After dinner, Professor Chen went to bed early after arranging tonight's shift. In the dream, Zhang Gong woke him up and said softly: "Lao Chen, wake up, hell!" ”

When Professor Chen heard this, he quickly sat up and asked nervously, "Where?" What happened? ”

"New patterns have appeared on all four bridge decks on the Circle of Hades."

"What kind of pattern?"

"All kinds of scenes suspected to be in the ancient tomb, I can't tell it, you just look at it."

After Professor Chen woke up Ma Kai and asked him to bring the camera, the three of them quickly came to the temple. Zhu Gong, who was in charge of the second shift, saw Professor Chen coming, stepped forward and said: "Lao Chen, these patterns are the reaction of silicate after heat, quicklime is added to the yellow sand under these bridges, and heat is generated after encountering water, and these patterns come out after continuous baking on the bridge deck." ”

After listening to Zhu Gong's introduction of the specific reasons for the display of the pattern, Professor Chen lay on the ground and carefully looked at the pattern displayed on the bridge deck with a magnifying glass. After a moment, he stood up and instructed Ma Kai to take pictures of all the patterns immediately, and then said to Zhang Gong: "Lao Zhang, the patterns on this are strange, the tomb owner has taken great care to tell us this information in this way, it seems that the following is extraordinary." ”

Seeing Professor Chen's serious expression, Zhang Gong asked, "Old Chen, is it true that what is implied on this bridge must be something under that secret passage?" ”

Professor Chen nodded and said, "Nine times out of ten, that's the case!" Now I'm thinking, what kind of tomb is this, there are insects and beasts on this picture, it should be unrealistic here, if there is a closed space below, it should be in a dark, there will definitely be no animals and plants in that environment, unless it is connected to the outside, no matter how to adapt to the darkness, animals need a weak light to survive. ”

"There is nothing to be afraid of insects and beasts, now I see that he is very evil in this description, and he was eaten by insects and beasts, and he was shot by the organs, which is very scary!"

"It seems that it's not so easy to get in below, so let's go move a few folding beds, let's be on duty here, and we'll run back and forth in the province."

"It's okay, but those comrades in the local area will definitely not live here, they should be taboo more."

"Leave them alone, they decide for themselves, you go and move the bed, I'll look at the patterns again, and then figure it out."

After Zhang Gong and the others left, Professor Chen also looked at the patterns on the four bridge decks again. On the east side of the bridge, there are several people walking on endless steps, in the south there are insects and beasts biting and falling to the ground, in the west there are scenes of people being killed by arrows, and in the north there is a fire.

As soon as Professor Chen recorded a few scenes in his notebook, Feng Weiguo and the others all came in.

Feng Weiguo looked at the four bridge decks and walked up to Professor Chen and said, "Professor, how does this first organ feel so similar to the back of our hometown, it is also a kind of cycle?" ”

"It's not that simple, this should be different from your hometown, you have a hidden space, this is all the way down, the depth is deeper, which makes it easier for people to ignore a lot of details."

"And what would this be?"

"Maybe it's something that is visually misleading."

"It's just that it looks down, but it's not? Is that what it means? ”

"It's almost, for example, the strange slope in Shenyang, it looks uphill, but the car doesn't need to be in gear, and it can slide forward when it is placed in neutral gear."

"What about insects? This should be fake, right? ”

"I don't know if it's true or not, if there really are insects and beasts, it means that which place below is connected to the outside world, otherwise animals can't survive in the dark for a long time."

As he spoke, with a "boom", a stone slab fell and stood vertically. Seeing this, Professor Chen instructed: "Director Feng, you quickly arrange for the police to come over, watch here, and after the four stone slabs are all overturned, we will go down." ”

More than 10 minutes later, three other stone slabs were erected one after another. The secrets under the pit were also revealed under the gaze of more than a dozen pairs of eyes. However, what appeared in front of him was different from what everyone had guessed, and the steps leading to the mysterious place that I thought could be seen directly were covered in the middle by a square plank of more than two meters.

Professor Chen said to Zhang Gong: "Lao Zhang, you go and block the water behind immediately!" After saying that, he went to the pit and looked at the wood with a magnifying glass, and then said to the top, "This is also iron birch, come down a few people, help move this out, the entrance is below." ”

As soon as they heard that the entrance was below, several people immediately came down from the crowd of onlookers, all of whom wanted to see the mysterious passage as soon as possible. With the concerted efforts of everyone, the iron birch lid was moved aside, and immediately, an entrance with a length and width of about two meters appeared.

Standing at the entrance of the dark passage, the cool air coming out from below made a few people on the side shudder. Professor Chen tried to take a few steps forward, and soon returned to the ground. He said to Zhang Gong: "Lao Zhang, it should be a closed environment below, and the resonance of the air column formed by the space is obvious, which means that the passage may be very long. ”

"If the resonance sound is obvious, it should be a confined space, but it is not absolute, if the space turns or rises, it will also form an air column, and the resonance sound formed is the same."

"Yes, let's do it, grab the flashlight and walkie-talkie, let's take a few people down to explore first."

"It's better for me to go down with you first, and also test the impact of the environment below on the communication first, and then let them come down after making sure that there is no problem."

After speaking, Zhang Gong and Professor Chen stepped into the dark passage together. Although Professor Chen was wearing a thin coat, after entering this passage, he couldn't help but feel a chill invade his body, and the cold air was directly cold to the bones, which they had never experienced before.

After walking for about ten minutes, when they used the walkie-talkie to communicate with the above again, they found that the sound came and went, and the communication was not smooth. Professor Chen took out the chalk and made a big mark on the wall, and then returned to it with Zhang Gong.

Professor Chen breathed a sigh of relief and said, "It's too cold down there, so when you go down for a while, everyone should wear thicker and wear as much as possible, otherwise you will have to freeze your body." ”

Feng Weiguo was a little curious when he saw that Professor Chen was so serious, so he asked, "Professor Chen, is there an iceberg down there?" How can it be so cold? ”

"I'm not sure about the iceberg, but the cold below is really similar to the cold feeling of the air conditioner, that is, it feels like the cold air is blowing into the bones."

"It freezes in winter, but it doesn't freeze in the middle of the mountain, unless it's a special environment below, and I've heard of it near such a mountain."

"Regardless of whether there is an iceberg or not, everyone wears more, and you will naturally know it after you go down, from now on, a group of five, at 15-minute intervals, one after another, and now we will arrange the next group."