Seeing a secret passage under the entrance of the cave, Li Jing could no longer remain reserved, she suddenly realized that the matter was important, hurriedly retreated to the side, and called to the liaison in her ear:

"Yang Kai, Yang Kai...... Hey......"

She shouted a few times, but there was no response from the liaison.

"The cave is too deep, there is no signal!" Li Jing glanced at the cave by the light, quickly turned around, and instructed another agent at the scene, "Ah Yong, this way, you go out to find Yang Kai now, call the headquarters to apply for support!"

"Okay!" Although the agent was still in a state of surprise, he still followed Li Jing's command and hurriedly ran out of the cave.

"Xiao Hang!Team Leader Zhao!" Then, Li Jing gestured with a pistol, which means that we can go down and arrest people now!

Xiao Hang couldn't wait for a long time, and after Li Jing signaled, he was the first to jump into the hole.

Xiao Hang's movements were agile, and he stepped lightly on the concrete slab in three or two clicks. At this moment, the internal combustion splitting machine that had been brought in before fell to the side, and there was still a lot of dust at the entrance of the cave.

For the sake of prudence, Xiao Hang leaned down and first observed the secret passage at the bottom, and after finding that there was no danger, he waved his hand to Zhao Yu and the others.

Zhao Yu glanced at Cui Lizhu, Cui Lizhu was also too excited for a long time, and hurriedly nodded at Zhao Yu. So, Zhao Yu also took the pistol and climbed down the edge of the cave with Cui Lizhu.

Immediately after, Li Jing also followed from the other side of the cave.

Due to the small area of the cave, Xiao Hang dodged and jumped into the secret passage below without making a sound. When Zhao Yu saw Xiao Hang go down, he also reached out and grabbed the concrete and entered the secret passage.

As soon as he entered the secret passage, there was a cold and damp breath on his face, and Zhao Yu was worried that the air here was not circulating, so he immediately turned on an invisible detector that could detect air.

Just when the detector was detecting the air, Zhao Yu had already seen the general situation of the secret passage clearly through the faint light coming from above. However, the secret passage is 3 meters wide and about 2 meters high, and the walls and floor are ground with cement, which is very similar to an air-raid shelter. In the upper corner of the wall there is a light bulb from the Anti-Japanese War era, and there are black wires connecting the bulbs.

Looking at the ground, there is a groove for drainage at the corner between the two sides of the ground, and on the ground in the middle of the secret passage, there is a track that can only be found in a mine!

Although there is not much to see as far as the eye can see, through various indications, this is likely to be a military fortress during the anti-station period!

Wow......

Zhao Yu exclaimed in his heart, could it be ...... Is this military fortress hidden in the mountains the place where the secret service has been searching for treasure for more than 80 years?

Little Japan ...... What a surprise! There is such a place built near the Fortress of Yishan? It seems that ...... Cui Lizhu may have really guessed correctly!

I strangled a granny bear...... Thinking of this, Zhao Yu couldn't help but feel his blood boiling, and he couldn't help but think in his heart, could it be ...... Are the hundreds of tons of gold, and the priceless treasures, hidden here?

That's ......

During the observation, the detector came with the results, and there was no problem with the air quality in the secret passage.

But...... Although there was no problem with the air, Zhao Yu still noticed two things.

The first thing is that he looked at the sides of the secret passage, but he didn't see any trace of the two people before!

It stands to reason that those two people have not been down for a long time, and if they have lighting equipment, they should not be invisible. I don't know, is it that the secret passage is not straight? The two of them have already turned somewhere else?

But when they saw that there were roads on both sides of the secret passage, they did not know which direction they were going.

In addition, Zhao Yu looked up and noticed the broken gap again. It was just above the passage, and since the roof of the passage was made of concrete, the two had only used an internal combustion splitter to break through the roof.

The location is so accurate, so to speak...... Those two must have detailed information about the fortress in their hands......? How did you get the information?

At this moment, Li Jing had also gone down to the concrete layer and was entering the secret passage through the gap. Seeing this, Xiao Hang hurriedly greeted him and stretched out his hand to Tuo Lijing.

Ay?

When he raised his eyes, Zhao Yu noticed that something seemed to be wrong with the broken gap in the concrete...... Before...... That kind of internal combustion splitter...... If it's a notch that has just been split, can you split such a large piece?

Although Zhao Yu is not very knowledgeable about this kind of professional rock crushing, he feels that in terms of time, it seems unreasonable!

Don't forget, they came in after the two suspects, such a big gap, can it be opened with a split machine in a few clicks?

It seems like......

Ay?

Who knows, just when Zhao Yu was in doubt, a strange sound suddenly came from above the entrance of the cave. In the next second, I saw a black ball, which suddenly rolled down from the hole!

Yes?

It was a palm-sized black ball, and there were many holes in the sphere like a honeycomb......

Just when the black ball suddenly rolled down, Li Jing, Xiao Hang and Cui Lizhu were also surprised and completely unexpected.

If you want to talk about the reaction, Xiao Hang is the fastest, he saw the black ball rolling down, and immediately shouted "not good", and then quickly took Li Jing to lie down and pressed Li Jing under him!

Although Zhao Yu's reaction was not slow, but in such a flash of light, he still didn't have time to open props such as body armor, so he could only instinctively turn around and lie down on the ground......

Burst......

As a result, when the black ball landed, many flying needles erupted from the many holes!

Tuk Tuk ......

Flying needles shot indiscriminately, under such a large range of sprays, Zhao Yu and the four of them were unavoidable, and they were all shot by flying needles.

Zhao Yu not only felt a pinprick pain in his back, but even a flying needle pierced his ear!

Yes......

Zhao Yu was in pain, and reached out to pull the flying needle off his ear, and blood suddenly flowed out of his ear.

This needle ......

Zhao Yu was trying to see what the flying needle looked like, but the electric light above the entrance of the cave suddenly went out, and the secret passage suddenly fell into darkness!

Da Da Da ......

Who knows, in the dark, two more things rolled down from the hole, and when the things landed, Zhao Yu suddenly smelled a pungent smell!

At this moment, the detector in his head suddenly sent a message, a large number of chemical symbols appeared on it, and a red alert sounded!

Although he didn't know what those symbols were, Zhao Yu knew very well that those were definitely not good things......! The flying needle that shot me just now must be ...... It's all ......

I click!

As soon as Zhao Yu thought of this, he immediately felt dizzy, his eyelids were heavy, and he was drowsy......

Not good!

Must have been anesthetized!

At the critical moment, Zhao Yu hurriedly beat his spirit and used the invisible antidote and the invisible respirator together!

The system props were extremely powerful, and when the antidote was used, the anesthetic in his body was immediately dissolved, and the feeling of drowsiness immediately dissipated.

In order to be able to see things clearly, he quickly used an invisible night vision device, and only then did he see that the secret passage was already covered with a thick fog, which could undoubtedly cause people to fall unconscious!

Ahem...... Ahem......

Next to Zhao Yu, there was the coughing sound of Xiao Hang and Cui Lizhu, Zhao Yu wanted to go over to help them, but suddenly heard a rush of footsteps from directly in front of him!

He hurriedly looked up, but saw two tall men walking side by side from the depths of the secret room, these two men had pistols in their hands, but on their faces, they were wearing gas masks!!