Xu Ran guessed that the small hole as thin as a needle's eye should be a keyhole, and that thing should be used to open the door.

He tried to get the robot to poke a needle-thin probe into the hole, but found nothing out of the ordinary, and no movement was caused.

According to the scanning of the pinhole probe penetrated by the robot, there is still a layer of metal of unknown material inside, and there is also an electromagnetic interference, which will make the picture captured by the probe very blurry, and the structure inside cannot be detected.

However, just observing the characteristics of the space, the base of the mysterious altar is still hollow, not solid, and what is inside cannot be detected.

And some of the textures on that door are related to Master Zhending's sacrificial texts, Xu Ran has not studied much in this regard, and there are no more references, so there is nothing to be done about it.

However, in the materials that the teacher Song Wenli gave to Xu Ran, he did not mention the situation of this mysterious altar, nor did he mention the sacrifices on the altar and those texture features like circuits.

Maybe Luo Hongtao and the experts in the Huojia expedition team will have a collection of materials in this area.

On the whole, after Xu Ran's investigation, Xu Ran felt that this altar didn't seem to be simple, not to mention that he had magnetic field activities nearby, but he himself had a mysterious color, which made people's hearts unspeakably weird, as if there was really no way to explain what that weirdness was with scientific methods.

Maybe that has to do with the occult stuff.

But next time I will come in with Huo Si Fal and them, that time is a pure archaeological exploration, and Huo Si Faer has a lot of information in his hands that Xu Ran does not know, and he must solve some of the hidden mysteries that Xu Ran does not know, and at that time, Xu Ran will also witness the exploration and discovery process of the expedition team as a visitor.

Now, Xu Ran's main goal is to retrieve this star core meteorite, which is very important to him, and the others are secondary, after all, he has no relevant reference materials in his hands, and there will be no major discoveries here if he explores and investigates.

It's just that this mysterious altar will teleport Xia Tanhe and Tan Nian to another mage altar outside the ancient tomb, and Xu Ran still wants to know about some of its functions.

So, Xu Ran took the robot to the altar.

Sure enough, the moment Xu Ran walked onto the altar, he felt that the magnetic field around him quickly underwent subtle changes, and at the same time, a strange power began to emerge from the bottom of the altar.

Moreover, from the moment that wonderful power was generated, Xu Ran suddenly felt a throbbing in his heart, and at the same time, a mirror with a round shape like glass rose in the middle of the altar, which was similar to a kaleidoscope, and there was a faint halo around the mirror.

The moment Xu Ran looked at the mirror, he was also looking at himself reflected in the mirror, and an inexplicable suction force would be generated at that moment, as if to suck Xu Ran into the mirror, and at the same time, Xu Ran couldn't help but have a strange hallucination in his mind.

That kind of hallucination is very peculiar, Xu Ran now has the ability of telepathy, and he can sense that the illusion is like the past and the future self, which seems to have rehearsed some scenes that happened in the past, as well as fragments of the future, which also made him a little in a trance.

Of course, this was just an illusion that was disturbed by his mind, and when he wanted to invade his mind, Xu Ran suddenly became alert.

At the same time, after he became alert, Xu Ran found that the mysterious mirror seemed to have softened, and a particle-like substance floated from it, which was a bit like some kind of dust or some kind of microorganism.

"Warning, invasive microorganisms have been found, for safety, please leave quickly!"

At this time, after the robot standing in front of Xu suddenly issued an alarm, it immediately alarmed Xu Ran, and it couldn't help but make Xu Ran slightly stunned.

But in this slightly stunned effort, the granular microorganisms floating in the mirror suddenly accelerated and floated towards Xu Ran, as if they wanted to burrow into Xu Ran's nostrils or mouth.

Swish!

At this time, the robot beside Xu Ran quickly opened the purple light shield.

When the granular microorganism floated over and was blocked by the purple light shield, it was attacked by the purple light energy, and the particles quickly began to scatter on the ground, like a very fine grain of sand.

However, what looked like a fine grain of sand turned out to be a more invasive microorganism, which was somewhat unexpected.

After Xu Ran, who had palpitations in his heart, retreated from the altar, he couldn't help but be a little shocked when he looked at those tiny particles, he didn't know what it was, but that thing could actually make him have a kind of mental interference, make him in a trance, and at the same time it could also create a state of illusion for people.

Fortunately, the robot detected that the thing would be unfavorable to Xu Ran, so it immediately took preventive measures to allow Xu Ran to avoid inhaling that kind of microorganism in time.

It's just that Xu Ran suddenly had a very big question, that is, after he went to the altar, the altar also reacted, why didn't he teleport him to another mage altar outside the ancient tomb as soon as possible?

Could it be that Xu Ran wanted to inhale that kind of microorganism into his body, and use the influence of that microorganism on him to let him go out through the right path in the state of illusion?

After thinking about it carefully, Xia Tanhe and Tan Nian had told some of the relevant details that they were teleported out by this altar, as if they didn't talk about the various experiences and feelings after going to the altar, but only mentioned that they fell into a coma after going to the altar, and when they woke up, they had already gone to another altar.

So what happened during the period when they were in a coma, Xia Tanhe and Tan Nian didn't make it clear, they only said the result.

But now that Xu Ran has personally experienced this strange altar, he has found that this altar is not simple, and even hides some potential dangers, and there are too many things in it that people can't understand with common sense.

Since the robot prompt might have an effect on him, Xu Ran didn't plan to take that risk, so he had no intention of cooperating with the altar again.

Xu Ran asked the robot to collect a little bit of the particles that were blocked by the shield as a specimen, and at the same time let the robot stand up and experiment.

As expected, after the robot stood up, only the surrounding magnetic field changed, but the altar itself did not react at all, and the microorganism did not appear again.

However, those magnetic field changes can be used as a guiding force field for Xu Ran to teleport at a fixed point, and Xu Ran didn't plan to take any more risks, so after using the space key to locate it, Xu Ran disappeared in place with the robot.

The next moment, Xu Ran and the robot successfully appeared in the storage center of the second-hand market through fixed-point transmission, and the fixed-point transmission was very successful.