The three people in the car were all silent, Instructor Liu was concentrating on driving his car, while Chen Ziyang stared intently at the desert illuminated by the headlights of the vehicle.

The multi-purpose off-road vehicle drove along the canal, probably because of Chen Ziyang's cautious expression, which made Instructor Liu a little impatient, this time the vehicle was much faster than before, anyway, this is a relatively flat area in the desert, and there is no need to worry about obstacles suddenly appearing. Under the dipped beams, all but the strange canal was yellow sand.

After the vehicle drove for a while, Instructor Liu turned his head to Chen Ziyang and asked, "What did you think of?" As soon as his words fell, Chen Ziyang's eyes widened suddenly, and he opened his mouth and shouted, "Stop!" ”

Just as Instructor Liu turned his head to speak, a huge black shadow suddenly appeared in front of the vehicle. But at this time, Instructor Liu was turning his head to talk to Chen Ziyang, he didn't see the situation in front of the vehicle at all, but Chen Ziyang, who had been carefully staring at the road in front of him, saw this scene, so he hurriedly reminded loudly.

Although Instructor Liu didn't know what was going on, after hearing Chen Ziyang's loud shout, he instinctively stepped on the brakes. The utility vehicle slid forward for some distance before coming to a slam to a stop. Because the car stopped too suddenly, the team doctor sitting in the back of the car was caught off guard, her body suddenly leaned forward, and the team doctor's head hit the back of the front seat.

Instructor Liu, who stopped the car, looked at the large black shadow in front of the car and also had palpitations, and he couldn't imagine that he had only turned his head for a few seconds, and such a big thing had happened. But the shock was shock, and the three people in the car immediately got out of the car.

The three of them came to the front of the vehicle and stared at the black shadow in front of the vehicle, which turned out to be a deep pit that was not too large. This pit is about a circle, with a diameter of five or six meters, and it is pitch black in the pit, and it is impossible to see how deep it is.

The front wheels of the vehicle were almost pressed against the edge of the pit, if Chen Ziyang's reminder was a little later, or Instructor Liu's reaction was a little slower, it was very likely that the car would have fallen directly into this big pit.

Turning on the flashlight, Chen Ziyang shone towards the bottom of the deep pit, which is an inverted cone, and the lower it goes, the smaller the cross-sectional area of the deep pit. The sides of the entire pit are all yellow sand, very smooth, it seems that the sand on the side wall of the pit is very tightly combined, and there is not even a scratch on the entire side.

At this time, while rubbing the big bag that came out of his head, the team doctor who leaned down and looked down said to the two people: "Look, there seems to be something under the pit. ”

Under the illumination of the flashlight, the three people saw that the pit was not too deep, about forty or fifty meters deep, and at the bottom of the pit was still yellow sand, but in the middle of the bottom of the pit, there seemed to be a raised thing, but because it was far away, it was impossible to see what this thing was.

Handing the flashlight into Instructor Liu's hand, Chen Ziyang pressed it a few times on the edge of the pit. The feel of the side wall of the deep pit is basically the same as the feel of the side wall of the previous pool, and the sand here is also like the sand of the side wall of the canal, which has been completely solidified in one place, and it looks like cement when pressed, Chen Ziyang judged from the feel that the thickness of the sand condensed on the side wall of this pit should be thicker than the thickness of the sand condensed on the side wall of the pool.

The three of them studied here for a long time but didn't come up with a reason, and it seems that if they want to find out, they must go down to the bottom of this deep pit. However, because they do not have the conditions to go down to the deep pit now, Instructor Liu feels that today's exploration mission is over, and the three of them will return the same way, and let the entire convoy come here the next day to find out.

Chen Ziyang had guessed before that it was very likely that the hint given by the blood-colored diamond this time was still a deep well, just like the deep well that Lao Lu had seen in the ancient tomb before, and he knew that this should be the last hint given by the diamond, and it was very likely that the bottom of this pit was the location of the ancient kingdom of Sumi.

When the three of them were about to return, Chen Ziyang saw that the location of the pit was not too far from the camp of the convoy, and standing on the edge of the pit, he could vaguely see the sporadic lights of the convoy in the distance. It seems that Instructor Liu's stargazing skills still have a certain degree of attainment, and he only deviates by more than a kilometer when choosing an excavation site in such a large area.

On the way back, Chen Ziyang kept thinking about the deep pit, but Instructor Liu, who was sitting next to him and driving, was excited. More than ten years of hard work is finally about to pay off, and he can't help but be excited.

After returning to the carriage, Yang Lei was still lying there asleep, but Chen Ziyang knew that he couldn't sleep that night, so he spent the rest of his time carefully observing the sheepskin, hoping to get some more clues to find some hints for tomorrow's action.

From time to time, miscellaneous voices came from the camp outside the carriage, and Chen Ziyang knew that it was Instructor Liu arranging personnel and materials overnight to prepare for the next day's operation. On this night, except for Yang Lei, almost no one in the convoy slept well.

Instructor Liu, who had been happy all night, received bad news early the next morning, two people who had suffered from pulmonary edema because of drinking car antifreeze, had already whined together because of the lack of necessary treatment conditions and medical equipment. Now there are only twenty-one people left in the entire convoy, and one person has lost his sight because he drank glass water and antifreeze.

But no matter how great the difficulties were now, it could not stop Instructor Liu's determination to explore the ancient kingdom of Sumi, and after arranging everything, Instructor Liu ordered the entire convoy to drive along the canal towards the deep pit a kilometer away.

Upon reaching the location of the pit, the others were amazed at how strange it was. Because it was daytime and there was plenty of light, everyone could see the structure of the pit. The fact that the pit is almost straight up and down, and the side walls of the pit are almost vertical, amazes everyone.

When the previous large excavator was excavating, it had to dig out a small angle of the excavation surface to ensure that the surrounding sand would not fall into the pit. But even so, just because the angle of the excavation face was slightly larger, the sand under the excavator collapsed completely, and the excavator fell into the pit.

However, this deep pit is only five meters square, but it goes straight up and down, and the sand on the side wall of the pit does not even fall downward, all the people do not understand the reason, only Chen Ziyang and Instructor Liu know that this big pit formed in the yellow sand is much stronger than it seems.

Because he had planned for one night, Instructor Liu had already thought of a plan to deal with it, and he first ordered people to use several thin steel pipes to build a shelf on top of this deep pit, and then installed a pulley and a long rope on the shelf, so that the shelf and pulley could be used to put the personnel at the bottom of the deep pit.

When building the shelf, Chen Ziyang kept shining a flashlight on the bottom of the pit, trying to see what the thing in the pit was. Although it was daytime, two-thirds of the pit was still dark due to the angle of the sun, and the only way to see below was the light of a flashlight.

There is a protruding pillar-like object in the middle of the pit, which looks like half a stone pillar, and the lower half of the stone pillar seems to be connected to a circular stone plate, and the lower part of the stone plate is buried at the bottom of the deep pit, and only a small part is exposed, but because it is too far away, Chen Ziyang can only see the general outline of this stone pillar and the stone plate.

"Eryang, I know what is down there." Lying on the edge of the deep pit, Yang Lei, who had watched with Chen Ziyang for a long time, said.

Listening to Yang Lei's words, Chen Ziyang showed a puzzled look, feeling that this kid was about to start being unserious again. But then he looked at Yang Lei, and now Yang Lei's expression this time was very solemn, and it didn't look like a joke.

Originally, Chen Ziyang didn't think that Yang Lei would be able to know what the following things were, but recalling the things that Yang Lei reminded him of before, he felt that it was very likely that he would get some important clues from Yang Lei's body this time, so Chen Ziyang asked, "Tell me about it." ”

"The thing down there should be a stone mill."

"Stone mill?" After repeating Yang Lei's words, Chen Ziyang looked at the bottom of the pit again for a while. Although there seems to be a round stone plate under the stone pillar, this stone plate does not look like a stone mill.

"Why do you think it's a stone mill?"

"What do you think, what is the name of this ancient country, the ancient corn country, that means that there is a lot of corn in this country, how to eat the best corn? It is to use this stone mill to grind the corn into small ballasts and boil porridge to drink, so the round thing below must be a stone mill. ”

After listening to Yang Lei's words, Chen Ziyang was so angry that he almost didn't go away, and it was really difficult for Yang Lei to show such a serious expression for this kid, I didn't expect that he still didn't have anything serious at this time. After taking a few deep breaths, Chen Ziyang evened out the breath in his chest, and then he said to Yang Lei: "The ancient country of Sumi is not the ancient country of corn. ”

"That's right, didn't you say it's still corn for a long time?"

"I'll summarize what you just said in a sentence from my hometown, I'll go to your uncle's."

After a while, the shelf above the pit had been built, and Instructor Liu pulled the rope on the shelf vigorously, and now whether it was this shelf or the pulley placed on the shelf, and even the rope on the pulley was very firm, Instructor Liu looked at Chen Ziyang.

Understanding what Instructor Liu meant, Chen Ziyang nodded to him, and then took out the blood-colored diamond from his pocket and held it tightly in his right hand. Chen Ziyang came to Instructor Liu's side and asked Instructor Liu to tie the rope to his body.

It is very likely that the stone pillar and stone plate below are the mechanism that opened the treasure of the ancient kingdom of Sumi, so the first person to go down to the deep well was none other than Chen Ziyang.

"Eryang, be careful when you go down." Yang Lei said with concern. After nodding, Chen Ziyang signaled that Instructor Liu could start acting.

Seven or eight people tightened the long rope together, and then Chen Ziyang jumped from the edge of the pit to the pit with a slight force on his feet.

Under Instructor Liu's command, these seven or eight people carefully put the rope forward, and Chen Ziyang at the other end of the rope slowly descended, getting closer and closer to the bottom of the deep pit.

The closer to the bottom of the pit, the more obvious the object under the pit became, Chen Ziyang saw that his previous guess was correct, the thing under the pit was indeed a round stone plate connected to a square stone pillar, but the top of this stone pillar was not flat, but like the shape of a pyramid, showing a four-sided spire.

After going down to the bottom of the deep pit, Chen Ziyang did not untie the rope around his body, in case anything happened, he would let Instructor Liu and others pull him up, but he didn't know if it would be too late.

Standing at the bottom of the deep pit, Chen Ziyang looked carefully at the stone pillar in front of him, the stone pillar was not too high, only to his waist, and this stone pillar was indeed connected to the round stone plate below. When carefully observing the stone pillar and the round stone plate, there seemed to be some regular notches on the surface of Chen Ziyang and Yang Xian.

When he put the blood-colored diamond in his pocket, Chen Ziyang gently wiped the surface of the stone pillar with the sleeve of his right hand. As he wiped it, some of the yellow sand that had previously covered the surface of the pillar slowly fell, and after wiping all four sides of the pillar, the full picture of the pillar was revealed.

The pyramid above the pillar has no tip, but a groove from which extends a number of notches, about a few millimeters deep, down the four sides of the pillar to the circular stone plate.

Because his left hand is inconvenient, Chen Ziyang did not lean down to wipe the round stone plate, he just rubbed it on the surface of the stone plate with his shoes at will, Chen Ziyang now these notches are also covered with the surface of the round stone plate, extending down along the edge of the stone plate, these notches on the surface of the stone pillar and the stone plate look very regular, should be artificially hewn.

Because the sand around the stone plate was relatively hard, Chen Ziyang didn't know where the nicks extended, and after studying for a while, he took out the blood-colored diamond again, and hung the blood-colored diamond above the stone pillar to compare it carefully. Chen Ziyang's protruding horn of this blood-colored diamond seems to fit perfectly with the groove at the top of this stone pillar.

After taking a deep breath, Chen Ziyang placed the blood-red diamond on the top of the stone pillar.