Chapter 302: Iron Turtle

The length of the robbery hole is nearly 20 meters. This is the result of Lao Bai's four or five hours of work. Whether in terms of shape, tilt angle, size, etc., it is very suitable.

I crawled all the way through the robbery hole and soon reached the end.

The robbery hole is not a tunnel. It can only accommodate one person. Drilling in the robbery hole to look at the wooden door is actually like looking at a leopard through a tube. Of course, it can also be said to be sitting in a well and looking at the sky. In short, it is almost the same. Only a small part of the tomb door can be seen.

Brother Yaozi and Lao Bai had come in before, and they had already cleaned the mud on the tomb door. At this moment, the texture of the tomb door is clear at a glance.

At first glance, it looks like stone, but it is not stone.

The tomb door is black, and the color is somewhat similar to obsidian. It feels cold to the touch. For a while, I was also a little surprised and doubtful.

In fact, in most tombs, although the tomb door is the most important part, compared with the body preservation technology of the tomb owner and those crazy killing devices, its craftsmanship is not complicated. If you want to make it strong enough to make the tomb robbers despair, it is nothing more than starting from the weight and materials.

The thickness of Emperor Wu of Liang's tomb door reached an astonishing ten tons. It was made of pure iron. The whole door was a big iron lump. This was regarded as the weight was brought to the fullest. The door was really amazing. Many tomb robbers were blocked because the crowbar could not open the gap at all, and the jack could not be inserted.

My intuition told me that this was not a door that was used to suppress people by weight.

I put my ear to the door and tapped it gently with my hand a few times. The sound was clear, which was as I expected. This door was indeed not thick, otherwise it would make a very heavy sound when tapped, even like a mud cow entering the sea. You can't hear any sound inside at all, but the sound of slapping on the outer skin is like applause.

Since this door is not heavy enough, the only possibility is that it is made of special materials.

I can remember several materials like this one, which are dark and smooth, like stone but not stone, and not like metal. They are all very rare and precious. I have never seen the real thing, but there are many related texts.

Just as I was hesitating, there was a rustling sound behind me. Lao Bai, who was waiting outside impatiently, had already come in and asked, "Xiao Weizi, how is it, have you made any progress?"

"Before waking me up, you and Brother Yaozi should have made some attempts, right?"

I asked, "We encountered several tomb doors that were made very badly before, which made Brother Yaozi very annoyed. If I remember correctly, Brother Yaozi seemed to have brought a small handheld cutting machine this time? Have you used that thing?"

"Why haven't you used it?"

Lao Bai said, "The saw blade is broken!"

The saw blade is broken?

I was a little surprised.

Brother Yaozi has a bit of a talent for technology and machinery. He even joked with us that if he hadn't encountered that drastic change when he was a child, he might have become a worker. However, he did not lose his talent in this industry. Most of the tools we carried with us were modified by him.

Brother Yaozi bought the small handheld cutting machine early. In the few days before leaving Zhenwu Temple, he was tinkering with it almost day and night. He made it into a storage type, and the power was terrifying. I don't know how he operated it specifically. Anyway, after the thing was made, it was fierce and sawed the stone with a click, but it ran out of power after a few times.

I roughly know what Brother Yaozi was thinking when he took out that thing. He should want to cut a hole in the tomb door so that we can get in. If he said that his battery couldn't hold it and ran out of power, I would believe it, but if he said that the saw blade broke, it would be a bit scary.

The saw blade of the handheld cutter is made of diamond. Anyone who has been to school knows that diamond is probably the hardest thing in the world.

If the diamond can be broken, it means that the strength of this door is probably greater than diamond!!

I carefully felt around on the door again. Brother Yaozi fiddled with it for a long time. The saw blade broke, but there was no trace left on the door!

Among the materials I know, there is only one with such high strength.

"I see, this is black steel!"

I sighed softly: "This door is not thick, at most only a dozen centimeters, but with the few tools in our hands, we can't break it at all, we need modern large-scale equipment!"

"Black steel?"

Lao Bai was stunned. I saw that he seemed to know this kind of thing, and then Lao Bai shook his head fiercely: "What kind of mythical beast is this?"

"A mineral that appears with volcanic eruptions."

I thought about it and said: "The scientific name should be wurtzite boron nitride. It is said that the structure is very similar to diamond, but diamond is formed by carbon under high pressure, while this thing is formed under high temperature and high pressure during volcanic eruptions. The hardness is 18% higher than diamond."

After a pause, I added.

The raw material of the black steel I am talking about is this wurtzite boron nitride, but it has been processed by some special processes. The specific process has long been lost. I only know that this thing was short-lived in the Western Han Dynasty.

In the sixth year of Yuanding, Emperor Wu of Han sent General Lu Bode and General Yang Pu of Louchuan to quell the rebellion in Nanyue. The army marched into Zhuya County, which is now Haikou, Hainan Island. At that time, Hainan Island was still a barren land with only a few native tribes. After the Han army entered, many native tribes, in order to protect themselves, presented treasures to the emperor of the Han Dynasty through Lu Bode. One of the tribes presented a black stone sword.

Lu Bode saw that the object was uneven and ugly, similar to the firewood stick of a country woman. He was furious and wanted to punish the native tribe for deceiving the emperor. Seeing this, the envoy broke free from the guard and suddenly pulled out the Han sword from the guard's waist. Lu Bode thought that the other party was going to assassinate him, so he drew his sword and stood up. Who knew that the envoy chopped the tribute with a sword. After a crisp sound, the sword in his hand broke directly, and the black stone sword was not damaged at all! !

Lu Bode was shocked and asked questions. The native messenger said that this was made of materials brought out by the volcanic eruption. The locals believed that the volcano was the god's furnace for refining weapons. These things were naturally the scraps of the artifacts. Then they were added with a special local paint and extracted and cast. They called it black steel.

At that time, Emperor Wu of Han and the Huns were fighting fiercely. Lu Bode knew the value of this thing as soon as he saw it. Unfortunately, he learned after repeated inquiries that the raw materials of this black steel were very rare and could not be equipped on a large scale by the Han army. Although he was disappointed, he looked at this black stone sword again and no longer felt it was ugly. Instead, he felt that the uneven appearance looked particularly ferocious, so he named it Dragon Tooth and presented it to Emperor Wu of Han.

It is said that Emperor Wu of Han once used the Chixiao Sword used by Emperor Gaozu to kill the white snake and this Dragon Tooth Sword to fight each other, and they were evenly matched.

After Emperor Wu died, both swords were buried with him in Maoling.

However, when the Five Barbarians fled south, a large number of craftsmen died, and the formula of that paint disappeared, so black steel could not be made.

"Tell me, as the strongest thing in the world, can we break this door without some large modern equipment?"

I couldn't help but say: "From the clues we have come into contact with before, it can be seen that the mysterious ancient country sung in the mermaid song is actually very advanced in metallurgy. This place also has black steel that has long been lost in the Central Plains Dynasty. It seems that this tomb is indeed the sleeping place of a great man in that mysterious ancient country."

"Is this road blocked?"

Lao Bai said: "No, let's retreat and dig a tunnel?"

"It's useless!"

I shook my head: "I told you a long time ago that the walls and roof structure of the Suntou Tomb must be so strong that it is outrageous. Now there is an answer. If nothing unexpected happens, the entire tomb structure is made of this black steel, just like a tin turtle. We can't break this place, and there is no door anywhere else. Look, such a large thing as the tomb door is made of black steel, and this door is a secret passage for craftsmen to escape. This is enough to show that this ancient country is not short of such things, and it has even been widely popularized. It also shows that there may be many volcanic people where they live..."

"So there is no solution now?"

Lao Bai scratched his head anxiously: "If the craftsmen made a dead door after leaving, then we can't get in?"

"There is no such thing as a dead door in this world, just like a dead knot, it depends on whether your hands are skillful enough."

I sneered and didn't respond to Lao Bai's words. I asked him to hand me the engineer shovel. I looked around the tunnel and then started digging from the left side close to the tomb door.

"What are you going to do?"

Lao Bai was stunned by this. Without my answer, he quickly reacted: "Are you going to dig out the entire tomb door? Do you think there is a mechanism on the door?"

I really want to dig out the entire tomb door. What I see now is only a small part. As for the mechanism, I didn't think about it at all. This road is the way for craftsmen to make a living. After the craftsmen come out, there is no need to leave a trap door. Lao Bai is right. This door is most likely a dead door, but how can I start without seeing the whole picture? I have only determined the texture of this door now, and I don't know anything else. I don't even know whether this door is a push-pull type or a floor gate. It's too extravagant to talk about cracking it.

After all, this is about my own life. Even if this tomb is a tin turtle, I have to chew a hole in it and get in. If a ceremonial officer can't even get through the door, wouldn't it be a joke?

While digging the soil with a shovel, I gently stroked the door with my hands.

As a result, I dug more than two meters horizontally, but I didn't touch the edge of the door.

"Such a big door?"

Even Lao Bai was shocked and couldn't help saying, "Is this really a small door for craftsmen to go through?"

I didn't say anything and dug more than one meter. At this time, my fingers touched a crack on the door, a very small crack, so small that if my hands were not trained since childhood, I couldn't feel it at all!

However, the crack was straight, with obvious traces of human beings!

"What kind of tomb door is this? I've never heard of it!"

I was amazed in my heart, turned my head and said to Lao Bai who was carrying soil: "Let's retreat first, let someone else come, it seems that we have to spend some time on this door, we have to dig up all the soil near the tomb door, expose the whole door, maybe I can find out something.

Lao Bai responded, twisted his body, and was about to retreat, but somehow, the whole person froze.

I was still gently stroking the tiny gap, trying to dig out some similar cases from my mind, and didn't notice that Lao Bai's face was pale, until he gently pushed me, I turned my head to look at him.

"Little Weizi..."

Lao Bai's lips trembled, and he said tremblingly: "You... seem to have collapsed..."

Collapsed?

How is this possible?

I dare not say anything else, can I collapse a tunnel dug?

I saw Lao Bai looking at the wall of the tomb hole with his eyes tilted, so I tilted my head to take a look, and was stunned for a moment. I saw that the moist black soil the size of a fingernail was rolling down the wall of the tomb hole in pieces. This clearly showed that the structure was unstable and was about to collapse.

In an instant, I understood that it was not because of my poor skills, but because there was a tomb door here. The soil that poured down during the landslide was relatively loose here. I kept digging the soil close to the tomb door, but it collapsed! ! !

I opened my mouth, but before I could say the word "retreat", the tomb cave collapsed with a "bang", filling my mouth with water, and directly buried me and Lao Bai alive! ! !