Helian Chengxian stayed outside the cave and guarded Luye Naga together with Gu Chen's trusted general Chi Zheng to prevent the retreat from being cut off. The hundreds of people who went deep into the void were led by Hucha Jing. The difference between advance and retreat was life and death, and there was no room for carelessness.

The entrance of the cave has expanded by more than ten feet, and now there is no crowding even if there are hundreds of people standing there. The soldiers from the Shu camp and the Chinese army cavalry lined up separately, and under the leadership of Zhongli Xi and Wen Tingyun, they cut the mountain and built the road. From top to bottom, it is estimated that it will take at least three people.

It is four hundred feet long. It is indeed not easy to find a way that can accommodate many people. However, if you just rely on ropes to go up and down, it is too risky. Once an enemy attacks, it is like the strange beasts of the Zhen clan that can travel underground. They cannot be connected head to tail.

Divide and encircle, this is a taboo in the art of war. It affects the life and death of thousands of people. No matter how worried Li Luo was about Gu Lianglei's safety, he would not dare to give an order rashly.

Looking at the boundless darkness outside the cave, he suddenly had an idea. If he flew out from here, he didn't know where he would fly to. Will it give years to memory, or would it give years to memory. Through this void and darkness,

If there is light again, will we see the scene when they built the Great Wall thousands of years ago? Is it spectacular? Is it shocking? Or is it disappointing?

Just when he was in a daze, a soldier from the martial arts camp hurried over. He recognized this person. His name was Ban Niu, a descendant of the famous Ban family in Dagan. Unlike other disciples of the Ban family, Ban Niu did not inherit the Ban family's secret weapon skills.

Instead, the inherited skills in the machinery are used in the space between heaven and earth, building bridges, digging rivers and canals, digging mountains and building roads, and all kinds of things. Among them, he is good at water conservancy, and he is a rare talent in the art camp.

The master of the Ban family used his skill in a big way, giving up exquisiteness and making more calculations. He borrowed the power of heaven and earth to perform the work of heaven and earth. In his words, if one method can be used, all methods can be used. He actually found a way.

, everyone in the world calls him the master of the Ban family, and he is unique. However, the title of the master of the class has really angered many people in the class. Why should a side branch of the Ban family who has taken a different approach be called the master, a disciple of the Ban family who openly competes with others?

Quite a few. Many years ago, Leng Bingyun visited Ban Niu's house and passed by. He drank a glass of wine and watched a play. Since then, no one in the Ban family dared to cause trouble to Ban Niu. I heard that later the head of the Ban family

The apple of their eye ran away secretly, but was finally brought back by Leng Bing. From then on, the Ban family recognized the title of Ban Niu, the master of the Ban family.

In the Shu camp, there are many disciples of the Ban family, all of whom obey orders from Ban Niu. Ban Niu has never paid much attention to profits, but he has a good reputation, otherwise he would not have joined Mu Tianlang in the first place and established a new school, which can be regarded as a member of the Shu camp.

scene.

"General, something has been discovered."

"What discovery?"

"My subordinates carefully searched the left and right sides of the cave and found some traces of the cave, but it's a bit strange."

"tell me the story."

Ban Niu perked up and spoke eloquently: "There are roughly two types of underground caves. One is caused by the displacement of mountains and rivers, such as the common saying that the earth cow turns over. The other is caused by water erosion, which has thousands of ditches.

There are ravines, rugged terrain with strange rocks, and an extremely complex cave system." Seeing Li Luo frown slightly, Ban Niu coughed in a hurry, "To put it simply, the general direction of water caves is relatively stable.

, if you take a bamboo raft all the way down the underground river, there won't be any big problem, but the cave with the shifting structure of the mountains and rivers is likely to have very ridiculous faults, and it may float to a certain place along the current, and suddenly it will be a hundred-foot drop.

The cliff is the result of a narrow escape."

"You mean there are water-eroded caves here?"

"Exactly." Ban Niu's eyebrows were elated, "This is what my subordinates found strange. I and my disciples found several caves and investigated them carefully. As the terrain became lower and lower, the structures in the caves also began to appear.

Changes have become more and more bizarre. The water cave has gradually replaced the original cave landscape. Although there are no traces of water now, there are still traces of stone waterfalls and water seepage on the cliff. On the surface, it is now

It is difficult to say whether the caves here predate the caves formed by the displacement of mountains and rivers, or whether it is the other way around. The system of these caves under Luye Naga Mountain is like a network, one layer inside another, extending in all directions, without any rules, and there is absolutely no hidden path.

The river channel allows people to go down. My subordinates boldly guessed that the mountains and rivers here undulated many years ago, forming the appearance of this cave. Then the underground river was formed, and then the underground river washed away the rocks here, leaving traces of water erosion.

Come down."

Li Luo was speechless for a long time, looking at Ban Niu who was in high spirits, and couldn't figure out a clue for a long time. At this time, Ban Niu lowered his voice: "General, if there is really a huge underground city here, it is underground."

Li Luo was startled, and suddenly a glimmer of light flashed in his eyes, and he finally understood the meaning of Ban Niu's words. This is Luye Naga, a giant city in the mountains... All signs indicate that the appearance of the giant city was most likely before Luye Naga.

, even if the mountains and rivers shifted and built up Luye Naga Mountain, how could there be such a huge water-eroded cave? The sequence is contradictory. There is definitely no river so big in Luye Naga Mountain that it can wash out underground river water caves extending in all directions.

"To wash out such huge water erosion marks, even if it is not a Kunjiang River, it must at least be like a trace of water. If it is underground, that's it. But we came in from the top of the mountain. According to my subordinates' rough calculation, we are far from the foot of Luye Naga Mountain.

There is a difference of hundreds of feet or even more than a thousand feet at least. Where does this water come from and where does it go? I can't figure it out, and this is what I find weird." After finishing speaking, Ban Niu fell into deep thought again.

Deeply suspicious, could it be that I guessed wrong? But how to explain the traces on the water-eroded caves? Is there really someone who is so bored that he traces the traces of underground river water on the walls of these countless caves one by one?

?

Li Luo understood his doubts and confusion, while Gu Chen and Hucha Dongchan were still confused and didn't know what they were talking about.

"Is this possible?"

"General, please speak. I am all ears."

Li Luo pointed at the void and pondered for a moment: "That's the north, let's say. If it's a vast sea, about the same height as Luye Naga, is it possible that it will look like what you said?"

Ban Niu was stunned and took a breath of cold air. Just as he was about to say something, his face suddenly stiffened, and then he became excited. After a while, he clapped his hands suddenly and shouted: "Why didn't I think of this! But!

, if it’s the sea, where did the sea go?”
Chapter completed!