Soon, we followed the narrow and winding path between the wall carvings and walked to the innermost part.

There is a courtyard hidden in it that is not very large, and there are indeed four or five staggered canals in the courtyard, which are built by man, leading the mountain spring down from the high ground, and finally converge in the pool in the center of the courtyard, and there is no change around, still surrounded by high grottoes, in which we seem to be in a large patio.

In the innermost wall, a door was opened, and this one was different from the one we had passed through earlier. It is not very hidden, and it is apparently the entrance to some kind of building, with an elaborate portico in front of the doorway, with a triangular roof above it and four gray-and-white columns in the ancient Roman style below.

One of the pillars had fallen down, and the remains of many pillars were scattered around it, which also caused the top of the triangle above to collapse slightly, tilting to the side, as if it was a dilapidated house that was about to fall down at any time.

Judging from the remains of the column, this column is not a whole stone column, but artificial concrete.

Yan Qiu was the first to notice this, she walked over and squatted down to carefully observe the fragments, and then for the first time since she came out of the wolf's den, she spoke to everyone, and said to everyone: "This pillar is concrete. ”

We didn't care, we felt that Yan Qiu was making a little fuss, such a magnificent building complex can be built, what is so strange about a concrete pillar?

Seeing that we didn't care, Yan Qiu emphasized again: "Look at this pillar, it is made of concrete. ”

I asked, "Is there a problem?" It's very good to make concrete pillars, do you want the whole stone carving? That is both labor-intensive and material-intensive, and concrete is the most reasonable. ”

Yan Qiu continued: "The earliest concrete technology discovered in China is also in recent years, and it is probably determined that it was used by humans 5,000 years ago, and it is the product of stone ash mixed with gravel and water. You look at the remains of this column, except for some ash slag, which I judge to be volcanic ash, and there are a lot of shells and bones in it, and some metal mixed in. This kind of concrete structure has never been seen before in the history of the world. According to the composition of it, if the appropriate ratio is used, the solidity of this concrete is definitely not inferior to that of our reinforced concrete today. ”

As soon as Yan Qiu explained this, we immediately felt the importance of her words, that is, the builders of the building complex we are in have mastered very advanced building materials technology, even beyond the contemporary.

Everyone's reaction is different, obviously from a different perspective, and my question is: "If there are shells in the concrete, then there is an ocean nearby?" Ancient craftsmen must have used local materials, and they would never have airlifted some shells to make concrete, right? ”

Yan Qiu replied: "It's not necessarily, it's certain that there is an ocean, but I don't know if it's the same age as the builder." ”

I didn't understand and asked, "Did the builders cross over?" Why do you make me a little confused? ”

Yan Qiu explained: "Generally, the topography is more complicated, it must be the seabed, due to the movement of the earth's crust, the plate gap rises due to extrusion, and the sea water flows to the lower ground, so that the biological remains on the seabed are left in place, but the ocean is gone." The ancients could mine shells from mountain rocks to obtain raw materials, and there are still many remains of marine life found in the Himalayas. ”

"So judging by your expertise, is this a wreck found directly from the sea, or a wreck found from the rocks, as you say?" I pressed on.

Yan Qiu replied: "I judge that it is the latter, according to the topography here, such a big change in the earth's crust was not formed overnight. Take the Himalayas, for example, it was formed 11 million years ago, and the whole process took about 40 million years, and such a large-scale crustal movement may also be at the same time as the Himalayas. The earliest discovered apes were only 4.4 million years old, and the intelligent Homo sapiens stage was only 200,000 years old at most. If there was an ocean here, it should still be there now, and it wouldn't have become a mountain so quickly. ”

This time I completely understood, Yan Qiu is really a good teacher, unless the Homo sapiens here are 11 million years ago, it must be impossible to take materials directly from the sea to use them. Intelligent humans appeared 200,000 years ago, which is negligible compared to ocean migration.

Therefore, the ancients here must have found the remains of shells from the rocks and used them as raw materials for concrete, in other words, perhaps they saw that the rocks with shells were harder, which inspired their methods of making concrete.

Fat Brother's question is different from mine, he thinks of the spread of technology, Fat Brother asked Yan Qiu: "According to what you said, this concrete manufacturing technology was very advanced in ancient times, so can you be sure which dynasty this is?" Why can't this technology be widely circulated? If it had spread earlier, would we have been able to live in skyscrapers as early as ancient times? ”

The fat brother's question stumped Yan Qiu, she said: "Which dynasty is it, according to the knowledge I have learned, it is really difficult to judge, there is no record of a huge building complex like this, and the architectural style is a collection of the strengths of many families, and there are traces of ancient buildings in many regions, but it is impossible to judge which country or even which region is at the bottom." ”

The fat brother smiled and said: "I know this, we are in Mongolia, that must be the ancestor of the Mongols, you are stupid to learn?" ”

"The ancestors of Mongolia must be nomadic people, there were many large-scale migrations of ancient humans, maybe this is left by the ancestors of other races, otherwise why don't the Mongolians themselves know about this place? Also nomadic in the steppe. Yan Qiu patiently explained.

We all agree with Yan Qiu's statement, about the professional knowledge of archaeology, we are only at the kindergarten level, and there is no basis for refutation, and she said it so plainly, we can all understand it, and there is really nothing to refute.

Su Rina said: "It doesn't matter what period and who built it, it doesn't matter to us, the key is its function, what is the purpose of the building here?" These wall carvings are also too exaggerated, why are they all those contents? After speaking, his face turned red with shame, and he lowered his head and held back a smile.

I immediately seized the opportunity to tease Su Rina and said, "Yo, this eldest sister, when you were also shy? I don't remember the first time we met, how did you tease Ben-sama? ”

Su Rina immediately retorted with righteous words: "You pressed me into the car at the beginning, blame me?" ”

I immediately asked again, "What about the time in the car in front of Uncle Garu's house?" ”

As soon as I finished asking, we both burst out laughing, I really couldn't hold back, and the pictures around us really made people unable to face them calmly.

Yan Qiu immediately expressed her dissatisfaction with our flirtatious dialogue, and after slanting at me, she said: "This is called sex worship, it can also be said to be fertility worship, there is a similar history in ancient India and Rome, and the relief on the wall here shows that this is a sex temple, which is exactly the same as the Kashulaho sex temple group in India, which contains many discourses from man to god, from the human body to the universe, and you will not be able to explain it clearly for a while, the only thing I don't understand is the architectural style, which is completely different from ancient India, The appearance of those little people is also different, older and more abstract. ”

Jiang Rou was impatient when she heard this, and urged, "Shall we go inside and have a look?" There's no other way to go, either turn back or go in, what's there to discuss at the door? To see is to believe. ”

I kept my head down and didn't dare to look at Jiang Li, and immediately agreed with my sister's suggestion, and said to us: "Yes, yes, hurry up and go in and have a look, I don't want to stay in this strange courtyard anymore." ”

Since I came, I must go in to see and then go, I can't turn around at the door and turn back, but the collapse of the porch makes me a little scared, for fear that there will be potential safety hazards after everyone enters the dangerous house, but I want to come here and it has not collapsed for a day or two, and it is estimated that it has long been stable, so I am not very worried.

I was the first to step inside, and everyone followed me closely, stepping over the ruins of the building on the ground and stumbling into the doorway.

Inside the doorway is a dark space, and since the outside is a patio structure, there is almost no light coming in. On the walls on both sides of the entrance, there is a torch with a wooden base and a metal bowl at the top.

Jiang Rou lit a torch with a lighter.

You can see clearly that there are still many pictures of ecstasy carved around the torch and wooden handle, and the zuò is also very fine, the inside is hollow, and it is used for burning a kind of grease, and when ignited, it emits an indescribable strange smell, and it will make people sick when inhaling hard, and we all try not to smell it. R1058