Lin Changsheng, Qiu Yihan, and Uncle Dog continued to clean up the stone bricks in the blast pit at the main gate, and when they dug to a depth of two meters, nothing gushed out from this side.

They continued to dig, digging deeper in the direction of the door, but nothing unusual was seen.

"Looks like it's safe here."

At this point, Lin Changsheng came to a conclusion and said, "Open the main door!" ”

The three of them climbed up, but for the sake of safety, Lin Changsheng still let Ye Lin and the others stand back for dozens of meters, and then he pressed the mechanism on the main entrance.

With a 'click', the bronze door burst open.

Chen Xue stood behind and sweated for Lin Changsheng, for fear that some mechanism would be triggered.

Luckily, there weren't any mechanisms.

I saw that the ever-bright lamps on the lampposts in the main hall were automatically lit one after another, and soon, the whole hall was like daylight.

Chen Xue said: "This hall was sealed before. ”

From this scene, it can be judged that before the bronze door was opened, there was no oxygen in the hall, and after the door was opened, oxygen entered the hall, and the oil of the ever-bright lamp burned when it met oxygen.

Lin Changsheng opened his mouth and said, "Come in later, let the air circulate for a while." ”

Who knows if there are any vents in there, and if the bronze door will close after everyone enters.

If it is turned off, the oxygen inside will gradually decrease, and the burning of the ever-bright lamp consumes oxygen, and it will not be long before they suffocate to death.

The crowd didn't rush in, they stood outside the door and looked in the direction of the side door, and then their faces changed slightly.

They couldn't see anything behind the side door, there was only a wall in front of them.

Lin Changsheng compared the position of the side door outside the hall, and the door frame on the side of the side door was exactly the position of the wall he saw.

"Mercury is supposed to be hidden in the wall, and as soon as we open that door, it will gush out."

Lin Changsheng opened his mouth and looked ahead, this wall didn't know how long it was, that is...... I don't know how much mercury is in the wall!

"Let's rest first, I can't go in now."

The air circulation in a short period of time is not up to standard, and it is a good opportunity to rest.

Everyone immediately conveniently took advantage of it, ate and drank, and rested.

After sleeping for a while, Lin Changsheng felt that it was almost over, so he walked into the main hall, and Ye Lin and the others followed.

After entering the main hall, Lin Changsheng walked to the wall behind the side door and knocked lightly, and there was a sound of air.

Qiu Yihan said: "It seems that Hou Ye's inference is correct, fortunately, we are not stupid enough to do multiple-choice questions, otherwise if we choose the wrong one, we will be in trouble." ”

Although there were explosives in ancient times, they were not very powerful, and it was difficult to control the dose of the explosion, so this psychological bureau could only try luck for the ancients, but for Lin Changsheng and them, they didn't need it.

Lin Changsheng chuckled and said, "In this psychological bureau, we should be grateful for the power of science and technology. ”

Although modern people have a lot of ancient cultural faults, correspondingly, they also have higher technology, although technology can't make up for all cultural faults, but there are some things that can still be made up.

Ye Lin glanced at the hall and said, "This is just an outer hall, right?" ”

Inside the hall, two five-meter-thick copper pillars support the entire hall, and there are countless dense lampposts, and oil paintings are painted on the walls, but nothing else.

"Let's go."

Everyone has already seen a lot of similar decorations in the main hall, so naturally they will not continue to waste time here.

After about fifty meters, there was a loud bang behind him, and the bronze door slammed shut.

"Before we find a ventilated place, everyone picks up their pace, and if they can, don't talk."

Lin Changsheng instructed and sped up.

The main hall is straight, walked about 600 meters, there is no road in front, there is a stone gate five meters high, three meters wide blocking the road.

Ye Lin glanced around, didn't see any other exits, and said, "This is the exit of the outer hall, is there an opening mechanism?" ”

Lin Changsheng glanced at it a few times, shook his head and said, "No, this is the Broken Dragon Stone, it can only be exploded, otherwise it will take a long time, and we will all have to suffocate here." ”

Due to the previous consideration of air circulation, Lin Changsheng did not dare to enter the main hall rashly, and he did not know how big this hall was.

Now, although the main hall is not small, but there are a lot of permanent lights, after the bronze door is closed, the air here is no longer circulating, according to the number of permanent lights, it is estimated that in less than three hours, the oxygen here will disappear.

Lin Changsheng continued: "I have seen it just now, the bronze door does not have an opening mechanism in the hall, that is to say, after the oxygen is gone, if you want to survive, you must blow up the bronze door, anyway, it is all fried, it is not as affordable as blowing up the stone door." ”

The archaeological value of the stone gate is almost negligible compared to that of the bronze gate.

"Fried!"

Ye Lin readily agreed this time.

While looking at the situation in the hall around the stone gate, he adjusted the dosage of the explosive pack, he had to accurately calculate the power of the explosive explosion, otherwise, ...... At least the murals around the stone gate were greatly destroyed, and the main hall collapsed, and all the staff were stoned to death.

After about an hour, Ye Lin finished it, he looked at Lin Changsheng and said, "After using up the explosives package this time, we only have one amount left." ”

I used too many explosive packs to deal with millipede centipedes before.

"Hmm."

Lin Changsheng nodded and didn't say much.

No matter how much is left, you have to solve the problem in front of you first, right?

"Twenty meters away."

Ye Lin shouted, then put down the explosive bag, followed the lead and retreated to a safe distance, and then ignited the lead with a lighter.

The fizzling sound of the fuse hissing is heard, detonating the explosive pack.

"Boom ......"

Explosions were heard, rubble splattered, and the ground trembled.

When the smoke cleared, Lin Changsheng looked ahead, and an irregular, one-square-sized triangle was blown out in the lower left corner of the stone gate.

The murals on the left and right sides of the stone gate were polluted by gunsmoke for a few meters, but this is harmless, and it will be easy to restore it in the future.

A yin wind blew out from the gap in the stone gate, and the wind blew on the faces of Lin Changsheng and the others, although it was cold and biting, everyone smiled.

With wind, there is ventilation, and they don't have to worry about oxygen.

"Let's go."

After Lin Changsheng finished speaking, everyone walked forward.

Qiu Yihan took the lead in getting out of the hole in the lower left corner, and said loudly: "I'll go, the disparity outside here is too big, right?" ”

Lin Changsheng and the others were stunned for a moment, and immediately got in.

When they saw the scene outside, they were all stunned for a moment.

In front of it is a passage, the length of which is unknown, about five meters wide, and the stone walls inside the passage are natural without any traces of excavation.

Even if the ground is natural, and there are not even stone bricks, it is no wonder that Qiu Yihan said that the disparity between the inside and outside is too great.