After his reminder, I looked around, and sure enough, the two sides of the bank showed a gentle slope, and the overall look really looked like a huge colander.

"Is there any explanation for such terrain?" Yang Jianqiang's mouth opened, nodded and asked.

"I Ching said, this is a typical 'gathering yin and hiding yang' place, simply said that the intersection of yin and yang, is not only a place of great luck, but also a place of great evil, Yuan Tiangang of the Tang Dynasty said that this kind of place seems to belong to the mortal world, in fact does not belong to human beings."

Yang Jianqiang nodded again: "Then it seems that this is the place!" ”

At this time, I realized that Meng Lao was one of the other two people Yang Jianqiang said, but what about the last person? It's all in place, and there's no one yet.

Liu Liwei took out a few yellowed pieces of paper from his bag, stared at them a few times, looked around, and then stared at the yellowed paper.

I recognized it, these pieces of paper should be the maps in Wu Baocai's black box, it seems to be called "Part of the Topographic Map of Jiuquan", this name is quite terrifying, and I don't know why it is called so.

Jiuquan means deep underground in Chinese in China, which actually refers to the Yellow Spring, which is also appropriate to think about.

Instantly I thought of what Liu Liwei said yesterday, after the accident of the Yellow River Pharmaceutical Factory, the people behind it monitored Stationmaster Hong and Lao Wang for 20 years, just because someone had touched something in the safe, so it seems that this person is Wu Baocai.

I thought of Wu Jinghan asking me to visit Stationmaster Hong at the beginning, the reason was because Stationmaster Hong and Wu Jinghan's grandfather were acquaintances, so can it be concluded that Stationmaster Hong was also involved in the incident of secretly flipping the safe back then?

Now that these people are all dead, the truth of the matter can only be speculated.

Yang Jianqiang, Ma Huadong, and Xue Chuanqiang also leaned over and stared at the yellowed paper.

"How? Easy to find! ”

"It should ...... It should be in that area! Liu Liwei pointed to an area of rocky protrusions on the side of the guide, and everyone walked over.

This place is obviously different from other places, other places are beaches, the ground is relatively flat, this one is almost all gravel, Ma Huadong took out a brown thing similar to the size of a pocket watch from his arms, and glanced at the yellow paper in Liu Liwei's hand, then walked a few steps to the left, pointing to the ground: "According to the map, the entrance should be here!" ”

Later, I learned that the thing in Ma Huadong's hand is called a compass, which is a unique feng shui survey tool in my country, and the principle is similar to that of a compass, but the small Chinese compass is engraved with the heavenly stem and the five elements of the eight trigrams, which contains the wisdom of the ancients in China.

Don't look at a small compass, but there is a cosmic fortune and the principle of yin and yang feng shui hidden on it, but anyone who understands feng shui and looks at yin and yang has one.

Yang Jianqiang nodded and asked Professor Song, "Professor Song, do you have any impressions?" ”

At this time, I noticed that Professor Song's face was sallow, and his eyes were strange, and he shook his head slightly: "I don't have the slightest impression, it was night when we went down the cave, and there were already people in front of us, so I had almost no impression of the entrance of the cave." ”

At this time, another car drove on the dam, and everyone's eyes were drawn to it.

The car stopped twenty or thirty meters in front of us.

The left and right doors were opened almost at the same time, and I smiled when I saw the two people coming out of the car.

It turned out to be Liu Xili and Professor Gu! How did they get here? Could it be that one of the two of them was the last member of the expedition.

"Professor Gu, hard work!"

Yang Jianqiang and Liu Liwei hurriedly greeted them.

Several old men also smiled and followed Professor Gu to him.

"Old Gu, I'm waiting for you!"

"It's long overdue, this isn't your character!"

It turns out that several of them have known each other for a long time, and if you think about it, several people are also domestic awesome characters in their industry, and it is normal for them to know each other.

Liu Xili took out a suitcase from the trunk of the car, and when he opened it, it contained various medicines and several bottles of liquids.

"Liu Suo, Team Leader Yang, it's too hard! But it's finally ready! Liu Xili said with a wry smile.

"Good work, Healy!" Liu Liwei replied as if complimenting, and then turned around and asked the three special police officers to take the things.

Originally, I thought that the last team member was Liu Xili, he was young and strong, Professor Gu was seventy years old, plus him, a team of more than a dozen people, and there were five old men over sixty years old.

However, the person who remained was Professor Gu.

Such a large team of fifteen people is considered to be together, how to evaluate it, although there are five old men and two women in these fifteen people, they are finally neat, both archaeological experts like Professor Song and Teacher Wu (two dozen graduate students who study archaeology), as well as Liu Liwei, Yang Jianqiang, and three "strong men" like special police, in addition to masters of public opinion, medical experts, relatively speaking, Han Jianjian and I are two wastewood.

However, as Yang Jianqiang said, my senses are many times more sensitive than ordinary people, and my strength is great, maybe it can come in handy at critical moments, and I can play the role of a "police dog".

In the next hour, a few of our young Heqian special police officers dug up the place that Ma Huadong had just pointed out.

Soon a large hole more than one square meter wide and two meters deep was dug out, and I began to wonder if the old man surnamed Ma was mistaken. The others stared around at the entrance of the cave and didn't say anything, so we kept digging.

Because the entrance to the cave is not very big, it can't allow a few of us to start at the same time, so we have to divide into two groups to dig in turns, every ten minutes, and when it was my turn to dig with Han Jianjian, I went down with the third shovel.

"Bang dang!"

There was a crisp sound, and the shovel poked at the hard object, and everyone's eyes immediately stared at the hole.

"It seems to be...... It is a slate! ”

Han Jianjian poked the soil at the bottom of the cave and shouted.

"Looks like we've found a place!" Yang Jianqiang snorted coldly.

I also instantly remembered the contents of the envelope in Wu Baocai's black box, as well as what Yang Jianqiang said, before the Qing Dynasty Daoguang years, when the Yamen was repairing the bridge, several huge strange animal stone carvings were dug here, and under the stone carvings was a bottomless deep hole, and then it was blocked, and the hole was dug again more than 20 years ago.

The three SWAT officers took out the cable and iron hook from the car, hooked the stone slab up, and there was a dark hole underneath.

It took another half an hour to clean up the area around the hole.

With my extraordinary eyesight, I could see a stone staircase sloping downwards inside the cave, and a rusty chain was faintly visible on one side of the stone steps.

When Mr. Wu saw the faintly visible stone steps in the cave, he was very excited, and he bent down and wanted to go down, but was stopped by Yang Jianqiang on one side.

"Teacher Wu, you can't go down for the time being!"

Teacher Wu was stunned for a moment, then patted the back of his head and muttered, "I'm really confused!" ”

Yang Jianqiang smiled slightly, turned around and shouted at the three special policemen, "Put things in!" ”

One of the SWAT officers ran up to Yvette and pulled a birdcage out of the trunk, which contained a fat white duck.

Well? What are ducks for? It can't be a sacrifice, right?

The SWAT tied the duck to the leg with a rope and threw the duck into the hole, accompanied by a "croaking" sound that changed from high to low, and the duck should have entered the depths of the hole.

I'm confused, what's this for? Let the ducks find their way?

Everyone else watched all this and didn't speak.

After waiting for about five or six minutes, the SWAT slowly pulled the duck up, and there was another "quack" sound, and the duck was thrown by the SWAT to the driver of Yvette.

"Alright! Comrades, brothers, this scientific expedition has officially begun, let's go to the cave! ”

Yang Jianqiang coughed lightly, followed by the three special police officers, and the fourth stepped down, several old men seemed to be very excited, especially Professor Song, who trembled a little when he went down the cave.

The stone steps were very steep, Han Jianli and I walked at the back, I grabbed the chain with one hand, and only then did I barely stand firm, and then I noticed that these chains seemed to be bronze, but the rust was so bad that I was even worried that the bronze chain would be torn off because of too much force.

A musty smell came up from the bottom of the cave, making it uncomfortable to ask.

The group lined up, bent down and walked down, the speed was very slow, I was careful to step down the stone steps at the same time, but also to pay attention to protect Wu Jinghan in front of me, the two girls came to such a place, it was dirty and dark, it was really a bit embarrassing.

After walking down the steep stone steps for four or five minutes, I finally reached the end, and the water under my feet did not reach the surface of my feet.

This is the same as Professor Song described, a tunnel that barely accommodates an off-road vehicle, and the walls of the cave on both sides have obvious traces of artificial polishing, and it is impossible to tell whether the cave walls are made of earth or stone.

"Everyone has a headlamp in their bag, the further you go inside, the darker it gets, bring it with you!" After the SWAT at the head stopped, he turned around and greeted everyone.

When I opened the black bag, I found that the equipment in the bag was complete, including climbing tools and waterproof equipment, and it seemed that I had made full preparations for this scientific expedition.

Everyone put on their headlamps and turned them on, and suddenly the surroundings became very bright, Yang Jianqiang walked in front of Professor Song and said softly: "Professor Song, next you come to lead the way!" ”

I also think that he should lead the way, after all, I have been here once, and even after 20 years, I should still have a deep impression of this special place.

Under the light, Professor Song's face was pale, he just nodded slightly, didn't say anything, and walked straight to the front of the line. While walking, Professor Wu and the two beauties looked at the cave walls on both sides, and let out exclamations from time to time.

After I walked for half an hour, I couldn't help but ask Wu Jinghan: "There are almost bare cave walls on both sides, the same as the unrenovated walls, why are you so excited?" ”

Wu Jinghan glanced at me and replied in a low voice: "As soon as you look at these cave walls, you can know that they have been polished manually, it's worth the trip!" ”

Professional disease, it's terrible!

After walking for about an hour, I noticed that before I knew it, the surrounding environment had changed, and rough rocks began to appear on both sides, which looked natural, which meant that this was no longer a hand-polished tunnel, but a natural underground crack.

The ground also became dry.

After walking for dozens of minutes, it was suddenly dark all around, and the light of the headlamp was dispersed into the endless darkness in front of me, and I was stunned for a few seconds before I realized that this was the result of the eyes becoming wider, and the light of the headlamp could not reach the edge, and was swallowed up by the darkness.

Professor Song at the front stopped.

"I seem to have some impression of this place, further along, there are obvious traces of human activity, I think let's rest first!" After Professor Song finished speaking, he looked at Yang Jianqiang.

"Alright! The journey went very smoothly, and we also took advantage of the rest to discuss the rest of the matter. ”

A few of them formed a circle, and in an instant, the dozen square meters became brightly lit, in stark contrast to the boundless darkness around them, and I noticed that at this time, the special police officers were holding small machine guns in their hands, and they were very consciously facing away from us, standing guard in three directions.

"Old Song, why do I feel that since you came to the Yellow River, your mental state has been bad!" Teacher Wu asked with concern.

"O-nothing, I always feel bad when I think of my teammates who died tragically in the ground......" he said, glancing to the side, giving me a strange feeling.

"That's not your fault! If you were like them, you died underground back then, wouldn't there be no scientific expedition team like us? ”

"Strange!" At this time, Meng Lao looked at the compass in his hand and said in a speech.

"What's wrong? Meng Lao! Yang Jianqiang hurriedly asked.

"There's a strong magnetic field around here, and even the compass in my hand is out of order." Meng Lao shook the compass in his hand, "There must be a strong magnetic field interference nearby." ”

"Oh!" Yang Jianqiang turned around again and asked Han Jianjian, "Young man, can you still tell the direction?" ”

Han Jianli looked to both sides, and then replied disappreciatively: "Yes! When we first came down, we were heading west, but the tunnel was not straight, and when we finally walked out of the tunnel, it was facing south. ”

On the other side, Ma Huadong and Xue Chuanqiang also discussed.

"Old horse, let's walk this way for nearly two hours!"

Ma Huadong nodded: "It's almost." ”

"Do you feel very tired?"

"Don't seem to be too tired?"

"Don't you think it's weird?"

"Yes...... It's a little weird! ”

Professor Song snorted: "You two are pretending to be confused!" The ground on this road is a gentle slope, which means that we are slowly walking downhill, which is naturally much lighter than usual! ”

Before the two old men could respond, Meng Lao clapped his hands and exclaimed, "So we are a certain distance from the ground at this time?" ”

Before, I thought that Meng Lao had the temperament of an old pedant, thinking that he must have the calm energy of Zhou Yu or Zhuge Liang, a lupine scarf, and he was forcibly abducted while talking and laughing. I didn't expect to be so flustered just now, it's not as good as the two girls!

"It's estimated that 200 meters is there!" Yang Jianqiang's voice raised, and he asked again, "Does this matter?" ”

Meng Lao sighed and said in a low voice: "Below the colander's terrain is the place where the Yin is gathered, that is, the land of the Nine Springs, which was the earliest recorded in China. ”

"Not bad! The original Nine Springs were also called Yellow Springs, which actually referred to somewhere under the Yellow River. Ma Huadong continued.

"Ahh That...... What does that mean?" Han Jianjian opened his mouth wide and said tremblingly.

Meng Lao replied: "If this is the case, then at least it means that the existence of this underground space is a little weird, and it is ...... And we have to rethink one thing, that is, who left the remains here? ”

After listening to this, Mr. Wu nodded and asked Professor Song beside him: "The bronzes of the Gulai Kingdom that were stolen back then really came from here?" ”

Professor Song nodded: "When I was invited to participate in the last scientific expedition, I read the information very carefully, those bronzes were indeed stolen from under the Yellow River, we thought it was an ancient tomb, but I also wondered about this for 20 years, maybe this underground space was originally much larger than we estimated back then, and the last time we didn't start the scientific expedition, it was already in the sand." ”

"Along the way, I paid attention to the walls of the tunnel, as if it existed before the existence of the Gulai Kingdom!" Teacher Wu said slowly.

"Teacher, you said that tunnel existed before the ancient kingdom of Gulai? How is this possible? The existence of the Gulai Kingdom is not later than that of Yao Shunyu, could it be that this tunnel ......" Yang Huiling asked in surprise.

"According to the degree of oxidation of the cave wall, I estimate that it is four or five thousand years old, or even earlier!" He turned to Professor Song again, "That's right! Old Song? ”

Professor Song nodded, shook his head and said: "Twenty years ago, I was still young, especially lack of knowledge in geology, I didn't see it, just now when I passed through the tunnel for more than an hour, I also noticed that according to the degree of oxidation of the cave wall, this tunnel should have existed much earlier than I originally thought." ”