The wilderness is vast and boundless.

When you look up, it's either yellow sand or gravel, not to mention grass, not even a camel thorn.

The road is like a washboard, a ditch is a bump, and the chassis of the car seems to be equipped with a spring, and it is bumpy to walk ten meters three times.

And such a road is called a "highway" by the police and officers and soldiers?

There are no roads anywhere else in Guyin.

I feel that my brain is about to be peaked out, and I can be regarded as arriving at Dahuang Mountain.

It is both a place name and a landmark where the outpost is located.

It is surrounded by a wall, and there are three brick houses, one of which is two-storey, and the second floor is all glass.

At the door stood two people, one tall and one short, a man and a woman, wearing camouflage uniforms and hats, their necks red and black, as if dyed.

"Director, Company Commander Zhu!"

"Xiaobai, Xiaolu, hard work...... This is Mr. Li! ”

I had called before, and knowing their intentions, Bai Jian hurriedly greeted: "Hello Teacher Li!" ”

"Two good two good ......"

Li Dingan hurriedly smiled and pulled the car door, "What are you rubbing, come down!" ”

The bear boy reluctantly got out of the back seat.

"Chao?" Mother's eyes turned red in an instant.

Bai Jian smiled reluctantly: "Is Xiao Chao in trouble again?" ”

"Nope! Not only did he not cause trouble, but he also made a great contribution! ”

The child raised his head in surprise, and Li Dingan touched his head, "What do you see, I said something wrong?" ”

Of course it's true, but the little kid never believed it: don't sue me, buy me toys?

It wouldn't be bad if I didn't let my dad smoke me.

Now, he's finally believing a little bit......

He gritted his teeth and smiled, then his eyes turned red and he threw himself into his mother's arms.

It's been almost two months since the Chinese New Year, how can any child not want his parents?

"Teacher Li, thank you, please come in!"

"Good!"

Li Dingan nodded, and Zuo Peng and Xiao Jing moved things down from the car.

It is some daily necessities, as well as a set of high-power solar charging equipment.

After all, the bear child helped him a lot......

After entering the house and chatting a few words, Li Dingan said that it was not easy for the wind to stop once, and it was necessary to seize the time to investigate, and everyone went out again.

Bai Chao took Li Ding'an to the north, and after walking nearly fifty meters, the child pointed to a stone beam more than ten meters long: "I picked it up from here." ”

The shape of the stone beam is peculiar, as if something is about to emerge from the ground, but it only arches its back.

It was bright, swarthy, and reflected the light, flashing like a mirror.

In fact, it is a mausoleum-like area composed of mirrors, iron and stones, and most of it is buried in sand, and only a top is exposed, which is very common in the northwest region.

But there is one thing: the main ingredient of this thing is fine-grained magnetite, which is not used by nine percent of detection instruments, including the compass.

"Teacher Li, what should I do?"

"Explore, take this as the center, and explore in four directions: first use magnetism to probe out the boundary of the disturbed area, and then use geonics to probe outward: the detection target is the regular legacy cultural relics: arrowheads, gun heads, etc., ......"

"Understood!"

The movements were very fast, Zuo Peng gave an order, and the four groups of detectives moved, and for a while, the sounder kept ringing.

Then, a small black dot flew to the north, getting closer and bigger.

He Anbang, Lu Benzhi, Wang Yongqian, and an expert on ancient architecture of the Forbidden City got off the plane.

"How?"

Lu Benzhi shook his head: "In addition to the sand dunes, it is the Gobi, and there are some low mountains and hills, but I haven't found any ancient river channels!" ”

"Are there any lakes or salt-alkali basins or anything like that?"

"No, let alone the lake, not even a blister."

"It looks like it's been buried in the sand."

Li Ding'an exhaled, "It's okay, it's just luck, if you can't find it, you can't find it!" ”

Wang Yongqian frowned: "What are you looking for?" ”

"Bigan City, Salt Lake, Jihe."

They knew that Li Ding'an had just said a few days ago: Emperor Taiwu of the Northern Wei Dynasty was built, and it should be roughly in the area of Norgen in the South Gobi Province of Mongolia, almost 120 kilometers away from here.

Finding Bigan City is equivalent to finding the southern tributary of the Orkhon River, and it is equivalent to determining the coordinates from the area of a circle to a straight line, and then looking for it along the south.

It is not a big problem if there is no ancient river channel, it is about 100 kilometers in radius, and it will take a little time at most if you can't run this range......

But where did the salt lake and the Jihe River come from?

Li Ding'an sighed: "I only found out in the past few days, "The Secret History of the Yuan Dynasty": The southern foot of Hangai Mountain is 34 degrees and 5 minutes to the east, extremely high 47 degrees, the source is called the water, the southeast flows, and the history is more than 900 miles......

More than 100 miles south of Hangai Mountain, both Lan falls down the mountain, the southern foot of the source is called the Amulin River, the southeast flows 700 miles and merges the water, and it is called the Ji River...... More than 300 miles to the southeast, it is due east, and more than 100 miles, there is a salty spring flowing into this in the south, and another 300 miles, turning to the northwest flow, and then entering the sudden spring......

The focus is on this sudden spring: Dongfeng in Hei Province, the battle of Guduo, is really beyond the reach of the Han and Tang Dynasties. Yu tastes the patrol to Taonan, passes the sudden spring, smells the remnant stone, and engraves the words of the general of Han Li...... Especially the evidence that the military strength of the Han Dynasty has reached the black realm, Ji Gong Leshi, how can there be no one...... This is the record of 'Yan Ran Le Shi' in the "Great Qing Dynasty Tongzhi......"

Several people looked confused: "Dou Xian Yanran Jin Gong is in Hangai Mountain...... What does it mean that this river flows back and forth? ”

"Yes!" Li Ding'an nodded heavily, "The key is this flow direction: it flows more than 900 miles to the southeast, more than 100 miles to the south, and more than 300 miles to the east, how much is this, more than 700 kilometers, right?"

More than 100 miles to the east, and then more than 300 miles, how much does it add up? This means that the river flows nearly 1,000 kilometers in a southeasterly direction...... How far has Hang Aishan come to this? ”

He Anbang and Wang Yongqian are numb: the southern foot of Hangai Mountain is more than 500 kilometers to here, and it flows more than 400 kilometers to the southeast, not to mention Alxa, all of which flow to Ningxia?

"Impossible, Alxa is high in the southeast and low in the northwest, how does it flow over?"

"I also know that it is impossible, and the "Secret History of the Yuan Dynasty" is not rigorous, so there should be discrepancies, but there is another one: "Wei Shu Worm Biography": In the sixth year of his reign (391), Tuoba Jue chased the worm (Rouran), and at the foot of the south bed of the moraine, the big break...... Class teacher, meet the salt pool, the pond is twenty-five miles from east to west, and five miles from north to south...... Purple and clear, water out of the stone salt ......"

"The salt pond, that is, the salty spring in the secret history you just mentioned, means that it is in the south of the South Bed Mountain, where is the South Bed Mountain?"

"Nomohun Mountain." Li Ding'an pointed north: "It is less than thirty kilometers from the border. ”

"Huh?" He Anbang's eyes lit up, "Nanbed Mountain is a total of thirty kilometers away from here, and the salt pond is still in the south of the mountain...... So, the ruins are likely to be south of the border? ”

"Quite the opposite!" Li Ding'an sighed, "There is a salty spring flowing into this place in the south, which means that the river is north of Yanchi, and it is more likely to be north of Nanbed Mountain...... So, ninety-nine percent of the time, the ruins are on the north side! ”

Suddenly, He Anbang twisted his face: "It's in vain, why are you looking for something here?" ”

"Looking for the route of the Northern Wei Dynasty's Northern Expedition Rouran's march and the class division, as long as you find this road, you can find the salt pond, and then find the water ......"

Li Dingan sighed, "Besides, I've said it eight hundred times: overseas, overseas, you are still entangled in wool?" ”

He Anbang was speechless.

was depressed, and Fang Zhijie's voice came from the walkie-talkie: "Mr. Li, I found out: the stone beam is more than 60 meters north, and there are arrows and clusters of arrows underground...... The burial is not deep, only forty or fifty centimeters. We also dug out a copper coin, which looked like five baht. There are also two bone fragments, very wide, almost six centimeters, fifteen centimeters long, arc-shaped......"

Han 5 baht, bone fragments...... Well, bone fragments?

Suddenly, Li Ding'an thought of the gun head that Bai Chao picked up.

"Xiao Fang, you look good, isn't it ivory?"

"Ah, Mr. Li, it's so dry, basically no gloss, I can't recognize ......"

"Then you compare, the two bone fragments combined, is it half a cylinder?"

"Ah...... Seems to be? ”

Like, that's right......

"This is ivory, which is attached to the flagpole of the coach's flag, so it is also called the ivory flag...... There are also copper coins: the five baht of the Later Han Dynasty is too large in existence, and it has been circulated until the beginning of the Sui Dynasty. Besides, from the Western Jin Dynasty to the Northern Zhou Dynasty, I haven't minted much money well, so it's normal to appear here......"

Li Ding'an slapped his palm: "He Guan, Director Wang, nine times out of ten, this is the Yacheng (mostly a fortress) that was temporarily stationed during Tuoba Si or Tuoba Tao's northern expedition to Rouran...... Dig it......"

The two looked at each other: can you find a city in this place?

For a while, I didn't know whether to say that Li Dingan was too professional or lucky......

Turning his mind, He Anbang took out his mobile phone and turned it around several times before finding a signal: "Director Yan, it's ...... live" (end of this chapter)