Tomorrow is 515, the anniversary of the starting point, and the day with the most benefits. In addition to the gift bag and school bag, this time's "515 Red Envelope Flip" must be seen, how can there be a reason not to grab the red envelope, set the alarm clock high~

After Lu Kui solved the measuring tool walking corpse, he walked up to Wang Zhichu's side and asked, "Professor Wang!" What's wrong? Aren't all these walking corpses solved? ”

"Air! This passage is so narrow, and it is completely impermeable, if this fire burns any longer, there will definitely not be enough air in it, and we will all suffocate here. Wang Zhichu expressed the worries in his heart.

As soon as he said this, several people understood at once, and all of them had expressions on their faces as if they were facing a great enemy.

The camels were also tired enough, and after experiencing the whole situation, they were all frightened, and now their bodies are still shaking.

Lu Kui said to Wang Zhichu without thinking: "Then let's wait for the fire to burn out, and then rush out the same way." ”

Wang Zhichu shook his head and said, "This is too risky, if there is a Gu poison walking corpse at the front of this passage, then we will undoubtedly kill ourselves when we go back." ”

"Now the only way is to find the secret exit." Wang Zhichu also said helplessly.

Wang Lihong thought for a while, and then said: "Now there are two possibilities. First, there is no other exit from this passage at all, it is just a simple dead end; Second, as Professor Wang said, somewhere in this passage, there is a hidden secret door. ”

The first possibility does make sense, once someone breaks in and is forced here by the walking corpse, it is undoubtedly a way of thinking. However, if you look at the design of the mechanism here, Wang Lihong thinks that the second possibility will be greater.

Now everyone's breathing was getting rapid, and the air was getting hotter and hotter, with carbon dioxide and the gases of the burning corpses. Fill the entire space.

"I don't know if you have noticed, this passage is actually inclined downward, which is even more disadvantageous to us." Lan Xi felt more and more that the development of the situation was becoming more and more difficult to deal with.

"Does it make a difference?" Luquai asked, puzzled.

Lan Xi stared at the four walls, observed, and then said: "Because the density of carbon dioxide is greater than that of air, if this channel is downward, then all the carbon dioxide will be deposited, just like a rising tide lifts a boat, squeezing the air upward, and the danger of suffocation that we face will come faster." ”

Wang Lihong patted Lu Kui on the shoulder. Simplistic, jokingly said: "Brother Kui, to put it simply, that means we could have lived for a minute, because of the deposition of carbon dioxide, we may be hanging in half a minute." ”

"What then?" Lu Kui was immediately confused.

Wang Lihong had a nonchalant expression on his face, and said with a haha: "So we must find the exit now, otherwise we can only hold hands and leave together." But it's good if there are a lot of us. There is also a table of mahjong on Huangquan Road. ”

"Then why are we still stunned, let's find the exit quickly." After Lu Kui said this, he immediately banged on the wall beside him.

Time is of the essence, and they can't have a good chat. Everyone began to split up to look for clues.

Wang Lihong touched the rock wall, and while knocking, he sorted out the clues he had now.

"Our current location should be somewhere in the middle of the Hundred Days Peak, if this Hall of Eternal Life is really underground. If this passage is a real passage, then if it leads to the underground palace, then this passage must go down. In this case, the possibility of a secret door is very high. But where should this secret door be? Wang Lihong thought silently in his heart.

Suddenly, Wang Lihong remembered something, so he asked, "Lu Kui! When you fell before, you said that your foot tripped over something, what did you trip over? ”

Lu Kui recalled it carefully, and then said, "It seems to be a stone the size of a fist." ”

"yes, I got tripped over it too. This hellish place, broken stones also bully people. When the camel heard Lu Kui's words, he also complained a little unpleasantly.

After Wang Zhichu heard this conversation, he immediately leaned over, and then asked the situation in detail.

He thought about it for a while, as if he had found something to rob the mine, so he said to Wang Lihong and them: "Look at these grounds, have you found anything?" ”

Several people looked at the floor of the passage very carefully, and did not find anything different from each other.

Lu Kui looked at the ground for a while, kicked it with his foot, and said, "This is the stone floor, what's the difference, isn't this one the same?" ”

Lan Xi's eyes lit up, and he suddenly realized: "Father-in-law, I know what you mean. ”

Lan Xi squatted on the ground, pulled it with a ruler, and then walked forward for more than ten meters, measured it again, and then walked forward for a distance, and measured it again.

After repeating this action seven times, she returned to us, looked at the stone slabs on the ground and said, "This passage is nineteen feet wide, and these stone bars are square...... Each brick is three feet and one inch long...... Sixths of six, so that this passage can fit just six of these bricks, just like what we see now. “

Lu Kui shook his head and gasped and said, "What does this mean? ”

Seeing that he didn't understand, Lan Xi continued to explain: "This shows two problems, first, with such a square brick arrangement, there is no other space for that fist-sized stone that trips you over; Second, it indicates that there may be some kind of mechanism running underneath the passage that requires a space of the same size to hold it. If analyzed in this way, the stone that tripped you over is likely to be the mechanism that opened the secret door of the secret passage. ”

When he finished saying this, Lan Xi's wheezing under ......his mask became louder, and his breathing became even more sleepy.

"Is that okay? So if someone accidentally gets it, wouldn't this door be opened inexplicably? Lu Kui understood, but he also felt a little unreliable.

"No, it won't. First of all, this is a completely sealed passage, there is no light at all, during the Qin Dynasty, there were no such night vision equipment and lighting tools as we have now, plus this mechanism is set up on the edge of both sides of the passage, our people's walking habits are to walk in the middle, so it is difficult to touch the mechanism. Secondly, if the people who enter this passage, like us, are chased by those poisonous walking corpses, and when they are panicked, they will only look ahead and flee for their lives, who will take a closer look at their feet. Even if we had these devices now, didn't we find them at the time? In the end, if the people who came in were really chased to the end of this passage, and they couldn't destroy the walking corpses, who would have the life to go back and see? So this mechanism looks crude, but it's actually very subtle. Although Wang Zhichu also felt a little difficult to breathe, he still carefully explained all the mechanisms.

Just as Wang Zhichu finished saying this, Lan Xi's body suddenly shook, and the whole person showed a state of detachment.

The situation of the two people on the camel's side is also good, but they also have difficulty breathing, and they feel like someone is pinching their throats, and their faces are flushed.

PS.5.15 "Starting Point" is raining red envelopes! Starting at 12 noon, grab a round every hour, and a large wave of 515 red envelopes depends on luck. You all go and grab it, and the starting coins you grabbed continue to subscribe to my chapters! (To be continued.) )