Just as Zhao Yu was worried before, about the disappearance of the exploration team, it seems that he has really fallen into a dead end, and he has no clue.

He looked at the expedition logbook several times and found nothing suspicious.

There were no torn pages, no traces of smearing, and the work of the exploration team was normal and there were no accidents.

In order to make sure that there was no problem, Zhao Yu even personally checked the latest exploration well opened by the exploration team, but there was nothing in the exploration well, which was consistent with the exploration log.

According to Zhao Yu's understanding, including the two Tarstani security guards, all 12 exploration team members are innocent, have good backgrounds, have no bad habits, and have not had contact with any lawbreakers......

Looking at the survey site, in the past seven days, Zhao Yu has traveled to almost every corner near the base, and has also tried a variety of props such as footprint recognizers and stealth trackers, but still found nothing.

As for the suspicious vehicles, Zhao Yu, Bian Dong and others watched all the surveillance videos of the day that could be found nearby, and they also found no suspicious signs.

It's weird, it's true!

At this moment, Zhao Yu was sitting on a pickup truck near the base, looking at the sunset over the wasteland in the distance depressedly, feeling a sense of loss in his heart.

He was thinking about whether he should apply to his superiors and transfer his team to help.

However, he himself was not optimistic about this proposal. Because in the past seven days, he has had video calls with Miao Ying, Zeng Ke and others almost every day to discuss the case with them.

Although the team members are not around them, they are no different from working in the field. Everyone helped Zhao Yu put forward a lot of constructive opinions, but they were all rejected in the end......

Gee......

The afterglow of the setting sun reflected on Zhao Yu's face, but Zhao Yu didn't feel any warmth, and in another ten minutes, darkness was about to envelop the entire wasteland, indicating that another day had passed.

For such a long time, he was really worried about the safety of the exploration team.

Through the investigation, Zhao Yu can know the family situation of each exploration team member, their relatives, wives and children, and the whole family are waiting for their safe return.

But I've been checking for so long, but I haven't found any clues, I'm really ashamed, ashamed!

Before coming, he swore that he had promised Director Jiao, but now it seems that alas, ......

Between lamentations, Zhao Yu suddenly felt heavy under his abdomen and wanted to let go of "water".

So, he jumped out of the pickup truck, turned to the outside of the pickup truck, unbuckled his belt, and prepared to settle on the spot.

This is located in the wasteland, of course, there is no need to build any toilets for the exploration team, and all personal problems are just to find a place to solve.

Rushing......

Probably out of habit, Zhao Yu faced the pickup truck and put all the water on the wheels of the pickup truck......

However, while he was leaving it away, he suddenly saw a small hole in the ground next to the tire.

The small hole looked very inconspicuous, especially when the sun was about to set, and if you didn't look at it, you wouldn't notice it at all.

Men have a natural naughtiness, and Zhao Yu is no exception, when he saw this small hole, he subconsciously turned the "muzzle" and poured it all into the small hole......

However......

After Zhao Yu finished releasing the "water", his brows wrinkled unconsciously.

Ay?

No, I don't have a lot of water, this little hole ...... Why isn't it full?

This......

In an instant, Zhao Yu's heart moved, and he suddenly realized a problem:

This little hole...... What is it for!?

The ground here is a solid earth, gravel and gravel structure, and it is not easy to make a small hole in the ground, at least with tools such as hammers and awls!

Moreover, I have a lot of water, but I didn't fill this small hole, which means that the small hole is very deep!

Such a deep hole seems to be even more difficult to excavate, right?

This is......

Zhao Yu hurriedly raised his eyes and looked around, and for the first time, the idea that popped into his mind was that someone should have set up a tent here, and this was left behind by setting up a tent.

But...... Right next to the base of the exploration team, who would pitch a tent here? Is it necessary?

And......

Zhao Yu took two steps into the distance, and soon had new doubts, if it was to set up a tent, it was impossible to make only a small hole, then within a few meters nearby, there would inevitably be another small hole.

However, he took a closer look at the nearby ground, but found no other potholes.

Ay?

It's weird, this little hole...... What exactly is it used for?

Tethered horses?

Wrong...... Tethered horses and leashed animals, at least find a leeward place, right?

This is a relatively open and open place for the exploration team's base, do you want to tie the beasts here and drink the northwest wind?

Still...... What else is the reason?

While Zhao Yu was thinking about it, the sun finally set, and the earth fell into darkness in an instant, and the small hole under the car soon fell into a shadow.

However, at this time, Zhao Yu was already interested, although he didn't think that this small hole must be related to the case, but under curiosity, he still wanted to find out, what was this small hole for?

Thinking of this, he called Bian Dong on the walkie-talkie and asked him to bring local technicians to check it out. While turning on his invisible flashlight, he crawled on the ground and took a closer look......

……

Ten minutes later, with the efforts of Bian Dong and several local police officers, they pushed the pickup truck aside.

Under the bright light, everyone could see the small hole more clearly.

"Officer Zhao," Bian Dong said, pointing to the local officer, "they said they didn't know what this little hole was for.

"No......" Zhao Yu waved his hand and asked with a frown, "Is it because of the sandstorm and the wooden stakes that were built for the camp?"

"No......" Bian Dong pondered, "there are no sandstorms on the Taouzi Plateau, and there will be some strong winds, but ......," he said, pointing to the camp in the distance, "the camp is so far away, even if it is tied to a stake, it shouldn't be here!"

"Besides, the camp is all prefabricated houses, and if the bolted wooden stakes are also very thick, this hole is obviously smaller!"

"That's right!" Zhao Yu nodded, and said, "It's often windy on the plateau, and such a small hole, if it hadn't been dug recently, should have been covered by dust or gravel, right?"

"That's right," Bian Dong nodded, "In other words, this little hole is the latest hole......! The prospectors are playing golf, or brackets or any equipment to hit this hole?"

"Well, there is a possibility of this," Zhao Yu instructed...... "Well, let's split up and look for it and see if there are any similar small holes!"

"If it's really any equipment, it can't be just one!"

"Yes!" Bian Dong nodded, hurriedly mobilized all the police officers, and began to turn on flashlights one after another, looking for them on the spot......

As a result, after only searching for more than ten minutes, someone immediately raised his hand to signal, and the person found another identical hole more than ten meters away from the small hole......