The solution city is built on the ground layer of stacks, it is not the open ground, not the water's edge, not the plain, it is more like a house to interpret a complete city.

Among them, the interconnected pipes stretch out into the depths that no one knows.

The collapse of the floor, raising smoke and dust. The light of the white space shines from the top to the bottom, like a pillar of light falling from the sky.

Shadows of fire flying wildly out of nowhere, a dozen destroyed partition walls, and a flood that gradually overflowed the ruins.

Everything is a sign of something terrible happening,

The sleeping, or only a small piece of gear, was moving. Gu Chuan saw a geared man with only his head, shoulders and one hand left, relying on his only hand to climb out of the collapsed ruins, and saw the pillar that fell from the sky, its eyes flashed:

"Mentor ...... Equal"

Gu Chuan also looked at the pillar.

At first glance, its material looks like some kind of marble, but if you look closely, you will find that it is closer to a certain kind of glass, and the flickering light points on it, as if to form some patterns, can never be formed, just like a damaged mobile phone screen, in which a liquid crystal liquid seeps out, and soon infiltrates the inner side surrounded by the outer layer, like a bottomless deep sea-colored fissure.

But around this permeate, you can see sporadic revealing words, writing the original person. Because this is a cylinder, which is connected from front to back, and is circular, it is impossible to determine whether the words are at the beginning or the end.

"It's one of the mentors?"

Gu Chuan asked the half-body gear man.

As he spoke, he felt his chest feel a little tight. While he was stuffy, his abdomen was heating again.

"Yes......" the halfling stammered, as if awakened from a nightmare, "that's the mentor who sentenced me to hallucinatory psychosis. It is responsible for reconciling the conflicts between people and cognitions that arise in the city in search of answers. ”

Chu Yun's face remained unchanged, and he flicked his fingers and flew a few flying gravels and walked forward. It was only after a few steps that all the organs in the body felt an unusually strange pressure.

There was no gear on top of the man, and what was known as the cavity vibrating mold was hidden in the rubble, and Hatsumo couldn't see it, but she also understood that there was something destructive about her unclear:

"We have to get out of here. The state of this area is not quite right, and there may be some special force at work. ”

She turned her head and said to Gu Chuan.

"Yes......"

Gu Chuan also sensed the existence of this invisible impact, he didn't have time to do some kind of decryption game here, he had an easier choice - leave here.

In the huge square, most of the dozen or so partition walls collapsed. By the light of the fire, you can see that the Twelfth Chamber is obscured by stone, and the adjacent secret chamber leading to the Tenth Question Area has been completely shattered by a large metal bar. The closest to them was the porterge with the coat of arms of the fourteenth question.

The two of them were ready to run away.

The halfling, who was still lying on the ground and crawling out, spun faster.

It roared hoarsely:

"Wait a minute! Take me! ”

The psychosis of this cogwheel man is extremely timid and afraid of death. It refuses all outings and does not want to follow the rest of the psychopathic cogwheel people, and is judged to be incapable of working and has mental problems that are difficult to solve.

It didn't expect the destructive power to ripple here.

Gu Chuan glanced back at it and saw that it was crawling in the direction of the two of them. He sighed, thrust against his chest in excruciating thump, stepped on sharp pieces of metal and stone, ran back, grabbed the cogwheel man's hand, carried it on his back, and turned back.

Hatsuyun was silently waiting for him. She felt that this was an act of redundancy.

Gu Chuan asked the halfling as he ran:

"What is the fourteenth question?"

"I know, I know ......," said the halfling, frightened to the extreme, "the fourteenth problem is a matter of imagination." ”

"Imagination problem?"

The description of the problem is...... Yes...... "Its mental disorder makes it unable to process the information in its own mind with ease, in other words, it is in a state of extreme tension similar to that of ordinary people," where is the boundary between our imagination and reality? That's it, it's ......"

The halfling struggled to recall:

"What imaginary things can be done, what imaginary things are possible, and what imaginary things are impossible? Why do we make imaginations that we can't do in reality? ”

"We ...... Does it refer to the Gear Man? ”

Two people carrying a gear man came to the fourteenth question compartment, Chu Yun kicked the door open, and the two sat in together, and the symptoms of chest tightness were alleviated. Immediately, the chamber began to rise.

Just rising, Gu Chuan thought of another stubble:

"No, we can't sit in the compartment, if there is an accident in the compartment, we will be trapped here, and we will not be able to get out or enter."

This is the same as not being able to do an elevator when escaping from a fire.

Before the words fell, there was a terrible air vibration in the square outside the door, and the rising chamber shook synchronously. The glass book on the small table fell to the ground.

And Gu Chuan almost slipped his foot, and his head was about to hit the table.

The halfling man who fell to the floor stretched out his hand and grabbed Gu Chuan's head.

Then, after shaking violently again, the chamber terminated. The already dim lights went out without flickering.

In the deep darkness of the confinement, the young man's face was difficult to see.

The halfling said:

"It's an emergency stop in the event of a disaster...... The maintenance crew will come later. ”

Chu Yun frowned slightly and said:

"I don't think the gear guy who repaired it will come."

Gu Chuan said coldly:

"Now, I'm afraid your entire answer city is in chaos! We've all suffered! Waiting for help is not an option...... If this unrest can be resolved within a few standard hours......"

The halfling lowered his head, held himself in one hand, and shrunk into a ball:

"This ...... No way...... Dr. Kyung's ...... Well prepared, a lot of people were gathered, but the mentors should have called their compatriots together to act. Their conflict should be ...... Not a short time. ”

It wasn't a halfling's prediction, but a thought he had previously learned shared with psychopathic cogwheel people.

Gu Chuan and Chu Yun did not hesitate to search in this narrow space.

They had no harvest, no openings resembling emergency repair doors.

The halfling man said again:

"Yes...... Open the main door. Behind the door is actionable...... There is danger. ”

Chu Yun thought for a moment and clenched his white hand. The meridians on her hand were clearly visible, and the girl's slender hand slammed against the door.

The metal door is recessed with the outline of a fist.

She struck a second time, and the hinge connecting the door to the chamber was broken free by brute force.

The door was like an iron plate, and it was removed by Hatsuyun. They saw that it was pitch black outside.

"Wait a minute......

The halfling touched one of the gears on his shoulder with his hand. Its two bulb eyes emitted light that illuminated the world outside the door, revealing the outline of the closest structure to the most sophisticated mathematical curves.

"It's ......"

Gu Chuan looked at the soles of his feet. The so-called chamber, the same as he originally envisioned, was really a tooth of a huge gear.

They stood atop a giant gear, staring at a world of utterly mechanical transmissions made up of countless different gears and worms.

The gears are between the walls, in the underground, in the compartments between floors, in the ceiling, and also on the outside of the passages.

I'm afraid that everything that was originally was spinning in silence, wordlessly supporting the operation of the Gear Man world...... Until now, it has been forced to terminate the dispute between users.

Hatsuyun took a deep breath.

The gas in this space was unusually pure, similar to the sterile room environment she was in when she was operated on by Lady Ogiri.

They walked on top of the gears, along the worms that lay across the air, with their heads bowed, bent over, walking in the gaps of the gears.

"When did you start building this world?"

Gu Chuan saw that there were still words on the gears.

The words are written in the language of the Gear Man: Pure Land, which means the last place of peace.

The halfling on his back said:

"I don't know, I'm Jiwei, before I was born, this should be like this."

In the counting of gear people, after the load is the load, and after the load is the pole, and the generation of the pole is so small that I don't know where it goes.

Gu Chuan was silent.

In a world where the sun and the moon do not cycle, it is difficult to ask about time...... Because there are no signs.

According to the changes in natural conditions, Sunset City has reluctantly summarized a set of sequential and purely random solar terms, which are missing the key late autumn and winter, and are as warm as spring all year round.

The standard time of gear people is achieved by relying on the speed of the gear. The service life of the gear man is remarkable, but can it be compared with the four billion years of unchanged sunrise and moon setting that Gu Chuan is familiar with?

Apparently not.

Neither can complete the correct answer to the timing.

The gears in front were extremely close, and Gu Chuan bent down, barely crawling between several gaps that were connected and twisted together, as if they were sandwiched by teeth on both sides.

Fortunately, the direction of gravity has not changed.

They touched a few walls, stepped into a tighter gear space, and saw a vapor-powered spray that was spewing out an endless stream of pure gases. The gas burned slightly, and the trio turned and walked in other directions.

"You've studied so many issues, aren't you looking at the question of time? Don't you have an exact time? ”

"That's the fifteenth question...... What is the time and space we are in......" The halfling said with a much calmer mood, "The fifteenth question is said to be about to come to fruition, and there is a psychopathic cogwheel man, who was originally a disciple of the study of the problem of time and space, and has reached the point of a doctor, and he has been claiming that he is about to create an absolutely accurate eternal clock. Principle...... I'm sorry...... I don't know, but it's said to be a split strange thing that uses some kind of regular cycle. It built two of them, and proofread them, claiming that they would remain unchanged after at least tens of millions of turns, enough to reach the time when the cogwheel men of this generation were completely destroyed. The disciples of the 'World Problem' took an Eternity Bell with them and used it on their travels to explore the world. ”

Later, the trip to explore the world failed, and half of the world's problem solvers disappeared entirely. The second Eternity Bell was brought back by their last remaining curiosity.

As a result, it was found that its indication differed by dozens of standard hours from the first Eternity.

The Eternal Bell's attempt fails, the fifteenth question fails, and Dr. Eternity refuses to dismantle himself, and then becomes a psychopath cogwheel hiding in the shadows.

As soon as the halfling finished speaking, there was a loud tremor outside. It immediately shrank its head and let out a whining sound. And the light emitted by its eyes trembled, making Gu Chuan upset.

"Settle down! Calm down...... Illumination! He tapped the halfling's head, and the halfling lifted his head, stepped over the young man's shoulder, and re-illuminated the front.

This time the direction of the shaking was not the square, but in the other direction.

The trio cautiously avoided it. When Hatsuyun groped for the wall, he found a rare gap:

"There's a door."

"Open!"

They no longer hesitated, and Hatsuyun broke through the door. The three of them came together into a corridor passage.

The passage was also completely dark, and all the lights were out.

According to the signs, they may be in the thirteenth problem area, which is the kingdom of expressing the problem where the twenty is located.

The thirteenth problem is also mostly the appearance of animal skin. The difference between them and the sixth or tenth question is that the latter is hairless, while the former retains all the hair, such as the big cat-like positive twenty.

"Let's go out first, we can spend some time on the ghost ship, get ready, and then wait for the opportunity to act depending on the situation......"

Gu Chuan said to Chu Yun.

Hatsuyun nodded, agreeing with his idea.

They really don't want to wade into this troubled water.

It's just that...... Heaven never grants a man's wishes. And the situation in the city of Answers had already been chaotic to the extreme without their knowledge, and the collapse of the struggles that had taken place everywhere had made several roads impassable, and the cogwheel people were even more nervous. Gu Chuan and Chu Yun, who were carrying the halfling on their backs, trotted all the way, and as soon as they turned the corner, the light of the halfling's eyes shone on a huge silhouette.

The geared man was dressed in a deerskin and with antlers on his head, and was walking indifferently towards this side, like a patrolling guard. It had already discovered Chu Yun and Gu Chuan.

"Who are you?"

Kerler gear man, staring down.

The halfling seemed very surprised to see the antlers. It said fluently:

"Dr. Zhengyi, please help us, I'm Jiwei, and these two are guests from Answer City. We have nothing to do with this! We just wanted to find a safe place. They wanted to leave the city for a while, to escape the situation of this inexplicable disaster. ”

Dr. Shoichi ...... Gu Chuan heard this person mentioned in the twentieth day.

His position in the thirteenth question is similar to that of the mirror tube man Jing Yujiu in the tenth question.

Dr. Zhengyi is the most standard gear man.

But as I see now, Gu Chuan didn't look good when he saw this Dr. Zhengyi's face in deerskin. The gears hanging from its long, sharp horns seemed to indicate that there had been a fight before it turned here.

The light in its eyes flickered, as if it was looking at the people in front of it.

Finally, Gu Chuan saw the horns above its head emit a red light of shock and warning. This is Dr. Jeongchi's antlers and Kyoyo-koo's tube...... Or the body of Hatsuyun is the same, it is all ...... Something strange that melts into the body.

"Tutor Yuyu has an order, and now in the answer city, no one can leave, and anyone can be the murderer who caused the dispute."

It grimly pronounced.

"Come with me."