The four of them acted together and began to look for organs on the walls and ground of the corridor.

After searching for a long time, he didn't find anything special. Cheng Xiao leaned against the wall absent-mindedly: "Strange, the map should be correct."

Ouyang Fulin said: "Maybe the passage is here, but the mechanism is not here?"

Cheng Xiao's eyes lit up, then dimmed again: "No. The mechanism of this kind of secret door is generally not too far away from the secret door. Because if it is too far, they will not have time to enter before the mechanism is closed." After a pause, Cheng Xiao said again, "Of course, there are occasional exceptions. But according to our speculation, this passage is used for carrying. Why is there another passage in the middle of the passage for carrying things? It can only explain that this passage is not allowed to exist. Since it is a place that is not allowed to exist, they will definitely not keep the mechanism and the hidden door too far away, because the farther the mechanism is, the faster the hidden door will open and close. The longer the buffer time, the easier it is to expose the existence of the secret channel."

Ah Shu looked up at Cheng Xiao, his eyes were burning, and the emotional fluctuations in it were hard to ignore.

Ouyang Fulin also looked at Cheng Xiao seriously and said, "Your analysis is quite right."

Cheng Xiao was a little embarrassed: "What's the use of the right analysis? The key is to find the agency."

Ouyang Cheng suddenly asked, "Which places did we find just now?"

Cheng Xiao said: "On the wall, under the feet..." Cheng Xiao's mind flashed, and he stood up straight and said, "The organ is on top!"

The four of them understood at once, and looked up subconsciously.

Cheng Xiao didn't know the difference between the cave roof here and other cave roofs. He only knew that this kind of artificially trimmed passageway is generally relatively neat and flat.This naturally also includes the flatness of the roof of the cave.

But there are many scratches on the roof of the cave.

It was the kind of scratches that were scratched out with special iron tools after the construction was completed.

If someone looked up and found the imprint on the passage before it was closed, at most they would think it was a scratch left by a worker accidentally.But Cheng Xiao felt that this kind of scratch had survived until now, so it must be the key to the mechanism!

"Such chaotic scratches are somewhat like anti-detection techniques in criminal psychology. They are a means of confusing the public."

Cheng Xiao looked at Ouyang Cheng, held back for a long time, and finally couldn't help it: "Officer Ouyang must have been the best of them when he was in the police academy."

Ouyang Cheng gave Cheng Xiao a cold look: "You'd better see what mechanism is inside these scratches first."

Cheng Xiao felt ashamed and didn't dare to say anything.Although it was up to the four of them to find the mechanism, but judging from the appearance of these three people, it seemed that they all focused on cracking the mechanism on themselves.Did they really think they could crack the key?It seems that these three people are much smarter than him.

"I just think... well, there are many people, so let's have a look together." Cheng Xiao laughed, and walked a few steps casually with the Warring States Silk Book in his hand.

Both Ah Shu and Ouyang Fulin didn't want to put too much pressure on Cheng Xiao, so they followed Cheng Xiao's wishes and carefully looked at the scratches on the top of their heads to ponder.

Ouyang Cheng didn't really want Cheng Xiao to crack the mechanism alone, so he was also secretly thinking about the mysteries in the scratches.

After pondering for more than ten minutes, in the dead silence all around, Cheng Xiao had a faint understanding in his heart, but he was not sure.

"Have you figured it out yet?"

Ouyang Fulin looked over and frowned.

Ah Shu also frowned.

Cheng Xiao looked at Ouyang Cheng again, but he only got a cold look from him.

With a dry laugh, Cheng Xiao said, "I have an idea... well, tell me, who will leave this passage and mechanism behind?"

Ouyang Cheng said coldly: "Aside from the workers, what else is there in the aisle for carrying things?"

Ouyang Fulin raised his eyebrows, but didn't answer.

Ah Shu lowered his head and thought for a while, then suddenly raised his head to look at Cheng Xiao and said, "You mean..."

Cheng Xiao didn't expect Ah Shu to be the first to understand what he meant. He was slightly surprised in his heart, but he didn't show it on his face: "These scratches are rough and wrong, and they were indeed left by workers. Judging from his rough tools and techniques , his organization is not hidden. We made it complicated. In other words, it is because we did not exchange the status of ourselves and the workers who left this organization, so we couldn’t figure out the key point.”

Ouyang Fulin's eyes flashed, and he understood it all at once.

Several people turned their attention to the scratches on the roof of the cave again. Unfortunately, those who had clues still had no clues.

Cheng Xiao scratched his head, glanced at Ouyang Fulin and Ouyang Cheng hesitantly, seeing that they were frowning and thinking, he had no choice but to focus on Ah Shu for a while.

Seemingly aware of Cheng Xiao's gaze, Ah Shu immediately turned his gaze to him.Then he walked slowly to Cheng Xiao's side without hesitation, lowered his head slightly and said, "Go."

There was surprise in Cheng Xiao's eyes, and he was stunned for a while before looking away and saying, "Yes."

Ouyang Fulin and Ouyang Cheng noticed the interaction between the two, and immediately turned their gazes over.

Cheng Xiao walked to the center of the corridor, looked up at the scratches on it, found the longest one among the messy scratches, and then walked down that scratch until he reached the wall on the left.

Looking back at the other three, Cheng Xiao said, "The agency should be here."

This wall is no different.It is the same as other places, it is trimmed very flat, but at the bottom, there is a hard-to-find depression, only the size of a palm, if you don't look carefully, you will only think it is a hole left by the worker's carelessness during trimming.Occasionally there are some uneven places on other walls, some protruding or recessed, which is not a big problem for their projects.

Ouyang Cheng paused for a moment, then said, "Simple mind also has its advantages."

Cheng Xiao grinned and joked: "Indeed. I just think of myself as a worker at that time. If he wants to tell his companions where the road is, what method will he use? It is simpler and more convenient. There will be no mistakes." After saying this, Cheng Xiao stretched out his foot and kicked the sunken place.

There was a very shallow "click" sound in the passage that had been silent all along, and then there was a very slight vibration on the ground.In the next second, before Cheng Xiao could react, his feet were empty, and his whole body fell down with a "shua".

"Cheng Xiao!" Ah Shu and Ouyang Fulin rushed over at the same time, jumping down one after the other.

Ouyang Cheng hurriedly grabbed the left backpack and followed closely behind.

After the three jumped down, the small hole above was blocked again.

Below this is a waist-deep waterway, only about five or six meters away from the hole above.The four jumped down one after another, and the sound of "boom, boom, boom" was endless.Cheng Xiao who was the first to fall had already hid on the wall next to him.

Ah Shu and Ouyang Fulin also stood up from the water one after another, and walked towards Cheng Xiao.

The last one to fall was Ouyang Cheng, who emerged from the waist-deep water, wiped his face, stared at the other three people in the water for a long time, and said, "Did you follow Cheng Xiao after meeting Cheng Xiao?" Like water? It’s okay to be impulsive, and you don’t need your brain!”

Ouyang Fulin glanced at Ouyang Cheng with his usual sharp eyes, but didn't speak.

Ah Shu has nothing to do with Ouyang Cheng, let alone talk to him.

Cheng Xiao, on the other hand, felt a little uncomfortable.

Coughing in a low voice, Cheng Xiao shook the silk script in his hand and said, "This is the road shown on it, let's go along it first."

Ah Shu and Ouyang Fulin nodded at the same time, and the three of them ignored the frosty Ouyang Cheng, turned their heads and walked towards the depths of the waterway.

Ouyang Cheng was so angry that he almost vomited blood.

It's a pity that even if he was so angry that he wanted to vomit blood, but because he had always belonged to the group of people with mild facial paralysis, the expression on his face didn't change much.As a result, the three people in front didn't know how flustered he was at this moment, and they just chatted on their own.

Cheng Xiao said: "I think there are more and more things glowing in the water."

Ah Shu nodded: "Well, not only more, but also more conspicuous and brighter."

Ouyang Fulin said: "Maybe we are already close to the birthplace of this substance, that's why it happened."

Cheng Xiao said again: "Teacher Ouyang, what do you think will be ahead?"

"Just go there and you'll know."

Cheng Xiao laughed: "Actually, this is pretty good, at least we are still alive."

Ouyang Fulin also laughed, this was the second time he smiled at Cheng Xiao.

There was also a faint smile on the corner of Ah Shu's mouth, but no one saw it.

Ouyang Cheng was carrying a backpack on his back, with countless black lines on his head.

After walking for more than ten minutes, Cheng Xiao felt that the temperature of the water was getting lower and lower, and the heat on his body was getting less and less. It almost felt like being soaked in cold water in the twelfth lunar month.

Ah Shu and Ouyang Fulin grabbed Cheng Xiao's arm, Ah Shu said: "I'll carry Cheng Xiao on my back, you go ahead."

Ouyang Fulin frowned, and there was a trace of hesitation in his eyes.

"The water temperature is not normal. No one can stand this temperature except me." Ah Shu explained, "Leave Cheng Xiao and the backpack to me, and you and Ouyang Cheng will go ahead and reduce the burden on you as much as possible. Otherwise, it will continue like this." , before the end, you will be frozen to death."

Ouyang Cheng followed up, handed the backpack to Ah Shu, stepped forward and grabbed Ouyang Fulin's arm, and said, "He is right, we must lighten the burden and speed up. The water depth here has not decreased, but there is a rising trend. Trend, if you don’t hurry up, you may really be frozen to death.”

Ouyang Fulin glanced at Ah Shu, nodded slightly and said, "Take care of Cheng Xiao."

Ah Shu said: "My life is given by him."

Ouyang Fulin looked at Ah Shu carefully, finally turned his head and said, "Let's go."

Seeing Ouyang Fulin and Ouyang Cheng walking forward, Ah Shu immediately picked up Cheng Xiao and his backpack and followed along the waterway.

In order to prevent Cheng Xiao from getting too much cold water, Ah Shu put most of Cheng Xiao's body on his back, and the backpack straddled one arm, and most of it was dragged in the water.

Cheng Xiao tightened his arms around Ah Shu's neck and said, "The route on the silk book...doesn't move."

Ah Shu said: "Maybe it's because that's our destination. Cheng Xiao, don't think too much about it."

Cheng Xiao laughed lowly: "Ashu, you are becoming more and more like a human being now, and you can comfort others."

Ah Shu said: "It's not comfort, Cheng Xiao, you won't be cold if you talk to me."

Cheng Xiao hangs down his eyes and looks at the face close at hand, with mixed feelings in his heart: "Ashu, why...why did you treat me like that?" If you don't do that, maybe we can still be friends.

Ah Shu paused for a moment, but only for a moment.He didn't stop, didn't answer, just kept going.

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