Yang Yan gently smiled, patted Buman on the shoulder, and comfortingly said:

"Don't worry, just do as I say. Stand over there, regardless of what happens, try to accept it rather than resist. The rest, leave it to me!"

Yang Yan made this decision not because he wanted to trick these men or for any other reason.

He truly intended to teach Buman something.

Because this was undoubtedly a raw gem worth cultivating, he willingly acted as his guide, offering him a great fortune.

However, if taught in a conventional manner like an ordinary person, it might take years.

Therefore, he could only blaze a new trail, using some unconventional methods to teach him.

Although there might be some side effects, fortunately, Buman was young, and most importantly, he had a resilient heart; as long as he carefully avoided them, there would naturally be no major impact.

"Dr. Yang, but Buman knows nothing about this! He hasn't even been exposed to it before."

"And, he's still young, he might not be able to do as you ask. If you really need help, I can assist you."

Beside them, Catherine said worriedly.

"Don't worry, there will be no problem, I'm absolutely confident."

After Yang Yan spoke, he didn't give Catherine a chance to say more and directly closed his eyes, telling Buman:

"Buman, try to calm down as much as possible, don't think too much. I said, leave the rest to me."

After all, Buman was much more mature than his peers.

He wholeheartedly wanted to repay Yang Yan.

Although he was still somewhat worried, he followed Yang Yan's instructions, collected his thoughts, and tried to quiet himself.

"Alright! I'm ready."

"Let's start then!"

Yang Yan finished speaking, light waves flowed around his fingertips, slowly spawning ten blue threads.

One per finger, they gradually pierced into Buman's body.

"Doctor, what is this thing?"

Feeling something in his body, Buman seemed somewhat nervous.

"Don't be afraid, savor the sensation. Remember not to try resisting."

Yang Yan's voice seemed to echo in his mind.

These threads were of course invisible to ordinary people.

For example, Catherine, who was right nearby, couldn't see anything.

However, the man on the bed, with one foot already stepping into the Hidden World, saw everything clearly before him.

Moments ago, he was unaware of what Yang Yan intended to do, why he had insisted on bringing this ordinary child.

Now, how could he not understand?

This... is it Puppetry?

As the leader among these people, although he had only half-stepped into the Hidden World, his knowledge was much broader than others.

He might not thoroughly understand the real Hidden World, but he happened to know the power Yang Yan was presently using.

Is this doctor really a person from the Hidden World?

But there was a major upheaval in the Hidden World, and everyone unanimously agreed that no Hidden World beings should step into the mundane world again?

What exactly is going on with this man named Yang Yan before him?

How dare he defy the entire world!

Phew!

Exhaling lightly, Yang Yan opened his eyes.

Then, his fingers began to move as well.

As soon as Yang Yan's fingers moved, Buman suddenly began to pick up the silver needle.

"Ah!"

When Buman pierced the silver needle into the leader's body, the leader instantly let out a miserable scream.

The sudden scream directly startled Buman, nearly causing him to drop the needle.

"Don't be afraid, relax your body, nothing will happen."

Yang Yan said calmly from behind him.

The voice seemed to carry a certain magic power, calming Buman's anxious heart.

Catherine watched her son worriedly, her tightly clenched arms trembling slightly.

Though she didn't want to owe Yang Yan anything, as a mother, she even more didn't want Buman to suffer any harm.

As time passed, silver needles were inserted all over the leader's body.

When Buman inserted the final silver needle into the last acupoint, a large bulge suddenly swelled on the man's neck.

"Do you see it, Buman? That thing is the Gu poison. It's this thing that's trying to claim their lives."

"But now, you've trapped it. All that remains is to insert silver needles into his body, and it will die immediately."

Yang Yan walked to Buman's side, pointed at the leader's neck and slowly said.

"Dr. Yang, what is Gu poison?"

Buman hesitantly asked.

After all the explanation, he still didn't know what Gu poison was!

"Gu poison..."

Thinking for a moment, Yang Yan then explained:

"It's something nurtured with a very special method by people from my hometown."

"There are all sorts, animals, insects, plants, and even human types."

"When there's a chance in the future, I'll take you to see them."

Buman was clearly deeply attracted by the strange things Yang Yan listed, nodding heavily with full of expectation:

"Alright! Please definitely take me to see them!"

After all, Buman was a young boy, quite interested in these bizarre things.

However, Catherine beside him was not so pleased.

She hesitated for a moment and finally couldn't help but say:

"Dr. Yang, I know, I owe you a lot. But that's no reason for you to target Buman."

"If you want anything, you can speak directly. Even if it's my body, I can give it to you. But Buman is off-limits!"

At this moment, Catherine watched Yang Yan with a resolute look, saying word by word.

Yang Yan was stunned.

He evidently hadn't anticipated such a strong reaction from Catherine as a mother.

"You overthink this!"

Yang Yan smiled bitterly, immediately explaining:

"I'm not trying to make Buman do anything. I just don't want this ultimate skill of mine to fall into oblivion. I plan to teach him this technique. That's all."

"Teach him?"

Catherine furrowed her brow, looking at Yang Yan suspiciously.

Although she didn't know the function of Yang Yan's technique, she could see it was a very powerful skill.

Yang Yan nodded:

"Rest assured, I truly mean no harm. You can come here while I'm teaching him during this time."

Saying this, he felt a rush of headaches.

When did one of the Four Emperors, the Moonlight Emperor, find it so difficult to impart some knowledge to someone?

"You two guys snooping outside, you may come in. Next up, it's your turn."

Yang Yan glanced coldly at the direction of the door and said.

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