I can extract health points

As they were talking, a crisp dripping sound was heard, and everyone heard the sound of air gushing from underground, and then the door slowly opened from the middle.

"This is actually a pneumatic door!"

As the door opened, there was just one person's body, and Ling Chao was the first to get close.

"Boss! There is a tunnel inside!"

After confirming that it was safe, Ling Chao ran in first, and then Li Xiao was the second to cross the door.

Just as he had guessed just now, this door was half a meter thick, and it was definitely a nuclear bomb-proof level.

Everyone entered in a line, and the enemy's bullets behind them had already crackled on the wall. Zhou Shuang was the last to enter, and before that he closed the door again.

The tunnel seemed to have entered an emergency state, and the emergency lights on the wall were all red. Everyone turned on the tactical flashlight and moved forward.

Just after turning a corner, two Gatling heavy machine guns suddenly opened fire, and Ling Chao and Chen Hu were immediately knocked to the ground by the inertia formed by the dense bullets.

At this time, Li Xiao was quick-witted and took out a rocket launcher and fired a round, which immediately silenced the heavy machine gun.

Chen Hu rushed over first, but found that in addition to the bodies of two Black Hawk soldiers, the tunnel was blocked by an electric gate.

However, this did not discourage everyone. Zhou Shuang, who had successfully broken through the base firewall, opened the gate in just two minutes.

Behind the gate were three elevators. According to Ling Chao's judgment, the three elevators should be universal. He pressed the down button and the elevator door opened. What came into view was a super-large elevator of nearly 20 square meters.

At the elevator entrance, Li Xiao noticed that there were actually six underground floors here!

They opened the middle elevator and went directly to the underground floor.

Ten seconds later, with a ding, the elevator door slowly opened, but the first thing they saw was not the scene of the underground floor, but dozens or hundreds of black gun muzzles.

"Shoot!"

Chen Hu shouted, but it was already a second too late. In an instant, they were attacked by a rain of bullets, and the entire Shadow Squad was shot into the elevator.

Ling Chao saw that the situation was not good, and pressed the elevator door closing button casually, and countless bullets were quickly blocked by the alloy elevator door.

Li Xiao hurriedly checked everyone's health and found that in the past half an hour, their health had been consumed to about 5 million.

"Everyone, prepare your grenades, watch me operate!"

Li Xiao took out a four-barreled rocket launcher. In this case, a big killer must be used to break their defense.

The elevator door opened again, and the outsiders couldn't wait to open fire to suppress it. When the door opened half a meter, Ling Chao and six people threw a grenade at the same time.

But unexpectedly, the Black Hawk troops had the same idea, and dozens of grenades flew into the elevator.

Two seconds later, there was a violent explosion inside and outside the elevator. Li Xiao was blown up by the grenade on the spot and even his mother couldn't recognize him.

Fortunately, the pain was only temporary. After the explosion, Li Xiao angrily picked up the four-barreled rocket launcher and fired outside.

The explosive power of the rocket immediately dispersed the Black Hawk troops who were blocking them. Chen Hu rushed out first, holding the squad machine gun that had been thirsty for a long time and swept wildly.

But the Black Hawk troops in the base were obviously better equipped and had higher ranks. They only killed a dozen people after firing 150 rounds of bullets.

But in terms of blood volume, Li Xiao never backed down. Everyone stood still and killed the Black Hawk troops in a few minutes.

Stepping over the bloody corpses, Li Xiao could see the structure of the underground layer clearly.

You don't know until you see it. It's shocking to see that the Black Hawk Empire has dug a space as big as a main stadium and four meters high.

They arranged a complete equipment manufacturing line here, and countless mechanical arms and robots are still running until this time.

Li Xiao looked carefully at the equipment on the assembly line. They were new rifles with sci-fi and strange shapes. Li Xiao was sure that they were completely different from traditional weapons.

The efficiency of this production line is very high, basically more than two rifles per minute.

"Tsk tsk... It turns out that military factories operated by the state machinery are the most ferocious."

Without giving them much breathing space, the elevator door soon opened again, and another group of Black Hawk troops rushed out. Now they could calmly deal with the remaining enemies.

After dealing with the enemies on the first floor, they immediately went to the second underground floor.

The second floor is still a factory as large as the first floor, but the difference is that this is an ammunition production line that has stopped operating.

On the unmanned assembly line, there are no staff except robots. Li Xiao came to the end of the assembly line, where there were boxes of bullets that had been packaged.

He suddenly found that there was something wrong with these bullets. Traditional bullets are composed of propellant and bullets, but the bullets in front of him have no shells, but are die-cast by wrapping the bullets with a black crystal-like object.

This reminded him of a new type of shellless bullet that had been launched on Blue Star a long time ago. These two bullets are made in the same way.

But the one on Blue Star is die-cast with solid gunpowder, while the one here is this kind of object shaped like a black gemstone.

"What kind of bullet is this?"

Li Xiao picked up a bullet and soon found that he could open its information panel.

5.8mm Black Crystal Rifle Bullet: A new type of ammunition that uses black crystals containing strong energy as the firing energy.

Special: Using black crystal bullets can greatly improve the range and accuracy of firearms, while obtaining powerful bullet kinetic energy.

Attributes: Use a special crystal gun to fire, with an effective lethality of 350 points.

"Fuck!"

Seeing the lethality of the black crystal bullet, Li Xiao was stunned. A single shot can do 350 points of damage! Almost five times the lethality of the QBZ series rifles!

"My child..."

He put the black crystal bullet in his hand in front of his eyes and looked at it: "350 points of lethality, how can you make the heavy machine gun embarrassed?"

Li Xiao did not hesitate to put the 50,000 black crystal bullets on the scene into his backpack. He did not pay attention to it when he was on the first floor just now. Now it seems that those rifles should be specially used to fire this kind of bullet.

"Go to the third floor!"

Seeing the appearance of the black crystal bullet, Li Xiao suddenly felt that this trip might be right, but it did not mean that he would be satisfied with just getting 50,000 black crystal bullets.

As soon as he entered the third floor, Li Xiao suddenly felt something was wrong, because in the five-meter corridor at the elevator door, countless intertwined red lights were rotating in an orderly manner.

Li Xiao had seen too many such laser arrays in movies. It was rumored that if you encounter a laser beam, your arms and pushes will be broken.

He casually took out an AK rifle from his backpack and held it out to try it out. The result was that these laser beams were just ordinary laser beams.

But just when he thought so, a stream of water suddenly spurted out the next second. Before Li Xiao could react, he saw that the AK had melted half of the steel and wood.