Everyone looked at the black fog in front of them, and they were a little stunned, although the black fog was not thick, just a very light layer, but no one could say why.

I let the wooden flute blow a fire fold and threw it in, but unexpectedly after the fire fold fell to the ground, the flame burned quite vigorously, and there was no intention of extinguishing it at all, and the oxygen content was no problem.

"Let's let this fire burn for a while, let's see what's in the tomb on both sides, even if it's a burial pit, maybe there will be a harvest inside." I'm not done yet.

"Bang!"

The fat man kicked open the black tomb door on the left, I didn't pay attention to him, and when I heard this sound, I was also startled, and when I turned around, I found that the tomb door was actually wooden.

Did I really guess it, this tomb door should not be peach, thinking so in my heart, I also walked over, picked up a wooden board that was kicked by the fat man and looked at it, and found that it was actually quite heavy, it was definitely not peachwood, and the density of peach wood was not so large.

Looking along the grain of the wood, I was shocked into a cold sweat......

This feeling,It's a bit of a plywood meaning.,When this idea appeared in my head,I didn't know how to explain it.,It's too bizarre.,Plywood is a thing like an ancient tomb that can't be hit.。

Seeing that there was something wrong with my face, Yan Jing and the others had already come over, I showed them the section of the wooden board in my hand, and saw that Yan Jing, a doctor of archaeology, also began to frown.

Plywood belongs to plywood, to put it simply, it is to put three layers of thin point template, according to different texture directions, directly glued together, this thing was invented in the eighteenth century, when the original purpose, for the purpose of building airplanes, used for light weight, and this plywood until the nineteenth century, did not appear in the country, at that time was also to make some clock boxes and handicrafts and the like.

After all, I am absolutely right about the construction of houses in college, this thing is plywood, because of the high structural strength, the stability is also good, and the construction is very good to do edge banding, so now it is very widely used.

The disadvantage is that formaldehyde adhesives will be used in production, and now furniture made of plywood will release formaldehyde, especially the kind of newly renovated house, in fact, formaldehyde on the wall is only one aspect, and the furniture is the big head.

"Could it be that the ancients at that time had already mastered this technique?" I looked at the wooden planks that had been coated with a layer of black paint on the inside of my hands, and I was a little afraid to accept the reality.

"Is it possible that it was just three different pieces of wood glued together, just a coincidence?" Yan Jing was also reluctant to accept this matter, so she could only speculate on the process from the objective facts and follow the results.

I didn't answer, so I aimed the light of the flashlight at the broken position of the template in my hand, looked at it carefully, and then I shook my head very certainly: "It can't be a coincidence, this kind of plywood must be produced with the help of modern technology, and it is definitely not something that a carpenter can do with his bare hands. The most important point is that it must be subjected to thermohigh pressure! In ancient times, without steam machinery, it was impossible to press it out, and then it had to be cooled, cut off, sanded, and tested for layering, before it was completed. ”

The fat man was in high spirits, but he never expected him to kick something out, and seeing that these people behind us didn't follow him, he immediately ran out of the tomb and said: "I said what are you doing here, the door has been kicked open by the fat man, hurry in." ”

Naturally, no one pays attention to him now, and if any of us among these people have not changed their faces after listening to me finish the production process of plywood, only the fat man and Cao Bingyin will remain.

The fat man ran in just now and didn't hear it, but Cao Bingyin still looked calm.

"This tomb, someone has been here......"

Cao Bingyin finally held back a sentence, and we were not calm at once, especially the fat man's reaction was the greatest, looking at the board in my hand, and then at Cao Bingyin, he wondered: "What has anyone been here?" How is it possible, when we came in just now, wasn't the bronze gate closed, and besides, if the door had been opened, there was no reason why we would have left those gold and silver treasures behind. ”

"Then why don't you take it? Aren't the treasures of gold and silver still there? I frowned, pondering, and asked casually.

"Fat man, don't I please don't move your fifth brother, otherwise it would be better to let the helicopter pull it away." The fat man pouted, and said a little unhappily.

Cao Bingyin, that foreign force, this plywood in my hand......

Thinking of what Cao Bingyin said just now, these elements began to be connected together in my brain rapidly, I didn't ask Cao Bingyin why he followed us, I don't believe he was because he saw the fat man, so he followed, it is very likely that from the very beginning, he came with us all the way, maybe he himself couldn't have imagined that the fat man suddenly appeared.

But another point is that Cao Bingyin has known me for a long time, and no one of us introduced me like him, including the fat man, but he knows that I am from the Mao family, which really makes me a little uncomfortable, as if I am standing in front of Cao Bingyin without anything, and he himself, I don't know anything.

Now that I think about it, it's very likely that Cao Bingyin also knew about the Yankees that we killed.

With these doubts, I looked at Cao Bingyin, opened my mouth and wanted to ask him, but I didn't know where to start, but Cao Bingyin shook his head at me and said: "You will know what you should know, let's go and have a look first, in fact, if you don't come, I will also enter this tomb." ”

"Have you been in before?" I have a lot of questions in my head, so I'll pick one of the more critical ones.

I saw Cao Bingyan shake his head and said, "No, it's been a century since the last time I came here." ”

A century? It was at the end of the twentieth century, at the beginning of the nineteenth century, when I recalled what I had learned in my textbooks, and it seemed to be the time of the first world war.

From a historical point of view, children who grew up in China should be more familiar with World War II, because China directly participated in that war, and in World War I, the battlefields were all in Europe and Africa, but at that time, Japan got Qingdao in the hands of the Beiyang government.

It is hard to imagine what the purpose of the people who entered this tomb in such a turbulent era......

(End of chapter)