In the wee hours of the morning, most people have fallen asleep.

And for some people who are engaged in research, they don't care about the day, and for the sake of interest in research, they can explode their livers to the point that ordinary people can't reach.

The second secret expedition organized by the Fire Family was carried out in secret at the cost of the collapse of the Cai family's business empire, which attracted the attention of the vast majority of the entire Xia City and even the whole province.

In this operation, Song Wenli, Luo Hongtao, and even the experts of the master all participated.

However, they did not participate in the on-site exploration and investigation in person, but participated in it by remote control, and made a comprehensive judgment through the real-time transmission of information from the expedition team.

In addition, even the master and Luo Hongtao have already experienced an expedition, and they also know some of the situations in the main sacrificial temple of the Nashaba tribe in more detail.

Therefore, under their command, the expedition was very smooth, and the three experts also obtained a large number of reference materials through this expedition.

Although after the expedition ended, they handed over some of the integrated materials to the Fire Family, but in private, the three of them had a tacit understanding and still copied and kept a copy.

This time, with the full support of the Huo family, the information they obtained was also very detailed and comprehensive, and they also obtained important clues from it that they had longed for but never had a clue.

With these clues, it has played a very important role in their research on the mysterious Shigan River.

It's just that, although there are important clues, even the seemingly inconspicuous stubborn stone that the master went in and quietly picked up in private last time stumped the three of them.

There was something in the boulder, they had already discovered, but the stone was so strange that it was difficult to open in any way.

And it also contains a strange power fluctuation, once people have been in contact with it for a long time, they will be affected by it, become blurred, and even have memory gaps, forget some things that happened before, and be mysterious and bizarre, even if they are experts and professors, the three of them can't tell how that thing was formed.

However, in view of the previous experience of Xu Ran, Luo Hongtao and Master Lian teaming up to explore the mysterious ancient tower and encountering the energy soul, the three of them really had nothing to do with that stone, so they thought of Xu Ran.

So, even the master didn't care that it was late at night, so he directly called Xu Ran and asked Xu Ran to come over to help.

For this kind of thing, Master Lian didn't say it explicitly on the phone, but Xu Ran knew that their research must have encountered a problem, so he would ask him to solve it.

So, Xu Ran rushed to the Rong'an family area where the three of them were located overnight.

As a professor of history at Xiacheng University, Luo Hongtao got a house allocated by the school in the early years.

However, Luo Hongtao and his family generally do not live there, but use it as a place to store some materials and conduct some historical and cultural research, except for a few leaders in the school, the average person rarely knows about that place.

Nowadays, this family area is relatively old, and there are not many university professors living here, and most of them are rented to graduate students.

However, the public facilities in this family area are well maintained, the road surface is relatively smooth, and the street lights are often replaced and maintained.

After Xu Ran came to the family area, he casually found a parking space to park the car, and then walked to a unit building separated by two rows.

Luo Hongtao's home is on the first floor, and after Xu Ran rang the doorbell, it took a while for someone to open the door.

"Xiao Ran, you're here, come in!"

After Luo Hongtao opened the door, the whole person looked a little tired, and staying up late every day also made his mental state not very good, and his eye circles were also a little blue.

After Xu Ran entered, he saw Song Wenli holding a copy and flipping through it, and at the same time holding a piece of cake in his hand while eating and reading, he seemed very devoted.

"Teacher, your body hasn't been thoroughly conditioned, why don't you cherish it!"

Xu Ran saw that Song Wenli was very submissive, so he walked over and complained.

Song Wenli raised his head and saw Xu Ran, and said, "Xiao Ran, you came just in time, help us see what is going on with that stone, that is a very important clue for us to study the Shigan River......

"Oh, where is the stone?"

After being distracted, Xu Ran was also interested, so he followed Song Wenli to a table.

The table was wide, long, with piles of materials spinning around on it, as well as a few broken things that looked like random rubbish littered on the side of the road, such as stones and bones.

However, since it will be picked up by Master Lian and Luo Hongtao for study, it shows that those things still have research value.

Moreover, Xu Ran took a closer look and found that the bone did not look like human bones, but it was similar to human bones, and it did not look like the bones of animals or beasts.

In front of the table, I saw Master Lian holding a magnifying glass, studying and analyzing a pile of stone foam, and he also seemed very devoted.

After Xu Ran came over, Master Lian put down the magnifying glass, took off the reading glasses, joined Song Wenli and the others, and led Xu Ran to a small room inside.

The small room contained a number of instruments, one of which was topped by a plastic disc with a metal lid the size of a bowl.

Master Lian walked to the table and picked up the small bowl, and Xu Ran saw that there was a stone tightly wrapped in plastic wrap on the plate.

Xu Ran had some impressions of the stone that Master Lian risked his life to pick up when they went out from the underground passage under the pyramid building of the main priest temple, and when the gate collapsed.

At that time, Xu Ran didn't pay attention to this stone, Huo Sifar was attracted by the underground lake that he had explored, so naturally he didn't pay attention to the stone that even the master hid.

This stone seemed to be very cold, and when Xu Ran approached, he felt a cold feeling surging, and at the same time, it was filled with a relatively violent energy fluctuation.

At the same time, when Xu Ran approached, he just observed it closely, and before he reached out to touch the stone, he suddenly felt a surge of energy gushing out of the stone, as if he wanted to invade Xu Ran's spiritual universe, which seemed very sudden.

Moreover, Xu Ran was surprised to find that his spiritual universe seemed to have a violent reaction to the energy contained in this stone, which was somewhat unstable, as if the energy contained in the stone was about to create a huge black hole and wanted to swallow his spiritual universe.

Xu Ran's heart tightened, and he hurriedly resisted with the power of his heart, and only then did he resist that force.

Wiping the beads of sweat on his forehead, Xu Ran looked at the strange stone and couldn't help but sigh: "What a stone from the evil sect!"