"Serial tomb gates? What serial tomb door? "It's the first time I've heard of it, so I asked with some curiosity.

On the side, Xiao Yue also looked puzzled, while the Yang brothers and sisters had calm expressions, obviously knowing what this serial tomb door was.

"The chain tomb door is actually a kind of anti-theft method designed by ancient tomb craftsmen for the ancient tomb, and the reason is very simple, that is, to build many tomb doors in a tomb passage from the back of the main tomb. There is no limit to the number of these doors, ranging from a few to dozens to prevent tomb robbers from entering the main tomb to steal burial goods. Li Huiyan said in one breath.

"I see." I nodded, and I had a general idea of the chain tomb door.

The serial tomb door may make people think it is very simple, isn't it just to add a few more tomb doors in the tomb road? This is not the case, and it may not take long to open a few more tomb doors in the tomb hallway.

But don't forget, this is an ancient tomb.

The oxygen content in most of the ancient tombs is much rarer than the outside world, if the distance between the two tomb doors is very close, the back tomb door is closed and the front tomb door cannot be opened for a while, it is very likely to cause a lack of oxygen in the closed tomb road.

Everyone knows that hypoxia is not a joke, and you may not feel anything at first, but it is definitely fatal after a long time.

After figuring it all out, my mood is not so relaxed anymore.

At this time, where we are, the distance between the two tomb doors is only more than a zhang, and Li Huiyan and Xiao Yue, plus the Yang family brothers and sisters and the village chief Yao, a total of six people need a lot of oxygen to breathe.

A few minutes is not a concern, but ten minutes and tens of minutes can be fatal, not to mention that the further back on, the oxygen content between the tomb door and the tomb door will only become more scarce.

When I thought of the time it took for Village Chief Yao to open the first tomb door, it took me more than ten minutes, and I felt that the sky was about to fall, and this was the rhythm of being suffocated to death.

"Village Chief Yao, how long will it take to open this tomb door?" Feeling a little uneasy in my heart, I stepped forward and asked Village Chief Yao.

"I don't know, I've never been to the main tomb, and the mechanism solutions of these tomb doors are all seen from the books handed down from my ancestors, I can't say exactly how much time it will take, or ten minutes." Village Chief Yao said without looking back.

"Ten...... Ten minutes? "I was a little dumbfounded and didn't know what to say.

Ten minutes is still less, if it is more, it will not be dozens of minutes?

The oxygen level in this small space is absolutely impossible for us to use for so long, but I am afraid that within ten minutes all of us will have symptoms of hypoxia.

"Village Chief Yao, how many of these serial tomb doors are there?" I was a little uneasy and asked again a question that was of great concern to everyone.

"The ancestors recorded that there were sixteen tomb gates in this pair, and the further they went, the more complicated the mechanism became." Village Chief Yao thought for a while and said.

I was completely speechless, I had experienced so many lives and deaths in the tomb, but I didn't expect to be planted at this last moment.

Looking at Village Chief Yao's slow appearance, I don't have any hope that he will be able to open the tomb door in ten minutes, you must know that this is only the second tomb door, and the mechanism of the tomb door becomes more and more complicated the more it goes, it is a dead end at all.

"What now?" I walked back to the crowd and asked.

No one spoke, and the graveyard was surprisingly quiet. The conversation between me and Village Chief Yao just now reached everyone's ears, and everyone understood what we would encounter next, and everyone was a little heavy.

"Gotta find a way, right?" I said again.

After saying that, I raised my head and took a few glances in the tomb.

The walls of this tomb are made of hard granite, which is smooth and flat, and looks extremely thick, definitely much thicker and harder than the previous tombs.

"Why don't we go back? Although there are thousand-year-old female corpses in the tomb just now, there will always be a glimmer of life if everyone unites. Li Huiyan's face was a little ugly, and she said softly.

"Yes, yes, I don't want to be suffocated here, it's better to go back and fight to the death with the thousand-year-old female corpse, I heard that the suffocated person died ugly." Xiao Yue also said with a look of fear.

"Well, when the time comes, our brother and sister will shoot together, and I won't believe in fighting that thousand-year-old female corpse." Yang Baichuan followed and said.

Yang Yuqing didn't speak, seeing her gearing up, she also looked eager to try.

In fact, the thoughts of the people are similar to mine, the sixteen tomb gates are simply a desperate number, the further you go, the more dangerous it will become, and continuing to walk is simply a dead end, and no one has the confidence to go to the end.

Although the thousand-year-old female corpse in the tomb outside is terrifying, everyone can still fight with her if they are united. What can you do if you stay in the tomb? Do you have to hit the tomb door in front of you with your head?

Thinking like this in my heart, I was about to go to find the switch to open the tomb door, when the deep voice of Village Chief Yao came: "Don't be delusional, you can't go back, this tomb road can only enter and not exit, if you want to survive, the only way is to open all sixteen tomb doors and enter the main tomb." ”

"Can't go back?" Village Chief Yao's words made everyone dumbfounded again, and if we can't go back, doesn't it mean that we all have to die here.

Yang Yuqing was a little unbelieving, took a few steps forward, and kicked on the first tomb door.

With a bang, the tomb door didn't move, and there was not even a trace left on it, let alone any fissures.

I'm a little desperate at this moment, everyone knows how big Yang Yuqing's ability is, if she can't kick open the tomb door with all her strength, others can't even think about it, and they can't compare to her.

At this moment, I hope that the thousand-year-old female corpse in the tomb will go berserk soon, if she can run and attack the tomb door, then our hope of being rescued is much greater.

Even the bronze coffin can poke out a few holes with your fingers, and the tomb door in front of you is not as broken as tofu in front of the thousand-year-old female corpse?

But all of us were disappointed, and after waiting for two minutes, the tomb outside was still quiet, without any sound at all, and the thousand-year-old female corpse didn't know whether she had left or was still in the tomb.

Time passed slowly, and in the blink of an eye, we had entered the tomb for about five minutes.

By this point, I could already clearly feel the temperature in the graveyard rising, and the air in my lungs was no longer as comfortable as it used to be.

Obviously, as we spend more time in the cemetery, the amount of oxygen in the air becomes less and less, and the carbon dioxide exhaled by each person makes the air in the cemetery seem a little hot.

"I ...... I can't do it anymore, I feel like I'm going to die. Xiao Yue sat on the ground, rolled his eyes and gasped.

"Hold on a little longer, maybe Village Chief Yao will be able to open the tomb door in a while." Li Huiyan squatted on the ground and comforted her.

But anyone can hear it, and she is afraid that even she won't believe it. At this time, everyone's face turned red, and it was even hotter when touched with their hands.

"Zhang Sansan, hurry up and put out the torch!" Li Huiyan suddenly stood up, stared at the lamp oil torch in my hand, and said loudly.

After her reminder, everyone reacted, and no one remembered this stubble since entering the tomb, and the lamp oil torch in my hand was the most oxygen-intensive to burn.

No wonder, no wonder I expected that the oxygen content in this tomb was enough for us to breathe for about ten minutes, but after only five minutes, there was some inability to breathe in the tomb, it turned out that this lamp oil torch consumed a lot of oxygen.

Hearing this, I quickly picked up the torch upside down and pressed it the ground.

Immediately afterwards, the flame of the torch was gradually extinguished until it slowly disappeared.

"Huh, it turns out that the oil of this ever-bright lamp is not as magical as the legend, and it can't be extinguished if it is lit, it's not easy to extinguish." Looking at the extinguished torches, I muttered a word of satisfaction.

Another minute or so passed, and after making sure that the torch would not rekindle, I nodded in satisfaction and picked up the torch that was pressed to the ground again.

However, something unexpected happened.

Just as I had put the torch back up, a faint flame suddenly appeared at the top of the torch that had been extinguished, and then the range of this flame became brighter and brighter, and in an instant it spread throughout the torch.

With a pop, the torch that had been extinguished ignited again, and there was no intention of extinguishing it at all.

"This ...... Is the ever-bright lantern really so magical? "I couldn't help but be stunned when I saw this scene.

Originally, I was proud to think that the lamp oil torch of the ever-bright lamp was nothing more than that, but I didn't expect to be slapped in the face so soon, and my whole face was hot and painful.

Of course, the hot face was not only a little painful, but also very hot, and as there was less and less oxygen in the closed tunnel, and more and more carbon dioxide, we felt a little dizzy and dizzy.

"Rice cake, why haven't the torches been extinguished yet, I'm going to die." Xiao Yue leaned against the stone wall and wailed.

The Yang family brothers and sisters and Li Huiyan also sat on the ground like Xiao Yue at this time, everyone was in a bad state, looking groggy as if they might fall asleep at any time.

"I can't seem to extinguish this torch." I also said helplessly.

After saying that, he pressed the torch upside down on the ground again.

The first time I saw the lantern, I really didn't know much about this thing, especially the lamp oil in the lantern, which is made of the legendary mermaid oil, which has a very low ignition point and a long burning time.

I looked down and thought that maybe the torch hadn't been out long enough, so the temperature at the top of the torch hadn't dropped below the ignition point of the oil, which would cause the torch that had been extinguished to burn again.

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