind to determine their purpose before they can be skipped.

The intelligence of the demon race is generally not high, and Shui Qi's colleagues don't know where they died, and there is no reply at all.

As the person in charge of the overall situation, Cao An must ensure that he is full of energy at all times. The burden of supervising the selection can only be left to Mu Bai.

Fortunately, God will not destroy the demon clan.

In the early morning of the fourth day, when the first ray of sunlight fell into the west and the magpies on the branches sang softly, a cloth bag appeared.

The five-inch length was wrapped in a gray linen cloth. After unfolding it, a finger came into view.

At this moment, Mu Bai's eyes were filled with mist, and an excited smile bloomed on his face.

"Your Majesty, please go and invite Mr. Cao. Mubai has lived up to expectations and found the source of the disaster."

(End of this chapter)