Yang Yan immediately explained:

"The white paper can summon souls because the other party used some unknown means to imprison their souls, so we can't summon them directly through conventional methods."

"Now I use white paper stained with the deceased's blood, and it will move toward the owner's soul. To find their soul, this is the only way."

"This is very dangerous. If you run into the other party directly, you might die. Think it through: to proceed or not."

The dozen or so people present felt a chill at Yang Yan's words.

If the adversary were criminals, these battle-hardened officers would never be afraid.

But now, they didn't even know if the opponent was human, and that made them wary.

The first to take the paper was Xia Bing.

Without a second thought, as soon as Yang Yan finished speaking, she tore off a piece herself and rubbed it on the bloodstain on the ground.

"Is this all it takes? Anything else to note? Why did you ask us to undress earlier? Can we wear uniforms when searching?"

Xia Bing asked intensely.

Yang Yan glanced at her and gently shook his head, saying:

"No more. When staining the paper with blood, you cannot wear clothes, otherwise, under the suppression of police and national emblems, this white paper becomes useless."

"Now that it's stained with blood, there's no issue. But I suggest wearing uniforms when searching. If the opponent isn't human, it'll be more difficult for them to deal with you."

"Got it. Turns out police officers truly need to embody righteousness."

Xia Bing finished speaking and went out with the blood-stained paper in her hand.

Her clothes remained there.

Of course, she didn't ask her team members to take these things.

After all, this involved risking their lives, and it had to be voluntary.

"Oh well! If I must die, so be it! Wearing this uniform means seeking justice for the dead and bringing the killer to justice!"

Liu Jun gritted his teeth and went out with the blood-stained paper in hand.

The others looked at each other, gritted their teeth, tore off a piece of paper from Yang Yan in turn, and went out after smearing it with blood.

Yang Yan watched this scene, a meaningful smile appearing at the corner of his mouth.

These officers, knowing they might die, still went without hesitation.

With this, Yang Yan felt more confident about the upcoming plan.

After the last officer took the paper of the "Mourning Stick" out, Yang Yan also went outside.

"Is there any of this left? Should we give more to others?"

Xia Bing asked.

"There is, but as soon as the door opened, this thing became useless."

Yang Yan lightly shook his head.

"I see! So, only a few of us can use this? Not sure if that's lucky or unfortunate!"

Liu Jun glanced at the thing in his hand and said with a bitter smile.

"You'd better search in pairs. If it approaches a target, it will stand up. At that moment, be cautious and call me directly. Don't get near the target; leave the rest to me."

After Yang Yan finished speaking, he gave these officers his phone number.

"Understood? If near a target, don't approach it; call him immediately. Remember, you all have families waiting for you at home; safety first."

Xia Bing scanned everyone with her eyes and said solemnly.

They glanced at each other, saying nothing but understanding in their hearts.

This case exceeded their capabilities, and even if they stepped in, it would be in vain, so they would notify an expert like Yang Yan right away.

They didn't know what Moonlight represented, but commanded even Black and White Impermanence, and the way they acted towards him wasn't simple.

Upon leaving the crime scene, the outside officers and coroner looked puzzled at those not wearing outer clothes.

Fortunately, Xia Bing, who had gone out first, had already dressed by then.

"How did it go? Why were you told to undress?"

The coroner outside the door lowered his voice and asked Liu Jun.

"Don't ask, it's better unsaid, and must be strictly confidential."

Liu Jun smiled wryly, then said very seriously.

"All right, once handled here, pack up; no need for anyone to stay."

After speaking, Xia Bing left first.

Before leaving, she signaled to Yang Yan.

Yang Yan followed Xia Bing to the Prosperous Court parking lot. Once in the car, Xia Bing spoke:

"Is Frost Heaven cousin like you?"

"What kind of person?"

Yang Yan chuckled.

"Don't play dumb! You know what I'm talking about. I just want to know if his disappearance these past few years is due to these things?"

By the end, Xia Bing was looking at Yang Yan with a pleading expression.

"Alright, you'll have a chance to ask him in person if you meet him. I can't really speak on his behalf. Moreover, isn't our current matter more important?"

"If the killer isn't caught, there'll surely be another victim. So, we must go all out; I don't want to head to a fifth crime scene."

Yang Yan changed the subject.

Xia Bing saw Yang Yan's expression and knew he wouldn't tell her.

"Where are you heading now? Want me to drop you off?"

Xia Bing asked.

"I'm not going anywhere. I have a place nearby, and I'll be monitoring the other party, so I can't leave."

Yang Yan rubbed his temples and said.

"Do you have a way to stop them from committing further crimes?"

Xia Bing looked at Yang Yan expectantly.

"How could that be possible?" Yang Yan shook his head with a bitter smile, "But I can find them when they strike, allowing me to get there in time. But if they don't act, it's up to you to find them."

"In any case, be extra careful and don't take risks. If the opponent truly isn't human, your guns won't help. You understand what I mean. Sometimes, a bit more fear is good."

"I understand, I'll be cautious. But, this is indeed too bizarre. If I hadn't seen it myself, I'd never believe it."

Xia Bing said with a wry smile.

Never before had she felt so powerless; whether faced with a murderous criminal or a cunning con artist, Xia Bing always found a way to deal with them.

But this time, she truly felt helpless.

As Xia Bing left, Yang Yan returned to the mansion in Prosperous Court.

Recently, the Hidden World was growing increasingly unstable, and those beings were becoming more active in the modern world.

Huaxia was relatively calm, but in England, vampires were already openly drinking blood.

In neighboring Myanmar and the Yue Kingdom, a lot of bizarre incidents were happening too.

Yang Yan sat in the garden, gazing at the sky, his thoughts tangled and chaotic.

He originally intended to return to Huaxia for a break, but it turned out this way again.

"It seems, maybe it's time to consider those guys' proposal."

Yang Yan couldn't help but mutter.

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