After the door opened, Xu Rui's front was empty, but there was a huge mirror maze entrance, and there was only a narrow passage as far as the eye could see, and the four walls were full of bright mirrors.

The angles of the mirrors are also obviously carefully designed, each mirror can refract the image on the other mirrors, and the countless mirrors are superimposed on each other, plus the passage that extends inward, resulting in a dizzying sense of perspective.

Xu Rui stood at the door, only to feel that there were thousands of himself in it, as if passing through an infinitely extended strange world.

"Damn it."

Xu Rui cursed to himself, and when he looked up, he saw an iron pipe exposed from the rammed earth ceiling of the labyrinth, similar to the microphone used on warships before the invention of radio.

Xu Rui's eyes sank, and he finally understood why the voice was so strange, it turned out that he himself was not behind this door at all, but through a microphone, the voice of unknown place was transmitted.

But that makes the situation even worse.

The scream just now was sent by Di Ting, indicating that he had probably been poisoned, and this person was not in the room in front of him, and the possibility that Xu Rui could save him was very small.

But even so, Xu Rui was unwilling to let go of this hard-won clue.

Thinking of this, Xu Rui gritted his teeth and rushed into the maze.

However, the horror of the mirror maze is that it seems to put people in a fantasy world, using visual deception to make the nearby passage unreal, thus increasing the difficulty of finding the exit.

Xu Rui didn't know how big this maze was, and even whether there was an exit, and the time was very tight at the moment, so he couldn't find it slowly.

After a little hesitation, Xu Rui suddenly looked at the fist-sized iron microphone, pulled out the broken blade and slashed at the ceiling.

With a crisp sound of "pop", the broken blade slashed into the ceiling, and the invisible sword qi attached to the sword body instantly penetrated several inches along the lines of the rammed earth ceiling, and the entire ceiling began to crack like a spider web, and the microphone buried in the ceiling immediately fell.

"Found it!"

Xu Rui's eyes froze, and he immediately looked in the direction of the microphone, as long as he followed the direction of the microphone, he could find the true location of Diting's hideout.

After determining the direction, Xu Rui no longer hesitated, and with a sword, he split the mirror in front of him, smashed the partition that fixed the mirror, and then smashed the remaining partition headlong, and rushed in with the flying residue.

In this way, Xu Rui's "digging the road in the mountains" as long as it is pointed in the direction of the microphone, no matter what is in front of him, he will forcibly break it until he finds the nearest passage.

In less than half a pillar of incense, Xu Rui finally fought all the way to the end of the labyrinth, and sure enough, as he expected, at this moment he was in an underground secret room, and the microphone passed through the thick layer of soil and began to extend upward.

Xu Rui made a slight assessment and found that the soil layer was about several meters thick, and it would be a waste of time to break it directly, and what he lacked most at this time was time.

After a moment of silence, Xu Rui suddenly gritted his teeth, took out two grenades from his arms, then raised his sword to split the microphone, and then threw the grenade that had been pulled out of the safety and threw it into the microphone that extended upwards.

"Boom" two loud bangs.

The grenade exploded in the earth, shaking the chamber like an earthquake.

For underground structures, the soil layer of several meters is not too thick, and the underground is hollowed out and loses its supporting effect, once the grenade explodes, the soil layer that has been dispersed can not be supported immediately and collapses.

Xu Rui's heart tightened, and he hurriedly flashed back, and the "bang" dirt suddenly poured down, instantly completely burying the position where he was standing, and a hill formed by the collapse of the soil appeared in the secret room in front of him.

"Hoo ......"

Xu Rui breathed a long sigh of relief, did not dare to delay in the slightest, and immediately used the broken blade to dig up the soil, and after a while, a layer of collapsed soil on the surface was dug up, and a large hole leading to the upper layer was finally revealed.

Xu Rui didn't hesitate to get in, about two or three meters above should have reached the ground, but there was still no window in sight, it was about another secret room.

Most of the chamber had been blown up by the explosion, and only a purely wooden passage stretched into the distance, along which the microphone also happened.

Xu Rui glanced into the passage and immediately got in.

The passage was only four or five meters long, and after turning a corner, it came to the end, Xu Rui knocked on the wall under the microphone with the broken edge, and immediately there was a crisp "dong dong" sound.

"This wall is hollow."

Xu Rui knew it in his heart, and raised his sword and slashed.

The wooden walls were immediately chipped, revealing another chamber hidden behind it.

Xu Rui sharpened the wooden thorns and drilled into the secret room, only to see that the secret room was only two feet in circumference, and it was pitifully crowded, which could only accommodate a high stool and a square table.

Under the barstool lay a four-foot dwarf, short hands and feet, eyes bulging, a silver needle stuck in the door of his head, his whole face was dark and purple, as if he had just died.

Xu Rui compared it slightly, and found that if this dwarf was sitting on a high stool, his mouth should be just enough to reach the microphone, and the voice he heard before was made by him.

Who would have thought that the omniscient Diting could be such an unassuming dwarf?

And just now Xu Rui heard the sound of someone falling from a high place, which was the sound of this dwarf being stabbed by a silver needle and falling off a high stool.

Xu Rui didn't have the heart to mourn for this perennial intelligence dealer, he carefully examined the dwarf's body, and found that the dwarf's left hand was slightly thicker than his right hand, and there was a callus left by holding a pen on the palm of his left hand, thinking that this dwarf was a left-hander.

He first dipped his handkerchief in a little of the poisonous blood that had spilled from the dwarf's mouth as a sample, and then his eyes swept left and right, and his gaze fell on the square table.

On the square table were the four treasures of the study, and half a word was written on a freshly drawn note, and it was obvious that the dwarf had made a mistake when he was writing with a pen.

Xu Rui picked up the note, only to see that the unfinished half of the word was actually a "horizontal hook" stroke, and he didn't know what it meant.

He didn't have time to think about it, so he put the note in his bosom, and then looked around again, and saw that the secret room was an enclosed space, lit by an oil lamp, and there were no extra doors and windows around.

The secret door that was cut by himself just now is the only way in and out here, that is to say, in the concept of modern criminal investigation, this is a closed room murder case.

In such an environment, this dwarf should be very safe, but the murderer killed him at the most critical moment, indicating that the murderer must have eavesdropped on his conversation with the dwarf throughout the whole process, so it is very likely that the murderer has been lurking in this secret room.

In order to ensure secrecy and sound transmission, this secret room was built very crowded, and only one place could hide people.

Thinking of this, Xu Rui suddenly raised his head and looked at the ceiling.

It's a pity that the ceiling is already empty at this time, where is the murderer?

Xu Rui did not feel lost, but climbed the wall close to the ceiling to take a closer look, and sure enough, he found a little red mud in the corner of the wall near the ceiling.

The red mud had dried to the ground, probably from the soles of the murderer's feet before entering the chamber, and then rubbed into this position.

Judging from the fact that the red mud is dry, the murderer should have been lurking here for at least one or two hours, and there is red mud here, but no footprints have been left, indicating that the murderer is definitely a master!

There was such a useful clue left in the entire secret room, and Xu Rui had a faint feeling that there was something he had missed, but after thinking about it, he couldn't find anything valuable.

At this time, there was a faint noise behind the east wall of the secret room, Xu Rui listened attentively, and found that it was the noise of Babao City, and it seemed that many people were gathering in this direction.

Xu Rui's heart moved, knowing that this place was not suitable for a long time, and he hurriedly glanced at the secret room, and only after making sure that there were no more clues did he turn around and get out of the secret room.

Xu Rui first returned to the passage that had been blown up, and then chose another direction, the explosion obviously caused a huge commotion in Babao City, and many merchants and vendors shouted around them, I am afraid that it will not be long before someone comes in to find out.

Xu Rui didn't want to be surrounded, so he hurriedly bypassed the explosion point, trying to find an exit and get out as soon as possible, but when he walked along another passage into a new secret room, his face suddenly changed, and his steps paused unconsciously.