After breakfast, Professor Chen called everyone to the Hades Temple for a small meeting, he stood up and said: "Comrades, about the encounters in the newly discovered passage last night, I first conducted a review, without careful analysis, blindly led everyone into a strange and dangerous space, and almost had an accident, I am sorry for everyone, and I have also failed everyone's trust in me. ”

After speaking, Professor Chen bowed deeply to everyone, and then continued: "Through yesterday's encounter, I am also sure of one thing, that is, it is intricate underneath, there are many passages entangled with each other, and there is only one real passage, which is also hidden in these true and false passages, in order to ensure the safety of our team members, I suggest that we use instruments to detect the progress today, and draw a map of the distribution of hidden space, and after these tasks are completed, we will analyze and make a feasible plan." ”

Speaking of this, Zhang Gong interjected: "Professor Chen, the passage below should be a number of hidden spaces that exist independently, not should be connected to each other, if it is interconnected, then no matter how much we detect, it is not too meaningful, after all, it is easy to go around together, and you can see clearly which is on the drawing, but when you actually walk, you will be affected by the vision and environment, and go elsewhere." ”

"If it's a separate passage and it's an infinite loop, then it's relatively easy to crack such a mechanism, and the layout doesn't have to put the uneven design inside, through the loop we walked into last night and found that the inside is a regular undulation, and the whole space looks like it's artificially built rough, and it feels like I've never seen it, but it's a sense of déjà vu, and it's this feeling, so the more I think it's telling the problem."

"You mean the space in there is ups and downs? If you say so, there is a big possibility that the space will be covered with space. ”

"Yes, this is exactly what I care about the most, if it is up and down, it is most likely to hide the unknown space, if so, Zhang Gong, what kind of structure do you think he is most likely?"

"If you assume that there is another space in the closed passage, this is to determine that Qimen Dunjia is used there, and the basic idea of Qimen Dunjia is the balance of yin and yang, the five elements of Shengke, since this appears here, then there is no need to worry too much, pay attention to the soles of the feet, such a mechanism trigger often relies on gravity and balance, so as long as we pay attention to the steps under our feet, we can avoid these."

"Maybe it's not that simple, although I don't know much about Qimen Dunjia, but I can confirm one thing, that is, we walked to that space without any warning, if it was a single space, then we would find a problem after walking around twice, indeed, we changed the direction of the passage by changing the original balance, but how did the passage that opened for us close after walking in? Have you thought about this? ”

"The idea of a delay was not very realistic in ancient times, but it was easier to close, for example, if you take a few steps forward and then trigger the balance mechanism in it, so that the passage will be closed again, which is very likely and relatively easy to achieve."

"Let's not discuss this space and passage issue first, let's go forward, don't bring too many materials, travel lightly, in order to prevent accidents, in addition to headlights, flashlights, walkie-talkies, bring more chalk to make marks, in addition, Director Feng, you work hard, go to arrange a few walkie-talkie repeaters, the signal is deep below, the natural attenuation is serious, affecting communication, and then let the electrician connect the electricity into the channel, five meters a lamp."

After regrouping the team, Zhang Gong and Ma Kai went in, followed by a large group of people. Soon arrived at the place where Professor Chen was trapped, and after leaving half of the people on it, Zhang Gong and the others went in.

In order to find out how the passage was changed and the wall was reset, Professor Chen specially asked Ma Kai to walk with him at the rear. Sure enough, the person in front had not gone far, and as soon as he disappeared from sight, the gate slowly began to close, and at the same time, a wall behind it was also retracted into the mountain.

After understanding the reset method, Professor Chen smiled, made a few big marks on the mountain, and was about to explain the principle to Ma Kai, when Zhang Gong shouted: "Old Chen, you come here, there is a discovery!" ”

"What discovery?"

"There's a space under our feet that leads to the mountain to our left, and there's a big crater underneath."

"Oh, could the pit be a counterweight?"

"It looks like it should be, it's not too deep."

"Then go ahead and start paying attention to every detail now."

In the course of his continued exploration, Zhang Gong made new discoveries, which were close to Professor Chen's speculation, that is, that space may be superimposed and interconnected. Because the further you go, the more hidden spaces you discover, but for the time being, you don't know what they're for.

Soon, they went back to the place they came from, looking at the marks drawn by Professor Chen on the mountains on both sides, Zhang Gong carefully probed on the side, and soon found a hidden stone, and after pushing hard, the wall opened again.

"Lao Chen, it seems that your intuition is right, there are indeed a lot of suspicious points in this, through the detection of the inside just now, many hidden spaces are connected to the inside, just separated by a wall."

"Well, now I just think the biggest suspense here is that we were cold when we first came down, and the passage should be correct at that time, but I don't know why, we haven't felt cold these times, so we may have entered a misunderstanding."

"I don't think there are any misunderstandings, it's just that there are a lot of roads to choose in front of us, and it should be that after we move forward a little more, there will be new spaces to discover, and these true and false spaces and channels will waste a lot of our energy."

"It's okay to waste energy, let's move on and see how we can find the cold feeling again."

After resetting the passage again, a team of men and horses continued to move forward, following the marks made by Zhu Gong and them last night, and soon arrived at the place where Zhang Gong and they drew the marks last night. Just as Zhang Gong continued to probe forward, he stopped and turned to Professor Chen and said, "Old Chen, there is the same passage in front of us as just now, and it must be another cycle if we follow it, and this is also a passage in front of and behind, but the difference this time is that no hidden space was found on the steps to place the trigger device." ”

"The first time we came down, it was very short, and it always felt very cold, and now that we have been walking for so long, in terms of time and distance, that space should be behind us, not in front of us, or left and right, I judge that there is still a road in this way!"