Special Forces from Fire Phoenix

"In addition to poisonous gas research, there is also research on biochemical humans, but we have never been able to find these secret test bases."

Long Xiaoyun said: "I heard that when the Soviet Union attacked here, the Japanese hid in caves."

"These Kwantung Army's firepower has been suppressed, and they have been sticking to the cave. But the old man is also a ruthless person. He throws smoke bombs in, just like smoked mice. If one is smoked, one will die."

"There are biochemical humans?" Dong Ban asked doubtfully.

"I only found out about this news recently, and here is a cave that has never been exposed. Not only are we looking for it, but the Japanese have also secretly sent people to look for it over the years."

Long Xiaoyun said: "In the past, the 731 unit formed by the Japanese was led by Shiro Ishii of World War II. In its glory days, it had more than 3000 researchers, and tens of thousands of Chinese, Soviet, North Korean, and Mongolian prisoners of war and civilians were used as experiments. White mice were subjected to inhumane vivisection and biochemical experiments."

"I heard it was called Devil's Island, but just for the construction of Devil's Island, more than 10 people died, and it was completely obliterated after it was built.

"It's a pity that, as the most heinous biochemical base in World War II, it escaped trial, but no one can find it..."

The students turned pale when they heard that, shocked by that dusty history.

The soldiers of Dongsan were filled with righteous indignation. This is the evidence of Japan's crime, but they have escaped the judgment of history!

bang.

Suddenly the cave shook.

"what happened?"

Everyone was shocked.

Sudden.

Dong Er moved his nose, and an inexplicable smell penetrated his nostrils. Suddenly, his head became dizzy, his stomach churns, and he felt a little nauseous.

"Poisonous gas, there is poisonous gas, retreat immediately!" Dong Er shouted in shock.

: The climax is coming...

Chapter 119 The Prisoner's Dilemma, Bullets in the Dark

Chapter 119 The Prisoner's Dilemma, Bullets in the Dark

Due to the sudden change, Long Xiaoyun's expression also changed.

At this time, the sound of communication came from Long Xiaoyun's terminal watch.

"Colonel Long, we found a huge cave outside. There are artificial traps inside, but we can't go down." This is Zhang Lu's voice.

When the grenade exploded, rock debris splashed, revealing a dark hole.

"I really found something!"

Tian Guo was overjoyed and urged Zhang Lu to go up and investigate together.

When the two climbed up to the hole in the rock wall, they found the entrance of a corridor.

But this entrance is different from the previous ones. The previous entrances to the corridor are parallel, but this entrance is vertically downward.

Zhang Lu used a military flashlight to shine down, and the depth was unfathomable. The light source could not reach the bottom of the tunnel, so it was impossible to know the depth of the tunnel.

It is not so much a corridor as it is a deep well, which has been poured with concrete, and the surroundings are smooth, and there is no strong point to climb.

Tian Guo, who has rich experience, picked up a piece of gravel and threw it towards the center of the well.

"Did you hear the echo?" Tian Guo has been listening carefully, but can't hear anything, the echo is too small, it seems to be there, and it doesn't seem to be there.

"I heard something, about three seconds after you threw it down." Zhang Lu replied.

His body has been strengthened by the seed essence, and his hearing has also improved to a certain extent.

The propagation speed of sound in the air is about 340/, and the higher the temperature, the slightly increased the propagation speed.

This speed is too fast, and only counting the free fall of stones, the deep well is at least about 30 meters deep.

At such a depth, Flying Claw could barely penetrate.

"Do you want me to go in and investigate?" Tian Guo suggested.

"The situation below is unknown, and it is too risky to enter rashly." Zhang Ludao: "We can start from the tunnel before. I guess most of these tunnels are figured out."

"The brain is the light." Tian Guo praised: "How did you find out that there is a problem with the rock wall?"

"It's crazy, the rock wall is bare, and there are not many weeds!" Zhang Lu said casually.

Of course it's not fake.

Static photosynthetic early warning, if you investigate carefully, you will find clues about the carnage.

The corridor is sealed, and the remaining breath is concentrated in the corridor, so the decibels of the humming sound are extremely loud.

"Then what do we do now?"

"I'll talk to Long Xiaoyun first, report the situation, and see if they can find it here."

the other side.

Long Xiaoyun still came to remember to answer Zhang Lu, the poisonous gas had already begun to spread.

As a soldier, Dong Yi immediately ordered: "Shut your breath, the corridor is too small, don't panic, and retreat in an orderly manner."

The most feared thing is that this group of students will be frightened and panicked, causing a stampede and affecting the evacuation.

While maintaining order, Dong Yi and the three organized the experts and students to retreat and return to the entrance of the corridor along the road.

Just as everyone exited the corridor, they rushed towards the entrance.

A loud bang.

Everyone felt the earthquake in the corridor.

Finished!

Everyone was stunned.

A huge stone gate fell down from the passageway, like a broken dragon stone in an ancient tomb, completely blocking the passageway.

The poisonous gas filled the air.

There was that foul, sickening smell.

The young students were terrified, their lips turned white without a trace of blood.