However, Liu Yuan didn't show too much surprise, nodded and smiled: "I already knew." ”

No. 7 returned to his seat, smiling and responding, but his heart was already flooded with turbulent waves, the young man in front of him was by no means simple, and he also remembered what the master had said to him a month ago: This is a bureau, and the establishment of the entire bureau is only for one person. Now that I think about it, the person the master is talking about should be the young man named Liu Yuan in front of him.

"Don't worry, these people will not pose a threat to you, you are the tomb of today, I only follow your orders." With that, Seven threw the black object that had just been separated from the iron lump in his hand onto the table.

"Uncle Zhang, take it." Liu Yuan was not polite, and directly threw this thing to Zhang Erhe.

"Isn't this still iron?" Zhang Erhe picked up this black object that was exactly the same as the iron bump, looked at it for a long time, and was stunned that he didn't see anything.

"Uncle Zhang, you're still too tender, you shine this thing under the beam, and you'll know." Liu Yuan didn't have the heart to explain, and it had been nearly an hour after the meal.

After eating and drinking, they almost had a good night's sleep, but not today, they still have an important operation, go to the underground mine, and explore the mysterious pit.

Lushan Town is only more than half an hour away from Big Cat Mountain, and when they arrived, it was nearly ten o'clock, but Li Ru was not here at this time, Liu Yuan didn't care too much, and No. 7 took some things needed for mining with ease, a total of three sets, long rubber shoes must be brought, three black hard cloth shirts, and three helmets, each of which is equipped with mining lamps.

"Take off your coats and put this on." He handed over the shirt and put it on after a while.

"Yuan'er, I used to want to be a coal digger in our place, hehe, now I can still have this opportunity." Zhang Erhe and Liu Yuan, you look at me, I look at you, this outfit is really interesting.

"Pull it down, you, with your body, the coal cart can't be pushed, it's embarrassing to say." Liu Yuan said disdainfully, but to say that Zhang Erhe's body is too poor, that's a bad word, take off your clothes, it's still quite burly.

Zhang Erhe showed off beautifully, turned his head and asked, "Where is the hanging well here, let's go down now." ”

"There's no hanging shaft here, it's a walking mine, and it's going to go down." Seven explained.

Walking shaft is a kind of mine, generally in the northern mine, because the coal source reserve is deeper, mostly straight up and down, the need for a crane tower to send personnel into, but the big cat mountain coal mine is not the case, because the mountain is special, the coal source here is shallow, and the mountain stone is harder, and the well is not as convenient as digging a tunnel directly, plus the coal in the north is dry, the gas is higher, and here because of the mountain, the underground is more humid, so the gas is low, and it is not easy to explode, so the walking shaft is much safer than the hanging shaft, However, they all have one thing in common, they are deep underground and most afraid of collapsing.

"Let's go." The three of them finished tidying up, except for this clothes, the rest of the things, none of them brought, walked forward a few hundred meters, and saw a place with lights, and there, the guards were even stricter, in addition to the guards, there were two people dressed like them, and the seven stepped forward and said, the two people would understand, and the five of them walked in from the bright place together.

As soon as they entered the tunnel, a cool breeze hit, Liu Yuan and the two couldn't help but shiver, and the tunnel was at a thirty-degree angle, diagonally downward, although there was a light source in the middle, but there was still a feeling of an abyssal giant mouth, and as the wind came out, a faint smell of coal rushed out, mixed with a smell of sulfur, which smelled a little disgusting.

"Tut-tut, this mine is indeed different from the north." And the conveyor belt in the middle of the tunnel is also in a state of stopping work at this time, otherwise they can slip down from the conveyor belt and do not have to spend their physical strength here.

"The inside has been cut off, and the conveyor belt is unusable." No. 7 sensed the thoughts of the two and explained, this kind of rhetoric made Zhang Erhe very unhappy, but there was no way, after all, this place was deep underground, and it was inevitable that something would happen.

The further you go in, the more humid the air becomes, in addition to the air, the stone steps under your feet also ooze water slightly, and the smell of sulfur is relatively strong, only four or five hundred meters away, there is a huge wooden stake supporting the cave wall, and there is a slight presence of coal here.

Speechless for a while, Liu Yuan looked around from time to time, and a cool breeze blew out, and the sound of the machine could be faintly heard here.

"What is this?" Liu Yuan couldn't help frowning and asked, the entire production line here should be suspended, but the sound made by this kind of machine is real.

"There's a dark river down there, and the pumps run 24 hours a day, otherwise the whole mine will be flooded." Seven said lightly, seemingly familiar with the situation in the mine.

Not far away, is a small open place, and this should be the transfer station under the coal mine, here along the wall, four or five arm-thick water pipes straight into the wall, unified to the right, the water below, should be pumped out from here, but after here, the road becomes a little narrow, the side of the conveyor belt can only allow one person to pass, the seventh in front, Liu Yuan and the two are sandwiched in the middle-aged, as for the two people who came together, they follow closely, and from time to time there will be a huge rock to block the way, I had to bend over and climb over, and on the ground here, there were no stone steps, all of them were paved with water slime, and it was quite difficult to step on them.

It's been a kilometer of downhill intermittently, and the light source in the tunnel has disappeared here.

"Turn on the miner's lamp on your hat." As the seventh said, he pressed the switch of the miner's lamp, and turned back to turn on the miner's lamp for Liu Yuan and the others, as for the last two, they had already pressed the switch.

"Seven, how long will this light be on?" Zhang Erhe asked curiously, the miner's lamp has strong light concentration, and the large battery pinned to the waist is about the same size as a battery of an electric car, but underground, this kind of lamp needs to be turned on all the time.

"Under normal circumstances, it's no problem for a day, but these are all used by miners before, and I haven't studied how long they can be used, but it should still be okay overnight."

Zhang Erhe had a bottom in his heart, as for Liu Yuan, he couldn't see his expression, he touched the stone wall twice from time to time, put it between his nose and smelled it, but he didn't speak, and the sound of the machine in the distance was somewhat disturbing.

"Seven, have you studied this place?" Liu Yuan suddenly asked this sentence, but the seventh in front of him stopped at the moment, grabbed a handful of slime on the ground, looked at it, and said: "I have always been very strange, it is true that the coal here belongs to high-sulfur coal, but the metal content in the coal dust is also quite high, didn't anyone find it here before?" ”

Liu Yuan's brows were tightly locked, the lights were dim, and he couldn't see his expression, and said, "These metals are not from coal, they have something to do with the water here." ”

After a pause, Liu Yuan continued: "Tell me about your findings first." When he was on the ground before, Li Ru said that there was another Professor Gao studying here under the mine, but seeing that they had been walking for so long, they still couldn't see the end, and Liu Yuan already had some ideas.

"You're right, it's indeed something in the water, there's an underground river down here, and the underground pit found is on the edge of the dark river, through the analysis of the patterns and words on it, it can indeed be seen that it's a tomb, but I'm curious, how did you know about the tomb tonight?"

Liu Yuan chuckled, did not answer, and continued: "In addition to the potholes, did you find something?" ”

This time, No. 7 replied simply: "If it is just a tomb, how can there be such a big formation?" ”

The two looked at each other and smiled, no longer speaking, but Zhang Erhe was not happy, and said dissatisfiedly: "Yuan'er, you and I are partners, this guy is Cheng Biting Jin who killed halfway, you discuss with him that there is a fart, why don't you ask me what's the matter?" Zhang Erhe's words were full of vinegar, which made No. 7 and Liu Yuan laugh.

"Uncle Zhang, you can pull it down, discuss it with you, I might as well find a pig to make love, eh, by the way, you can put away the meteorite we got, and the fare back is all about it."

Regarding the matter of the tomb head that No. 7 and Liu Yuan talked about today, Liu Yuan only mentioned it to Zhang Erhe, but Zhang Erhe also understood that it was indeed difficult for him to intervene in this kind of thing, and the choice of the tomb head was particularly important for the excavation of this rare tomb, and the reason why Liu Yuan discussed with No. 7 was that the biggest factor was on this tomb.