At the end of October 2060, Dongfang Chen and Solomon came to Tianshui City, Gansu Province. After a short rest, the two disguised themselves as scholars in their combat uniforms and began to search for related legends.

The locals talk about the female snail head is the way, but they are all strange and fantasy things, and Dongfang Chen has no information about it. I had no choice but to ask local experts who specialize in this area, and the results obtained were no different from textbooks, and any high school student knew about it.

In the end, it was Akama who came up with the idea and suggested that Dongfang Chen directly transfer the Poor River on the spot. Dongfang Chen's heart moved: This is a breakthrough. So he took Akama's advice and rented a car with Solomon to go to the river.

When he really arrived at the place, Dongfang Chen found that the river was really pitiful, and it was not an exaggeration to say that it was a ditch. However, it also confirms the authenticity of the people who lived here in ancient times to manage the river.

At that time, it was the age of primitive tribes, how strong could the productivity and labor capacity be? It was just enough to survive, and if it was necessary to control the waterway, it was necessary to choose the river closest to the settlement, and the flow of the river should not be too large, otherwise it would be enough to survive.

At that time, the only way to manage the waterways was not to change the flow and direction of the river, but to dig drainage canals to divert river water into the fields and form an irrigation system. The water control in the era of Nuwa Taiyi was probably such a project.

But after all, thousands of years of mulberry fields and seas, how easy is it to restore the situation of the ancient times through the existing landforms and rivers? At this time, Dongfang Chen's holographic archaeology came in handy. Hand shovels and thousands of "probes" were busy day and night near the Qihe River Basin, during which Dongfang Chen was not idle, and when the hydrological and geomorphological environment was very complex, he used the low-energy pulse mode of the "executioner" to detect it.

At midnight the next day, everyone finally made a major discovery. In a section of the suspected ancient channel of the Qihe River, holographic images show that there are more than 10 linear areas, and the color spectrum is obviously different from the surrounding environment. These dozen linear drawings, perpendicular to the ground, are arranged at different intervals, and the lines are of different lengths, but all the bottom ends of the lines are in the same horizontal plane, and only the upper ends are unequal.

Dongfang Chen frowned and looked at it for a long time, and finally gritted his teeth and said: "Excluding the fantasy factors of gods and monsters, it can only be artificial."

Gotta dig it up and see!"

After that, Dongfang Chen took Solomon to the location of a random line map, and looked around to see that this place was actually in an orchard.

What should I do? If we rush to dig in someone else's orchard at this time, it will inevitably alarm the owner of the orchard, and when the time comes, the residents of the nearby towns will come to join in the fun, how can the matter continue?

There was no way, Dongfang Chen had to pick another line map indication land, but as a result, the remaining line map indication land was either in the farmhouse or in the field. In the end, there was really no way, Dongfang Chen decided to pick a secluded place away from the location of the line map, and planned to dig down first, and then dig horizontally in the direction of the line map area, and use the method of side detour excavation to get close to the target point.

After nearly an hour and a half of work by thousands of "probes", the excavation progress of the underground tunnel finally approached the linear area. Dongfang Chen took the lead, and he planned to come in person for the excavation of the final intersection. When he finally found himself in the so-called linear area, according to the comparison between the holographic image data and the soil quality in the field, he found that the linear area displayed on the hologram was only less than one meter in diameter.

"Oh my God, this, it's a well!

It turns out that these dozen or so line drawings are wells dug by the people living here in ancient times, during the Taiyi period of Nuwa!"

Dongfang Chen's efforts for many days have finally not been in vain, he is confident that he has found the most valuable clue, and firmly believes that the truth is not far away.

Where there are wells, there are underground water veins. It's no wonder that the bottom of the line charts is all at the same level, which means that the underground water system is dug up, and the well will naturally stop digging when it sees water. But more than a dozen wells dug up at the same depth at the same time and dug water, which is too coincidental, right?

Was it so? At that time, along all the well digging lines, there was an underground river?

The more Dongfang Chen thought about it, the more he felt that this was the case, although this ancient well had dried up and been filled with miscellaneous soil at this time, it did not mean that the former underground river had also disappeared, the underground river was likely to change its watercourse many times over the years, but it must be nearby, not too far, and it would not disappear.

Thinking of this, Dongfang Chen ordered all the "probes" to take the ancient well as a starting point and spread out to drill and search downward. Within 30 minutes, a report came from the hand shovel: Dongfang Chen's location was in the direction of eleven o'clock, at a distance of 113 meters and a depth of 15.7 meters, and an underground river was found.

Dongfang Chen was overjoyed, and instructed the hand shovel to command half of the "probe" to do a good job of backfilling and covering, while he took Solomon and the other half of the "probe" to open the way and quickly advance to the underground river.

After a while, after a muffled rumble, all the earth and rocks in front of him rolled down, and there was the sound of rushing water. When the underground river arrived, Dongfang Chen and Solomon drilled out of the tunnel, and the field of vision was bright, it was an underground dark river with a width of more than 30 meters and a gentle flow.

Faced with this situation and feeling the magic of nature, Dongfang Chen could no longer hold back his excitement and let out a long roar at the dark and deep underground world. Later, according to the combat uniform positioning system, he learned that this underground river flowed from the southwest to the Tianshui area, which also confirmed that the southern source of the Qihe River came from the mountainous area of Lixian County in the southwest of Tianshui.

Could it be that the real Tianshui in people's mouths in ancient times was not the inconspicuous river on the ground, but this underground river?

He couldn't hide his excitement, and he didn't care that Solomon was still on his side, and hurriedly summoned the treasure at the bottom of the box in his archaeological expedition: the "Probe" B-type detection system!

Different from the 1,000 ordinary "probes" that have made great contributions to Dongfang Chen's archaeological exploration work in recent years, the "Probe" Type B is all designed and selected by Akama himself, and is manufactured in the equipment research and development workshop of the "Crimson Rhapsody" interstellar spacecraft, which is a real cosmic-level detection device, and has reached a very high level of Zhizu science and technology.

The "Probe" B-type system has a full set of 128 independent high-intelligence scientific research platforms, 72 standby redundancy, each platform is drop-shaped in the standby state, the texture is flexible and elastic, only the size of a mango. When the working state is turned on, it can be transformed into any form to meet any working environment.

The working environment that this equipment can adapt to is simply unbelievable. Extreme temperature difference range: minus 2,500 degrees Celsius (Note: Some antimatter can reach ultra-low temperatures well below the absolute zero of the positive universe.) In other words, the "Probe" type B can work in an antimatter environment after special preparation. to 150 million degrees Celsius. Ultimate differential pressure range: 1 times 10 to the minus 26 power absolute vacuum pressure unit to standard atomic polar magnetar pressure unit. That is, it can operate in a pressure range down to an almost absolute vacuum, up to all types of white dwarfs at surface pressure levels.

As for other environmental factors, they are nothing compared to the extreme temperature difference and pressure difference mentioned above. Originally, Prosius and Akama did not intend to hand over such advanced technology to Dongfang Chen, but considering that the group leader begged and swore that he would only use it for the archaeological exploration that he was most interested in, and would never use this thing for other things, after thinking twice, Akama still made this set of "probe" B-type detectors for Dongfang Chen.

Now, Dongfang Chen couldn't wait to take out his treasure before he went deep into the universe, which shows that he attaches great importance to the mystery of the female snail, and he doesn't have the patience to wait for the antique-like "probe" prototype system to explore the underground river slowly, he intends to use the fastest way.

I saw that after the appearance of three droplet-shaped "probe" B-type intelligent working platforms, one dived directly into the river, one rapidly hung in the river, and the other disappeared into the soil and rocks above the river. At the same time, dozens of misty rays of light shot out from Dongfang Chen's wrist were simultaneously updating the ultra-clear holographic images within a range of five hundred meters of the entire underground river, and the suspicious and key points were displayed separately, and there were also a large number of intelligent graphic analysis opinions next to them.

In less than two minutes, Probe Type B discovered the interrelationship between all the remains of ancient wells and the underground river system, and deduced and mapped the actual situation of the underground river and those wells thousands of years ago when they were in the same position. Soon after, the intelligent report also found new ancient well relics along the direction of the underground river vein, and the three "probes" have continued to explore on their own.

Finally, forty minutes later, the intelligence reported that 56.7 kilometers away from Dongfang Chen's location, that is, somewhere in the southwest of this place, the underground river suddenly expanded into a small underground lake, and 13 kilometers away from the underground lake, the last ancient well was discovered. Later, until the underground lake, no remains of ancient wells were found.

Dongfang Chen looked at the intelligence report and fell into deep thought, suddenly, he found a problem, and hurriedly asked the intelligence: "Hand shovel, in all the reports you just made, all the ancient wells you found were called ancient well ruins, why is the last ancient well, that is, the one 13 kilometers away from the underground lake, only said that it is an ancient well and not an ancient well ruins?"

Dongfang Chen's archaeological smart hand shovel immediately replied: "Because the ancient well is well preserved and leads directly to the underground river, no traces of collapse and burial have been found, and it is speculated that it is still in use today." So logically, I can't call it the ruins of ancient wells!"

When Dongfang Chen heard this, his blood rushed to his brain in an instant, and his voice trembled with excitement: "What did you say? The last ancient well is still in use today? Is this true?"

The shovel immediately replied, "Master, my logical processing system has determined that I will only report to you the truth that I have detected. ”

Dongfang Chen shouted: "Tell me, the ancient well at the last 13 kilometers, where does it lead to the ground?"

"The data shows that it is a village called Fengguichuan!"