As the team continued to advance, soon all the directions on the right were searched, and still nothing was found. When they returned to the burial pit, Feng Weiguo's work had also advanced here, and the master electrician and the master who did the monitoring were busy with their own work, working nervously.

Seeing Professor Chen and them returning, Feng Weiguo took a few steps forward and greeted, "Professor Chen, you are tired, you can rest." ”

"It's okay, now the entire right side is almost certain to be nothing, let's search the left side later, there should be a find."

"Okay, if you bring your 3D imager, it should be much more efficient, there is ice everywhere here, and there are some places that you can't see clearly, and if you don't pay attention, you will miss something."

"Yes, today is a rough down, tomorrow I will bring instruments and other equipment down to do a systematic scan."

Chen Zhijun, who was seriously watching the old horses and their work, seemed to smell something unusual, but he couldn't tell what was wrong, and when he saw Professor Chen and they were back, he called Professor Chen and said, "Dad, I seem to smell something, I can't tell what it is coming from." ”

Professor Chen, who also had a sensitive nose, immediately realized this when he heard Chen Zhijun say this, and he immediately reflexively said, "The people below, come up!" There is a situation below! ”

The old horses who were working hard below suddenly heard Professor Chen's shout, and immediately threw down the corpses in their hands in a panic, and climbed up one by one by pulling the ropes.

Looking at the sweaty migrant workers, Professor Chen said, "You guys should rest first, there must be a problem below." ”

Zhang Gong and the others walked to the pit, looked at it carefully, sniffed it again, and then asked Lao Ma: "Old Ma, have you noticed anything abnormal below?" ”

"Anomalous? I didn't think anything of it, it just got a bad smell. ”

"What about the others?"

"Nothing else, yes! Some! Just now, I felt that the lower down the corpses, the less stiff they became, the freeze didn't seem to be so strong, and there were green spots on their faces and hands. ”

Zhang Gong said thoughtfully, "I understand," and then walked straight to the corpse that had just been thrown up, squatted down and looked at something.

Chen Zhijun didn't understand what Zhang Gong meant by "understood", so he walked up to Zhang Gong and asked, "Uncle, what do you mean by understanding what you just said?" Did you find out what's going on down here? ”

"There are layers of corpses piled up on top of this, just like a quilt, covering the bottom tightly, and now it looks very cold on the top, but it is not like this below, the corpses covered above block most of the cold, and the bacteria on the corpses below have a chance to grow and multiply, so as to slowly let the corpses rot from the bottom up."

"Then it's time to freeze when it's done?"

"Fool, I said it, these corpses above have created conditions for the below, although it is cold in this cave, but decay is inevitable, but the speed is slowed down many times, so that the top of the environment will never decay, and will only gradually decay from the bottom to the top and then stop decaying when it reaches a certain level."

"And how many degrees are in this hole?"

"I measured just now, basically between minus 5 degrees and minus 6 degrees, and the surface temperature of some places is minus 9 degrees, and locally it is even lower.

"Uncle, if it's minus 5 degrees here, then in addition to causing dehydration, there shouldn't be decay, right? I don't understand that. ”

"Fool, I'm too lazy to take care of you, come, Zhu Gong, you can explain to this fool."

After Zhang Gong finished speaking, he pulled Zhu Gong, who had been snickering on the side, and squatted by himself.

Zhu Gong saw Chen Zhijun's serious appearance, smiled and said: "Actually, what your Uncle Zhang said is right, that is, what he said is too general, so to put it simply, the corpses above are covered layer by layer to play a relatively insulating role, in this way, because this pit is dug in the mountain, not naturally formed, then there should not be other space connected to it, as your Uncle Zhang said, in such an environment, the temperature under the pit will rise, and the rotting bacteria parasitic on the corpses can multiply, As the decay progresses, biogas is slowly formed, and biogas has a strong corrosive effect, which also accelerates the decay of the corpses below, now understand? ”

"It's still clear to you, if my Uncle Zhang also talked about biogas just now, I guess I won't have to trouble you."

"In a relatively closed environment, the temperature there is not enough to stop the bacteria from growing, and the corpses they decompose will be fermented by microorganisms, which will produce biogas at the same time, and the temperature will rise again, and the difference between the temperature below and the above will be more obvious."

"Then if this is the early period of the Western Han Dynasty, it has been more than 2,200 years now, and the decay has not been finished until now, how many corpses can there be! It's scary to think about! ”

"Your statement is true, but the decay process will still stop when it reaches a certain position in the upper layer, after all, with the rise of the decay position, the ambient temperature is no longer suitable for the growth of those bacteria, although it is said that freezing does not kill those bacteria, but such a temperature can already keep them in a dormant state, which also suspends the decay, so that the decay stops at a certain level, so there should be a corpse that is half decomposed below, and it can even be said that the corpse is soaked in the decay liquid."

"You guys, I can't see that."

It was better to say that it was better to say it than to say it, Chen Zhijun, who was about to turn around and leave, suddenly saw a blue-green flame rising from the pile of corpses under the pit, accompanied by a strong fishy smell, wafting in the air.

Archaeologists in several places also saw this phenomenon and quickly turned around and ran. Seeing this, Zhang Gong shouted to stop: "Don't run! This is a phosphorus fire, which will follow with the flow of air, stand still, and you will be fine for a while. ”

Sure enough, after a few minutes, the blue-green flame finally disappeared. Although the phosphorus fire is gone, the fire on the corpse has not disappeared, it is still burning.

Zhang Gong looked at the flames and said to Professor Chen, "Old Chen, it seems that this place is about to be burned out." ”

"Burn it, so that these unjust souls can get out of this hell as soon as possible."

Chen Zhijun couldn't smell the smell, put on a mask and asked: "Won't this biogas burn out after a while, how can you say that it is burned out?" ”

"Fool, in addition to the methane, all the oil and fat decomposed from the corpse float on it, and those can also be burned."

"Burn it out, what's the big deal?"

"Burning it will make it warm up here, right? It produces toxic gases, right? It's going to be a waste of oxygen here, right? Study hard! ”