In half an hour.

In the classroom.

"Dear teacher, I want to learn magic."

"Nonsense, this is science. Believe in science! Respect knowledge!"

Deng seriously corrected Yilin's statement.

"In fact, similar to the defensive array circuit of isita port, the design of the whole city was written by the University of engineering. But in order to stabilize the" divine power ", the Holy See hid all this and claimed it as" divine grace "

After Yilin personally tried to construct a super large composite circuit and figured out the secret structure in isita port, he had already come to this conclusion.

“……”

Deng heard the speech and was silent in an instant.

A moment later, Deng Zhengshen coughed twice: "it doesn't matter."

"Ha ha."

"But, my dear student, oh, you guessed well."

Deng smiled. He drew a simple "secondary heating circuit" with a flask filled with clean water on it.

"Use 'nodes' and' patterns' to exert the power of crystal in various ways. This is the 'circuit'."

"But if you really want to perfectly connect the 'circuit' and the 'circuit' and act on more carriers, you can't do it with a simple circuit."

Deng took out a crooked old wooden stick as he spoke.

The top of the wooden staff is inlaid with a crystal the size of a goose egg. It is crystal clear, dense and hidden.

He gently took the crystal at the end of the wooden stick and put it in the palm of his hand.

Peng!

In the twinkling of an eye, a small flame suddenly lit up in Deng's palm, turning Deng's wrinkled face red.

"What really connects complex 'circuits' together and works is the' technique '."

With a wave of Deng's wooden staff, the flame disappeared out of thin air.

"The ultimate of crystallography is' crystallography '."

"Crystallography?"

Yilin subconsciously pulled the dead skin on his forehead and felt very good, which made Yilin fall into meditation.

"We are scholars who explore the mysteries of the world."

"We are engineers who are obsessed with creation."

"We are also crystal warlocks who use the power of crystal to the extreme."

Deng's voice came strangely from behind Yilin.

Hearing the direction of the voice, Yilin frowned and was surprised. He turned his head and looked behind him.

I don't know when another "ah Deng" appeared behind him.

Look back to the podium.

"A Deng" on the platform was laughing with a joking expression and deep meaning in his eyes. After finishing his forced lines, he stared at Yi Lin and said nothing.

"Separation?"

Yilin whispered. He closed his eyes and spread the "perception".

After closing his eyes and entering that mysterious and unspeakable state, Yilin found that the "a Deng" on the podium seemed to exist without breathing and heartbeat. On the contrary, it was a Deng who appeared behind him, which was the real existence.

Seeing that Yilin was really shocked, ah Deng couldn't hide his pride in his expression, waved and scattered the "ah Deng" on the podium.

"This is' projection ', a trivial skill."

“……”

Deng stepped forward again from behind Yilin.

At this time, the clear water in the flask placed on the "secondary heating circuit" on the desktop bubbles and begins to boil.

Deng casually put a wooden stick outside the boiling flask.

Crystal light flashed.

The water that is about to boil stands still in an instant.

"Click click -"

The flask cracked and white mist gushed out of it.

"Ice?"

Yilin pulled the dead skin harder.

"This is' ice knot technique ', which is not worth mentioning."

Deng made another effort.

The water in the flask flowed again.

Stick a little more.

The crack on the surface of the flask was repaired as before.

"This is' repair ', general."

“……”

Deng used the flask to show many of the "tricks" he said.

Yilin's heart itched.

You show back to show, but you teach!

As Irene guessed, what Aden taught Irene before was only the foundation of the foundation. This "technique" that ignores the most basic rules of the circuit and the starting time of the circuit is the high-end play in "crystallography".

After Deng showed Yilin's face, he sighed.

"Unexpectedly, the crisis of crystal depletion in the mine was caused by legendary demons."

"If you don't teach you the real 'skill', even if you are the 'brave' in the prophecy, you should not be able to solve the demon."

"This task is still too difficult for you."

Yilin's expression was helpless: "is this magic?"

"Nonsense, believe in science!"

Deng had just finished, his expression changed slightly, and then quickly drew a circle in front of him with a wooden stick.

Where the end of the wooden staff passed, the light flowed, and a light door appeared in front of Deng.

Behind the light door, it seems that the space is separated, which is another completely different scene.

"Well, wait a minute. I'll be right back."

finally.

Deng once again stressed: "remember, believe in science."

With that, Deng stepped across the light door and disappeared in front of Yilin.

Elaine, stunned.

Did you tell me this was "science"?

wait.

The old man didn't use the legendary "transmission" just now, did he?

Isn't the dean's wife too defenseless?

Dean... Danger!

……

……

Deng left and hurried back.

The expression is dignified.

Yilin had no plan to follow, and thought alone in the small classroom.

After Deng came back, he didn't mention the reason why he left for a short time.

He carefully explained the principle of "technique" to Yilin.

"Before the operation is launched, there must be a carrier."

Deng pointed to his wooden stick and said with a smile, "every big engineer's tools are carved by himself. Circuits with different functions are connected in various ways. Finally, the result is' technique '."

"That is to say, your staff... Ah, bah, the engineer's staff is actually fragments of various' circuits'. When you want to use it, pick useful fragments and combine them to form a technique?"

"Almost." Deng was amazed at Yi Lin's understanding. He stayed for a while and continued: "another usage is that the 'circuit segment' in the engineer's staff acts as an 'internal type'. It has a different effect when combined with the inherent 'external type'. It's like this..."

Deng used the "secondary heating circuit" on the desktop as an example.

He knocked in the secondary heating circuit with a wooden stick. The "circuit segment" in the wooden stick and the secondary heating circuit formed a closed "circle" and crystal energy flow. In the twinkling of an eye, the water in the flask evaporated rapidly at a speed visible to the naked eye, and there was no last drop left.

"In fact, it doesn't matter if you don't understand now. After all, it's not a moment and a half..."

"I probably understand."

Before Deng finished, Yilin nodded and suddenly realized.

“???”

……

……

"I have another question."

"Oh? Will you have any questions?"

Deng's eyes widened, indicating that it was incredible.

"I just feel curious..." Yilin looked at his hands and said thoughtfully, "can you engrave the circuit on the surface of the body and use the 'human body' as the carrier of the 'circuit' to trigger various' techniques'?"

what the fuck?

Deng's eyes widened, and he seemed to be amazed at Yilin's wishful thinking.

Yilin didn't pay attention to Deng's surprise at all. Bold ideas came out of his mind, constantly trying to figure out the feasibility of this idea and talking to himself.

"In theory, I think it should be feasible. Just solve the nodes, circuits and cores, you can build various functional techniques. For example, build 'defense', 'acceleration', 'mobility', 'weakness detection' in the human body..."

"The only thing that needs to be solved is the problem of energy source."

"Stop!"

Deng gave a loud drink and interrupted Yilin's reverie.

Yilin was stunned. He raised his head and looked at Deng with a serious expression.

The two masters and disciples stared with big eyes and small eyes. No one spoke, so they stared.

long time.

Deng waved out a "portal" and took Yilin to a strange place.

This is a room.

There are beds, bookshelves, tables and chairs.

There is a flat book on the table.

Next to the book, there is a simple wooden photo frame.

There is a smiling face of a middle-aged man in the picture frame.

Yilin doesn't understand why Deng brought him here.

The room was dusty with furnishings.

Deng's wrinkled face showed a rare look of sadness.

At this time, Yilin was vaguely aware of the purpose of Deng bringing him to the room.

"He was my last student, zikizaszki."

"Dead?"

"Uh... How do you know?"

"Obviously."

All the photos were taken in black and white. Deng had to engrave the word "mourning" on his face. It was really difficult for Yilin to guess. After all, IQ is there.

"Once, he was like you. He put forward the assumption that the 'human body' would exert its power as the carrier of the technique. Even, he wrote a book and wrote all his research theories in that book."

"What book?"

"A real engineer should play melee in meat clothes."

“……?”

"What's the problem?"

"... No. you go on."

Deng was completely unaware of what was wrong with the name of the book. His face still looked nostalgic. When he remembered the past, Deng's eyes were full of sadness.

"He finally did the same. On himself, he successfully constructed the technique, and the technique worked."

"And then? How did you die?"

Deng was silent for a moment and turned his face.

"It blew up."

“?”

"Oh, how can human power bear the power of crystal? Crystal is the embodiment of the power of the God Uranus. That's divine power! How dare mortals touch the power of God."

Erin frowned.

Suddenly.

Yilin remembered something.

"What was the name of the student you just said?"

"Zizizaszki."

"Blow yourself up?"

"Zizizaszki!"

"All right."

Yilin instantly accepted the setting.

Die unjustly.

……

……

Ten days later.

Deng patted Yilin on the shoulder and was pleased with Yilin's learning speed.

"My dear student, you can graduate!"

"Ding!"

[you successfully completed the course of 'advanced crystallography' and were recognized by the great engineer 'albus Percival woolfrick Brian Dumbledore'.]

[Deputy Engineer, promoted to "senior engineer".]

[the reputation of the University of engineers has been upgraded to "respect"!]

After Deng personally upgraded Yilin's title, he said in a deep and profound way: "now, after integrating the knowledge I taught you, you have enough strength to complete your mission and solve the task of 'crystal mine depletion'. However, you must not force it. It is one of the six demons personally created by the 'evil god' in the legend."

"Oh, I'm done."

Deng closed his eyes and sighed: "if you encounter any danger, you must not force it. You can fully experience it and wait until it becomes stronger..."

"I said, I'm done."

Seeing that Deng didn't respond, Yilin was helpless and took out a prop.

what the fuck?

Deng opened his eyes and looked at the "props" in Yilin's hand. Suddenly, it was messy in the wind.

Ah, this?

When was it finished?

Why don't I know?

"Ding!"

[congratulations on completing the important branch task: the request of the big engineers!]

【EXP+200000。】

“……”

[deed of six evils]

[rarity] SS

[effect] proof of killing "six evil generals".

[note] it seems to have no other effect.

“……”

In Yilin's hand, there was a black spike.

It's not like a dagger.

Some are like a sharp corner.

The whole body is dark, and the surface is covered with blood red texture, faintly showing evil.

This is a prop obtained from the corpse after Yilin killed [six evil generals · source devouring insect nest].

It doesn't seem to work.

But when he took it out, it was enough to prove that he killed the six evil generals with his own hands.

After Yilin showed the "agreement of six evils" in front of Deng, the hint of task completion came late.

Deng was completely stunned.

I don't know how long it took. Deng's dull brain finally turned around again. He smacked his mouth, moistened his dry lips, stared and looked surprised.

"You, you, you... Didn't you say you escaped?"

Yilin seriously recalled the chaotic scene at that time.

One of the five big engineers didn't give Yilin a chance to explain.

"Where, you said it yourself."

"Why don't you tell us you've solved the crystal depletion crisis?"

"You didn't give me a chance."

“……”

Yilin patted Deng on the shoulder and comforted: "it doesn't matter. Isn't everyone happy?"

All, all your sister!

You said it was solved. I won't teach you, okay!

This is the real secret!

……

After solving this important branch task, Yilin was completely idle.

Because there were many hostile forces from the holy see in the College of engineers, Yilin didn't wander around and lived in the college at ease.

In his spare time, Yilin sent a message to Wang Tiandi to let him move freely and wave in the wild for a period of time, so as not to be discovered by the rival NPC of the Holy See.

Although Wang Tiandi was speechless about this inexplicable development, he knew that the situation was not quite right. He could only silently be a wild dog wandering around the world and go to the wild to practice level alone.

Wang Tiandi's blood bar is very thick and his level is not low. It should not be dangerous to brush wild monsters alone.

Plus it's a real dog, and Yilin has nothing to worry about.

After knowing the composition of "Shu Shi", Yilin spent more time in the library.

If that sentence is true, vision determines experience.

After Yi Lin's understanding of "crystal grain technique" was further deepened, the same book read different flavors in Yi Lin's eyes.

From time to time, Yilin thought of the warrior who "blew himself up" that made ah Deng sigh.

"The human body really can't bear the power of 'crystal grain art'?"

"But if 'people' can't, what about 'players'?"

"The 'player' is no longer a person, okay?"

In order to avoid a Deng's misunderstanding, Yilin did not build a dangerous "technique" at will in the college.

Every real engineer, who can be called a graduated engineer, must personally make a unique "engineer's staff".

Every engineer's "staff" cannot be used by anyone except himself.

Because of the above structure and lines, only the builder himself is most familiar with them.

If others use it indiscriminately, it will explode in minutes.

Yilin didn't have the material to make the "engineer's staff" for the time being, so he could only put the matter aside for the time being and talk about it in the future.

Then——

Sunrise.

Sunset.

having dinner

sleep

read a book.

Meditation.

Yilin's days are boring and full.

Gradually, Yilin didn't know when to start. He became no longer entangled in "players" and "tasks", immersed in the world of science and couldn't extricate himself.

……

……

A month later.

Big engineer tower.

48th floor.

Yilin special dormitory.

"Oh, no, not there..."

"Oh, damn it, master, it itches..."

"Oh, it hurts!"

"How can you treat a lonely gentleman like this! Oh ~ ~"

Nie Hongxiu and Bai Xiaoyi, two mother spirits, float curiously behind Yi Lin and turn in circles.

It feels... So cruel!

These days, master feels strange.

He summoned the strange car and carved strange patterns on it with a knife.

Even so, the sound of the car also made Nie Hongxiu and Bai Xiaoyi, two pure mother spirits like little white flowers, blush and dry ears. I don't know what they associate with.

In fact, they don't associate anything, but the tone of nightmares always makes them feel something wrong.

But what's wrong, the two mother spirits couldn't say for a moment and a half.

Yilin held a small blood red carving knife and focused on carving lines on the armor plate of nightmares.

People can't bear it... Should the car be all right?

Yilin thought happily.

The strange cry of nightmares sounded in his ears, and Yilin was calm in his heart.

With the more in-depth understanding of "crystal grain technique", Yilin draws lines more easily.

It has to be said that the armor plate of nightmares is very hard, and ordinary tools can't engrave it.

I have to let Yilin take out a good guy and carve his head in sweat.

Right now.

Yilin cut a knife suddenly in his hand.

He frowned slightly, waved and put away nightmares, Nie Hongxiu and Bai Xiaoyi.

Eh?

Why are the faces of the two mother spirits so red?

When putting away the two mother spirits, Yilin noticed that the faces of the two mother spirits were wrong.

But Yilin didn't think much.

"Knock, knock, knock."

Shortly after Yilin put away the car and the mother spirit, a short knock came outside the door.

Irene knew who it was.

But when he opened the door, he pretended not to know and said in surprise, "mentor, why are you here?"

Deng wore a pointed hat. As soon as the door opened a gap, he forced his head in, squeezed his eyebrows into a chrysanthemum shape, and looked around the room.

Yilin's dormitory, the room is clean and tidy, there is no one else.

"It's strange. I heard a strange sound."

Deng whispered.

"What are you talking about?"

"No, maybe I heard wrong."

"Oh, it doesn't matter. You're old, too. I don't blame you."

“……”

The furnishings in the room are very simple.

Not even a second stool.

Deng didn't care. He took out the wooden stick and put it in the empty place. Out of thin air, he turned into a master rocking stool, narrowed his eyes and sat on it, and then gently shook his ass.

When Yilin saw that Deng put "magic" in front of him under the banner of "science", the corners of his mouth twitched slightly and asked, "don't tell me that you came here to show magic in front of me?"

"How many times have you said it? It's science."

Deng narrowed his eyes and said a word, then he became silent.

Yilin was silent.

The room fell into an awkward atmosphere.

It's really embarrassing to be alone in a room and have nothing to say.

In five minutes.

Yilin suddenly smiled, narrowed his eyes and said, "if you have something to say, say it directly."

Deng opened his eyes and smiled.

In this seemingly obscene smile, Yilin read out other meanings.

"I said you've been eating and drinking here for so long. Should you go?"

Yilin couldn't help laughing and scolding: "so you've been struggling for a long time, just thinking about how to open your mouth and drive me away? Have you ignored the broken things between you and the president's wife?"

"Nonsense! Lady Catherine and I are pure friendship!"

Deng was angry.

"Then tell the Dean it doesn't matter?"

"Well, I'd better say goodbye..."

Deng's arrogant arrogance immediately counseled.

"But then again," Yilin said with a smile, "even if you don't hurry, I've learned almost here. It's time to leave."

"Really?"

Deng's muddy eyes brightened and his eyebrows brightened.

Should it be so obvious

Yilin took another puff at the corner of his mouth.

"But before you leave, you have to leave something to commemorate?"

"Ah?"

"For example, a 'big engineer title' or something."

“……”

"Ding!"

Erin's ear tingled.

Deng held an engineer's staff and made a little space on Yilin's head.

[your shamelessness has been recognized by the current 'great engineer · albus Percival woolfrick Brian Dumbledore'.]

“?”

[Deputy Engineer, promoted to "honorary guest engineer".]

[the reputation of the University of engineers has been raised to "worship"!]

“……”

Honorary guest Engineer?

Means... Nominal?

The one who doesn't have to be responsible?

"Ding!"

Just as Irene expressed her surprise for Deng's generosity, there was another Ding in her ear.

Congratulations! You have promoted your deputy "engineer" to the top

For the time being?

Sort of?

Yilin's expression was slightly stunned. He always felt that there was something wrong with this hint.

But it doesn't matter.

[successfully transferred to hidden profession "crystal warlock"!]

An ordinary hidden occupation.

But it's not over.

[it is detected that the player has two classes, which triggers the condition of class fusion.]

[professional "Assassin" and professional "crystal warlock" can be integrated into special professional "shadow warlock". Are they integrated?]

【YESNO?】

Yilin took a deep breath.

“YES。”

After a while.

"Have you had enough? My dear student, what are you staring at?"

Deng saw that Yilin's expression was dull and angry.

Yilin recovered from the surprise and was excited.

But he still tried not to laugh so exaggerated, and nodded hurriedly, "enough."

"Then get out." Deng smiled.

"... so urgent? When?"

"Tonight at the latest."

"Don't you hold a grand farewell ceremony or something?"

"Hehe, we'll see you off in person."

“……”

Before Deng left.

Yilin remembered one thing.

"By the way, my respected tutor, I asked a question casually. Where do we usually store the crystals in our college?"

Deng looked at Yilin strangely: "what are you doing to ask this question?"

"Nothing, I'm just worried. If such precious crystals are placed in the wrong place and are missed by bad people, how dangerous it is! As a senior... Er, no, honorary guest engineer, it's normal for me to care about my own property safety?"

When Yilin said this, he was afraid that Deng wouldn't believe it, so he quickly switched the title [kind assassin], and his face also showed a kind smile.

……

……

At night.

Elaine finished packing.

Before approaching the appointed time, Deng stood in front of Yilin's house half an hour in advance, nervous.

He was afraid that Yilin suddenly changed his mind and said he wouldn't go if he didn't go.

Fortunately, Yilin didn't break his promise.

Deng breathed a sigh of relief.

"Where do you want to go?"

"Well... Let me see, the giant beast of fire, poros, OK?"

"No problem!"

Deng promised.

Yilin followed Deng to take the "elevator" and came all the way to the top floor.

Wang Tiandi shook his tail and followed Yilin.

Before leaving, Yilin almost left the dog in the wild. Fortunately, Yilin still had a conscience and called the dog back in time.

What Yilin didn't expect was that when he reached the top floor, Deng shook with the wooden stick. The elevator rattled again and went up another floor.

When she came out of the elevator, Yilin found herself standing on the top of the big engineer tower. Overhead, there is a pure moon and a cloudless night.

The breeze came slowly, bringing a trace of coolness.

In addition to Deng, the other four major engineers have already been waiting at the top of the tower. Seeing that Yilin came here, a complex expression appeared on their faces at the same time.

"Come on!"

Deng urged.

At the top of the tower, there is a huge range of techniques. On each node, crystals are stably embedded.

"Teleportation?"

Yilin was surprised. He soon recognized the function of this large operation.

Yilin went to the center of the transmission array, and Deng stood in his own position.

Five great engineers are standing at the five corners of the pentagram.

Crystal light, soft light.

A pillar of light rose into the sky and tore the night sky.

Yilin bathed in crystal light, overlooking the great Institute of engineers.

The bright neon lights, like a seven color crown, are shining.

Even Yilin didn't find it. In this college career, he regarded it as a place to return in the game world.

"Hoo..."

Yilin suddenly breathed a sigh of relief and looked at the five elders with a smile.

"Goodbye, may."

"Goodbye, assie."

"Goodbye, Forrest Gump."

"Goodbye, ARU."

The big engineers Merlin, Severus, Rupert, Gandalf, and the four old men had big question marks on their heads at the same time: "??"

finally.

Yilin looked at Deng in front of him, smiled, took off the high pointed Wizard Hat, put it on his chest, bowed slowly, and performed a standard engineer etiquette.

"Goodbye, my mentor, Albus Percival woolfrick Brian Dumbledore."

Deng bowed his head and said nothing.

Yilin closed his eyes and was still torn by the light of crystal.

A moment later, as the crystal light dissipated, the figure of one man and one dog dissipated at the top of the big engineer tower.

Until Yilin and Wang Tiandi completely disappeared in the light of the technique, Deng bowed his head and muttered to himself.

"Goodbye, my student. Oh, don't come back."

No one found that when he bowed his head, Deng squeezed his eyes and squeezed the moisture out of the corners of his eyes, just as the wind was too noisy to paste the old man's eyes.

At the top of the great engineer's tower, the five old men were silent again.

For a long time.

Gandalf, President of the University of engineers, slowly pulled out a simple long sword from his robe. The body of the sword was engraved with dense lines.

This is his "engineer's staff"... A sword.

Gandalf laughed, "it's time to welcome our distinguished guests."

"Welcome that young Pope, his Excellency Diego ogi Anthony."

"The boy seems to have stolen our crystal library before he left."

"That damn little bastard."

"Yes, damn little bastard."

“……”