Rong 13 and Lan Zui frowned, and looked at a few more pillars, all of which were exactly the same carvings. As far as common sense is concerned, the carved totems of a place can reflect the local folk customs and worship insects, most of which are related to poison.

Thinking about the Northern Yan Kingdom Sect in the past, which was famous for refining elixirs and Gu arts, and then thinking of the weird Gu worms that Su Lingyu had trapped Jun Yihuang and Helan Fu to death that day, Lan Zui suddenly became half afraid, half resentful.

Before he had time to think about it, Jun Yihuang next to him suddenly patted Lan Zui on the shoulder, pointed to the distance and said, "There's something over there." ”

Lan Zui looked at Jun Yihuang along the finger, and the blue light of the pillar was dimly reflected in the distance, and he couldn't see the reason at all. The only thing that can be seen is that the column is not as neatly arranged as in other places, and it seems that a few are missing in between.

"It's like...... Flying stone car? Jun Yihuang's eyesight is rarely limited by the darkness, but that place is really far away, and there seems to be a fog floating in front of her, so she can't be sure.

"Flying stone car? Is there a city wall here? Listening to Jun Yihuang, Rong Thirteen and Lan Drunk were speechless at the same time. The two of them knew that this thing was one of the necessary weapons for siege in ancient times, and they had seen it in ancient books and on TV, but they never expected to see this thing underground.

"Is it possible...... The Northern Yan people actually built a city underground? Lan Zui was stunned for a moment, and after seeing the ancient battlefield in front of her, she also guessed that the people in the city on the ground were likely to move and hide in this underground when Beidi attacked, but she couldn't imagine that there was a city deep underground, and she couldn't help but show a look of disbelief, and she couldn't care about the tangled pillar anymore, and ran in the direction pointed by Jun Yihuang quickly.

"You wait!" Lan Zui was pulled by Rong Thirteen and Jun Yihuang left and right, and Rong Thirteen reprimanded, "I can't see anything clearly over there, how can you be reckless!" ”

After saying that, Rong Shisan took out the signal gun he had been carrying with him, and shot it in the direction where the light of the stone pillar was missing.

The fiery red light dragged out along the muzzle of the gun, and flew into the air and exploded, instantly bursting into the air like fireworks, and also dispelling the darkness below in a short time.

But no one noticed this short but beautiful fireworks, even Bai Suhe and Meng Zheng in the rear were stunned.

Under the red light, you can see that there are many stone pillars missing in that place, and in their place are several behemoths that are almost the same height as the stone pillars, with two wooden wheels of equal height in front and back, and a thing with a handle at least three or four meters long and shaped like a spoon hanging its head back, even after such a long time, it still stands firmly on the ground.

The red light not only dispelled the darkness, but also the layer of mist that enveloped the stone pillars. Far away from the catapults, a row of walls rises majestically, and even if they are far away, you can still faintly distinguish the orderly battlements and protruding enemy towers on the walls.

"Really...... Building a city underground...... Rong 13 pinched his face and knocked on Lan Zui's head again, "I'm not dreaming, am I?" The Northern Yan people are also too awesome! ”

He and Lan Zuida learned a lot about the structure of the mausoleum, and of course he also knew how difficult it was to build the underground project. A medium-sized mountain mausoleum, even if it is complemented by natural topography, will require at least tens of thousands of people to complete the construction of ten thousand years of hard work.

But looking at the momentum of that city wall, I don't know how many times more formal than the city wall on the ground, and most of this area is still hidden in the dark. The city walls are like this, and the city hidden behind it will not be much worse, how can this be compared to ordinary princely tombs?

The flare did not last long, and in the time when everyone was stunned, it had already flashed its brilliance and quickly dimmed. Ahead of him, he was once again in the night.

Silent.

There was a long silence.

Bai Suhe and Meng Zheng came to Lan Zui and the three of them with the almost stupid Reyimu and said, "It seems that what is on the ground is just a virtual city that hides people's ears, and the real border fortress in Beiyan should be this one in the mountains." ”

Lan Zui held his breath until now before he spit it out, and looked at Bai Suhe with extremely complicated eyes: "Sister Bai, I just think that the quicksand trap above is a fart now, you ...... No, your old family, it's too tough! ”

"You worship the wrong person, Helan Fu is over there." Bai Suhe coldly pointed at Jun Yihuang and said, "You are still poor at this time, what are you going to do?" ”

Before, they were afraid that they would not be able to find the exit, but when they saw that there was a flying stone cart here, their hearts immediately settled down a lot. Although the stone cave coming down from the platform is large, it does not allow catapults to enter and exit. Since Beidi can transport catapults in, there must be another place that leads directly to the ground, and the catapults are bulky, so that passage must be nearby.

"There are two ways. We've worked so hard to get here, and we've finally found the main city, and we can't just run for nothing. We are going to this city, but the top priority is to go up and rescue Rong Jiu, and we have too few supplies and incomplete equipment, so it will definitely not be enough for us to spend. It was far away just now, Xiao Drunk and I went over to the flying stone cart to take a look at it again, Sister Bai, Sister Jun, you are looking for an exit nearby, let's go up to find Rong Jiu, rest and then come down. ”

It is unlikely that there will be a zài organ on the ancient battlefield of Ma Pingchuan, and Rong Thirteen has no objection to this arrangement, and the group is divided into two teams and dispersed.

Lan Zui and Rong Thirteen walked in the direction of the stone cart. Along the way, there were debris everywhere, and when they came to a place where they could see the stone cart clearly, arrows appeared scattered on the ground one after another, and the shafts and feathers of many arrows were rotten, and the arrows were still deeply rooted in the sand, which shows the strong power of these arrows in those days.

Since he knew that there was a city wall ahead, he was no longer surprised to see the arrows all over the ground. In ancient siege warfare, the main weapon used by the defenders of the city to deal with the attackers was the bow and arrow. It's just that what makes the two strange is that mottled black marks began to appear on the ground, which should be the blood stains that were shed by the arrows of the soldiers of World War I. There are a lot of bloodstains, but there is still not a single corpse, could it be that those corpses have evaporated out of thin air?

"I guess Beidi took the corpse away when he retreated." Rong Thirteen guessed about Lan Zui's question, "Hangul once said that this city was called Karangted Ted in ancient times, and it was also called the Dark Devil's Land. Beidi and Beiyan are adjacent to each other, and their beliefs may be similar in both countries. You didn't see how jealous Reyimu was when Meng Zheng made Reyimu swear that his soul would stay in this place forever, which shows that they were very taboo about this. I don't think the Beidi people would be willing to leave their people in this place to become servants of the demons. ”

Rong Thirteen's analysis is very reasonable, but Lan Zui is deeply worried. According to Rong Shisan's analysis, Beidi should have been orderly and had plenty of time to clean up the body when he left. Only the victorious side has the time to do these things, so this dungeon in Beiyan has been breached? That Xia Ruoqing's corpse...... I don't know what's going on, the war-torn city is the most chaotic, and Jun Yihuang's soul doesn't know if it can be found.

Near the stone car, there are also bed crossbows and other siege weapons, but these things are much smaller than the stone car, and they were too shocked just now to pay attention. The wood next to the stone cart and the bed crossbow was filled with dense arrows, like a alien hedgehog covered in thorns. There is almost no foothold on the ground further on. When they arrived, the two of them were in the unknown shallow mist, and they could vaguely feel the obvious damp and stuffy heat ahead.

The two of them had been holding their breath since they approached here, and after a while, they felt that their skin did not feel anything unusual, and the two of them took a cautious shallow breath, and there was no smell in their noses, only a hot flush rushed into their noses.

"What's that?" The air doesn't look like it's poisonous, Lan Zui sniffed it twice, and felt that this feeling of dampness and heat was very familiar, how could it be a bit like the feeling when he went to the hot springs?

The nearest row of stone pillars is already behind, and the front is dark and full of arrows, which is really difficult to walk. The two flashlights were divided between Bai Suhe and Jun Yihuang, and Lan Zui could only break three glow sticks and throw them forward with different strengths.

The two glow sticks landed in the gap between the arrow shafts, illuminating a small part of the ground, but the farthest one flickered, piercing the fog and instantly falling into the darkness without a trace.

"Tsk, not only have walls built, but also trenches have been dug." Lan Drunk snorted and muttered.

Rong 13 was about to answer, when footsteps suddenly sounded behind him. When the two turned around, they saw two beams of light swaying and approaching, and as soon as they met them, the one in front was Jun Yihuang.

Jun Yihuang's face was always pale, but his expression was extremely ugly. Lan Zui was just about to ask, but Jun Yihuang had already spoken: "Beidi sealed the exit when he left, and he couldn't get out." ”

Lan Zui and Rong Shisan's expressions immediately changed greatly, and Jun Yihuang continued: "Exploded with gunpowder, the cave walls have collapsed, and it is impossible for us to move away with this little manpower." ”

Bai Suhe and Meng Zheng behind Jun Yihuang nodded silently, but Reyimu and Sabir were vain in their steps, their eyes blank, like prisoners who had just been sentenced to death, and they couldn't give up.

There was a long silence.

After a long time, Lan Zui sighed and said, "It seems that we don't want to enter the city this time." People say that the three caves of the cunning rabbit, this Beiyan has built a huge city underground, and it is impossible to leave only a passage in and out of the city, I estimate that there should still be in the city. It's just that Beidi broke the underground city of Beiyan at that time before collecting troops and leaving, I hope they don't blow up all the other passages. ”

Lan Zui said that, but Beidi can blow up one place and blow up the second, this reason couldn't be simpler. But it's still a hope, so I can only watch as I go.

Although there is a trench ahead, Beidi can attack this city back then, and he must have built a road on the trench, so there is no need to worry about this problem. A few people took a breath, and were about to find the way through the guò trench, when they heard what seemed to be someone walking in the distance kicking the fragments of the road's armor, the fragments rolling on the ground, and a crisp jingling sound rang out in the silent space.