Yang Ji continued to look down, and there were a lot of scattered clues like this. It's not as detailed as it is everywhere. As long as there is a Nongsang Guku, these four words have been collected by him.

Moreover, Yang Ji found that the pages inserted by Chen Sicheng in the book were very miscellaneous, and not all of them were Nongsang Si's things. There are also some that are completely unrelated to the history of the eight poles of Nongsangsi. Simply because there are narratives about the previous dynasty in it.

"He's collecting information about the past. ”

Yang Ji flipped through several pages in succession and found information about the previous dynasty. Some of the information is still very new, and it is clear that Chen Lao Sicheng collected it from outside.

These materials of the previous dynasties are very scattered, and looking at them individually, Yang Ji really can't judge the basis for such a collection. Until I saw a piece of something the size of a child's palm on the page, yellow, broken, and vague in some places.

"Map of the front dynasty!"

Yang Ji stretched out two fingers and picked up the piece of paper from the page. In the light of the oil lamp, it was clearly a fragmented map of the front dynasty, with dense winding curves.

In the center of the map, the word "Langya" is clearly visible. It's just that it's different from what Yang Ji knows, and the Langya map shown on this piece of paper is very different from what Yang Ji knows.

――This is a map of the former dynasty from more than 1,000 years ago!

In the midst of lightning and fire, Yang Ji looked at the mutilated map of the former dynasty in his hand, and countless thoughts flashed through his mind. For more than a thousand years, the movement of the earth's crust and the tragic war can lead to changes in the surface terrain.

There is no doubt that the mountains and rivers of Langya County have changed a lot from the previous dynasty more than 1,000 years ago, and it is undoubtedly difficult to see the terrain from the map of the previous dynasty.

But seeing this, Yang Ji already understood what Chen Lao Sicheng wanted to do.

“...... He wanted to find out the ancient library of Nongsang through the map of the previous dynasty, and then compare the location of Guò with the modern map. Determine where it is. ”

A thought flashed through Yang Ji's mind, and he finally fully understood Chen Lao Sicheng's train of thought. Over the course of more than a thousand years, the characters, cities, and terrain will change greatly.

However, no matter how much has changed in the past thousand years, there are always some things that will not change. As long as you find those things that don't change, you can roughly determine the location on both maps. So as to find out the location of Nongsang Ancient Cave.

“...... No wonder Chen Lao Sicheng would spend so much energy to draw a map of Langya. ”

Yang Ji's heart was suddenly shocked. He already fully understood Chen Lao Sicheng's intentions. In order to determine the Nongsang Guku by comparing the two maps of Guò, it is necessary to first have a map of Langya County.

Chen Lao Sicheng must have wanted to draw a complete map of Langya, and then compare the two to find out the similarities. The final positioning work is then carried out.

"It's a pity that the day is not a holiday. Chen Lao Sicheng spent so much energy, but in the end he couldn't finish it. ”

Yang Ji sighed in his heart and couldn't help but secretly regret it.

He has actually completed more than ninety percent of this work, but unfortunately, even when he dies. He still didn't know enough to draw a complete map of Langya.

Yang Ji secretly regretted that this work could only be done by him now.

Flipping all the way back, Yang Ji saw many mutilated maps that Chen Lao Sicheng didn't know where to collect. These things are only partial, not complete.

But looking at these fragmented maps of the former dynasties, Yang Ji had slowly pieced together a complete map of the former dynasties in his mind. Turning to the last page of the book, in the cover compartment, Yang Ji really found a map drawn by Lao Sicheng.

The map was folded into squares by him, and after opening it. It was almost exactly the same as the map that Yang Ji had pieced together in his mind. There is a striking black dot in the upper left part of the map, which is the location of Nongsang Ancient Cave.

"Lord Chen. Rest assured. No matter what, I'll do your last wish. ”

Yang Ji sighed deeply, pulled out the map inside, then closed the book and inserted it back into its original position on the shelf.

Leave the room and walk through the alley from which you came. Yang Ji returned to the lobby of the Yamen of the Nongsang Division. Leaning down, Yang Ji collected the drawings on the ground one by one, carefully flattened them, sorted them out, and then put them on the desk.

Chen Lao Sicheng's work has been completed ninety percent. Now only the last and most crucial step remains!

Yang Ji took out a brush from Nongsang Division, spread out a piece of paper, dipped it in ink, pondered for a while, and then drew the map of Langya that he had pieced together from hundreds of drawings in his mind.

To integrate hundreds of complicated draft drawings into a complete map. For an ordinary person like Chen Lao Sicheng, there is no doubt that it is a huge job that requires a lot of effort and time.

But for a martial artist like Yang Ji, it is far less difficult than imagined.

The lights flickered, and Yang Ji wrote alone in the firelight. It is not very difficult to put together these draft drawings, but it is not easy to simplify this huge "Langya map" into a map of the same system according to the abbreviated way of the map of the previous dynasty.

Chen Lao Sicheng's map is too detailed. The real map is far less detailed, at least the maps of the former dynasties collected by Chen Lao Sicheng are far less detailed, and Yang Ji needs to crop these detailed terrain and miniaturize them according to a certain scale to create a standard map similar to the map of the previous dynasty.

"No! There are at least five or six places where this map is not perfect, so there is no way to make the desired map. ”

Half an hour later, Yang Ji stopped the brush, a pair of sword eyebrows wrinkled deeply, and looked at the pen. Lao Sicheng still has some places that can not be painted.

Yang Ji originally thought that it would not have much impact, but when it came to the last step, Yang Ji found that without these parts, this map could not be made at all.

"I can only stop for a while. The rest of the places had to be fully painted before they could be described. ”

Yang Ji sighed and put the brush aside. Fortunately, there are not many places where Lao Si Cheng can be painted, and with the ability of Yang Ji as a martial artist, it will not take long to complete it.

The next day, as soon as the morning dawned, Yang Ji went to the northwest. In the next few days, Yang Ji was on the go. Cliffs everywhere, abyssal moats everywhere...... , Yang Ji took a pen and paper and drew everywhere.

Five days later, Yang Jiyi returned to the Yamen of the Ganong Sangsi with a stack of manuscript papers.

"It's finally done!"

Yang Ji hung the pen on the pen stand, looked at a small map of Langya in front of him where the ink had not dried, and let out a long breath with a smile, as if he had unloaded a thousand catties of burden.

No matter what, Lao Si Cheng's last wish, he finally completed the last step for him! The map in front of him was only the size of a palm, and compared to the hundreds of drawings, it was far less detailed, but this was exactly what he needed.

Yang Ji held the Langya map he drew in his left palm, and the Langya map of the former dynasty summarized by Lao Sicheng from those ancient books and maps in his right palm, comparing left and right, his eyes wandering.

Whether you can find out the ancient library of Nongsang depends on these last two pictures.

Yang Ji's expression was solemn, and his eyes looked at the two maps motionless. In terms of content, the terrain and leylines of these two maps are completely different.

If not, many people might think at first glance that this might be two completely unrelated maps. However, Yang Ji carefully distinguished, and still found some similarities from these two maps that looked completely different.

"Ten Thousand Graves Ridge ......"

Yang Ji's eyes were bright, and he suddenly stretched out a finger and clicked on a point on the map in a pile of messy and distorted lines, "This location is Wanfen Ridge." ”

Wanfenling has a long history, it is a battlefield of all dynasties, whether it is the previous dynasty or the current dynasty, the location of the mass grave of Wanfenling has never changed.

No matter how the two maps change, no matter how the two maps change. The location of the Ten Thousand Graves Ridge will never change. In a few thousand years, the land will change, and this place will still be here.

The first point is determined!

Yang Ji breathed a sigh of relief slightly, everything began to happen, and Wanfenling was an unexpected gain. As soon as the first point is found, there will be a second invariant and a third invariant .......

As long as three different points are determined on the two maps, Yang Ji can basically find the location of the ancient cave of Nongsang in the former dynasty on this map of Langya of the Han Dynasty.

"Langya City can't be used as a basis for positioning, and the official road is not successful. The time of the previous dynasty is completely different from the present, and the current city may have been a wasteland in the past. ”

Yang Ji said secretly in his heart. The outstretched index finger wanders through twisted, intricate lines. These distorted lines are like a constantly changing mountain and stream in Yang Ji's eyes.

Langya County is close to the sea, and the constant collision and squeezing between the sea and the land will cause earthquakes. In Langya County, earthquakes are not too frequent, but there are always one every few decades.

Therefore, more than ten years ago, when Pingchuan City suffered a catastrophe in the underworld, the imperial court covered up the truth and said that it was an earthquake, and no one suspected that this was the reason.

In the Langya County Chronicles, these earthquakes have long been recorded.

When Yang Ji used to read books, he came into contact with this record. And the earthquake is precisely the cause of the vicissitudes of the sea and the change of the land.

More than 1,000 years have been enough for the topography of Langya County to change a lot. This has caused a lot of trouble for latecomers like Yang Ji.

Yang Ji frowned and didn't say a word, constantly trying to discern what could be connected in these complex, twisted lines.

"Mountains and rivers, there is no way to use them as a basis for identification......"

Yang Ji's brows furrowed tightly, it was not easy to determine three unchanging points in two different maps.

Yang Ji pondered for a long time, looked at the two small maps in front of him attentively, and remained motionless.

"...... of Hirakawa Castle"

Yang Ji had a flash of inspiration in his mind, and suddenly remembered Pingchuan City, "Although Pingchuan City did not necessarily exist in the previous dynasty. But outside Pingchuan City, there is a huge space-time vortex that runs through the underworld. (To be continued......) R1292