The thing that suddenly came out was bare like a mechanical piston, the top was hollow, and when it unfolded, there was a little green unknown non-living thing, and it didn't spread out like a metal blade.

There are several of these strange leaves, and they look like flowers that bloom suddenly, but a few of them have been missing, and they should have been taken down by the scientific research team for research.

The thing suddenly came out of the hole and attacked the robot, but the purpose of attacking the robot was not achieved, and the robot moved faster than the thing, directly stretching out a mechanical arm and clamping it to death.

After the thing was clamped, it wanted to retract and retract, but the force of the robot arm was also very strong, and it was stuck and could not move.

"Take two leaves as a specimen!"

Xu Ran observed the mysterious substance, and immediately gave an order to the robot, and another robot went up, waved its mechanical arm to jam two of the pieces, and then cut it fiercely, and the two leaves were taken off, and at the same time, it also carried a viscous resin-like liquid.

A small drawer popped out of the robot's body, and after carefully collecting the specimen, it released the piston arm, which immediately retracted into the hole.

Xu Ran asked the robot to take him to the vicinity of the hole, and he found a sign in the corner.

The robot picked up the sign and let Xu Ran look at it closely, and saw that the situation here was recorded on it, saying that what Xu Ran saw just now was a combination of machinery and biology, that is, non-living things, but it was not mechanical life, but a kind of machinery powered by living things, and this thing would also release a gas, which belonged to underground biogas.

In addition, the sign also records the movement of this thing, as long as you don't step on the protruding rocks when passing through this passage, it will not cause an attack.

In fact, to put it bluntly, these are a kind of complex mechanisms made up by ancient people.

With a hint, it was easy to do, and when Xu Ran asked the robot to pass according to his request, he did not touch the protruding stones, but walked through this half of the passage smoothly.

After coming from this passage, Xu Ran saw several dense large guillotine knives, each of which weighed hundreds of catties, and a few of them were hung up by iron cables, if they fell on people, I am afraid that they would be cut in half at once.

Underneath, however, there are some jacks that have been placed by the scientific research team, and the danger has been eliminated.

There is no need for Xu Ran to do anything here, after the robot passes the detection and finds the best clues, it passes very smoothly.

From there, after turning another corner, there was a stone gate with a jigsaw puzzle array on top of it, but now the stone gate was open.

After Xu Ran let the robot take it into the stone gate, it was a small house-like facility, and the space was about 180 square meters.

Here, Xu Ran saw some sundries left by some working groups that were not intended to be taken away, as well as some daily necessities and shelves and beds, presumably this should be a temporary residence and research camp.

After arriving here, there seemed to be no such biological wave interference, and Xu Ran came out of the robot's belly.

However, before he came out, Xu Ran vaguely heard the sound of running water, and followed the sound to the corner of the room, where there was an underground staircase going down, and the sound of water came from there.

Xu Ran didn't rush down to investigate, he guessed that it should be an underground river.

As expected, he walked a few steps and saw a map of the terrain on a wall hanging on the wall.

On that map, Xu Ran found where he was, and through the comparison of the marks on the map, the next section was the underground river.

"Make a copy of this topographic structure map, and use the guidance of the topographic structure on this map to carry out the next step of exploration!"

After receiving the command, the robot's electronic eyes flashed and recorded the diagram.

It's just that after Xu Ran took the robot out of this room for half a while, he suddenly found a huge cliff.

Looking down at the broken wall, there is a pitch-black abyss below with no bottom in sight, and on the opposite side is a topographic environment mixed with sand and stones.

Xu Ran looked at the broken wall and felt that it was not dug out by manpower, but should be naturally formed after the movement of the earth's orifice plates.

However, through the light, Xu Ran found some clues of abnormality from a hole in the opposite broken wall.

The holes looked to him like tombs, while some looked like half-collapsed dungeons, and he even saw coffins.

Looking at other places as a whole, it is like a large group of tombs, with different styles of periods, as the teacher once said, although this is a tomb of a general of the Han Dynasty, but there are also tombs in the style of the Han, Tang, Song and Yuan dynasties, giving people the feeling that they have gathered here from all directions.

But think about the topography of this sand sea ditch, in ancient times, it was a treasure of feng shui, and it was common for some generals or princes and nobles to choose to make tombs here, and the reason why most of them were concentrated here is probably related to the changes in the underground pattern here due to the movement of the earth's crust.

The gap between the broken walls is not very wide, and you can pass through it directly with a long wooden plank.

However, looking up in the middle of the broken wall, through the illumination of the light, Xu Ran was surprised to find the main cemetery palace of the general's tomb, and through the main cemetery palace, he could also go to the tombs on the opposite side.

It's just that why didn't they discover the place Xu Ran had walked through before? Or did Xia Tanhe and the others come in after they accidentally found out, and they also encountered events such as illusions and attacks.

Moreover, after the scientific research team came in, they actually made a temporary camp in the stone chamber, and it seems that they did not step out of the stone chamber to explore the other side of the broken wall outside.

No, Xu Ran felt as if he had overlooked something.

The previous places seemed to be equipped with very powerful mechanisms, but after the broken wall, these places were not too dangerous except for those tombs of different styles and periods, and it was completely unreasonable for the scientific research team to explore there.

But most of the topographic maps on the wall are near the broken wall, including the main cemetery palace, and the expedition team said that they had already carried out exploration investigations.

Since there is no scientific value there, why did the scientific expedition team make such diagrams and logos?

Xu Ran suddenly felt that when the scientific research team came in here to complete the scientific research work, they should have done something to a key place here, and the topographic map hanging on the wall was probably misleading, and they should not want the intruders or tomb robbers to discover the places they wanted to protect.

Thinking about it this way, Xu Ran felt that his guess was completely possible.

Because according to some of the experiences that Zhu Guodong told him, Xu Ran didn't encounter anything here, and the mysterious space that Xia Tanhe talked about, as well as the mysterious altar, there was no mark on the map of that place at all, so this was obviously a deliberate concealment by the scientific research team.

If Xu Ran didn't know these insider information, if he was just a tomb robber or explorer, then maybe he would have really been disciplined.