After destroying the mecha, Jiang Fei quickly returned to his defense zone. At this time, all the security guards under his command were dead. Moreover, when Jiang Fei was chased, the invaders other than that mecha had already entered the fourth floor of the underground.

"What are these guys entering the life extension center for?" Jiang Fei asked in confusion. All the invaders had rushed down and no one was left at the entrance, which meant that the other party had no intention of retreating at all.

"Hmm?!" Suddenly, Jiang Fei's eyes rolled. Since the invaders had entered the fourth floor of the underground, why didn't he follow him? Maybe he could still discover the secret about this life continuation center!

Thinking of this, Jiang Fei temporarily closed the lightsaber in his hand, and then he jumped and entered the fourth floor of the underground.

"Dadada..."

"Boom..."

The sound of gunfire and explosions came from afar, and the roar of mecha operations could be vaguely heard. It was obvious that these invaders were not only carrying one mecha.

Jiang Fei carefully touched it, but fortunately, the invaders did not leave anyone behind. Although they didn't know what their goal was to advance, this at least provided convenience for Jiang Fei's approach.

Because these invaders were fighting fiercely with security personnel in front of them, Jiang Fei's approaching was not noticed by anyone. He carefully hid in a corner, quietly watching the two waves of people in front killing each other to death.

"Fight, fight, fight to the death!" Jiang Fei said in his heart. Anyway, these people are fighting each other, for him, it is a battle where dogs bite their mouths. Whoever loses wins, Jiang Fei doesn't want to get involved.

Through observation, Jiang Fei discovered the true scale of these invaders. They hit the fourth floor of the underground. They also had more than a hundred cloned warriors and two silver-white mechas.

Under the powerful firepower of the mecha, these invaders soon broke through two defense lines and approached the entrance of the fifth underground floor.

"How many floors are there in this underground building at the center of life extension? Can these invaders fight to the end?" Jiang Fei thought to himself.

"Boom boom boom boom..." The two mechas continued to advance. Although the security guards also had heavy firepower such as energy cannons in their hands, the attack of one shot and two cannons could not threaten these two mechas, and they could not even weaken their shields.

"It seems that the lightsaber in my hand is quite powerful!" Jiang Fei said in his heart. Judging from the battle in front of him, one of the mechas had been attacked by no less than twenty energy cannons, but its shield was still firm.

In the battle just now, Jiang Fei used his lightsaber to cut it for a long time, and the shield of the mecha was almost broken, so that the drivers of the several families forced to play suicide attacks. This shows that the lightsaber in Jiang Fei's hand is absolutely powerful.

"Boom boom boom..." With the bombardment of the mecha energy machine cannon, soon the last line of defense of the fourth floor was also destroyed, and all the security personnel were blown into pieces.

"Quick! Quick! Quick!" A clone warrior led by the leader shouted loudly, and more than a hundred clone warriors passed through the passage one after another, entering the fifth floor from the fourth floor of the underground.

"Dadadadada..." As a result, these clone soldiers were ambushed as soon as they went there, and seven or eight people were killed on the spot.

However, these cloned warriors were super soldiers instilled with combat skills, so they quickly stabilized their positions. After the mecha went down to the fifth underground floor, the invaders' counterattack began.

With the powerful firepower of the mecha, the security personnel and military police who blocked the invaders at the entrance were quickly eliminated. The invaders began to advance, and Jiang Fei quietly went down to the fifth floor underground.

From a dead clone warrior, Jiang Fei saw a rifle and picked up several grenades and carried them on him. Although the lightsaber is a sharp weapon, long-range weapons are also necessary.

Following these invaders quietly, Jiang Fei followed them and continued to move forward. Soon, these invaders broke through the fifth floor of the underground and entered the sixth floor of the underground.

From the sixth floor underground, there were no security guards from Leviathan Company in the Life Continuing Center, but all military and police!

"It seems that it is already very close to the core of the center of life continuation!" Jiang Fei said in his heart.

Because they are all professionally trained military and police, and the weapons of these guys are more sophisticated than those of the security guards, the resistance of these people has become more complete.

"Quick! Quick! Fifty-five minutes left!" the clone warrior led by the leader shouted loudly.

"Fifty-five minutes? What does this time mean?" Jiang Fei said in confusion behind.

These fifty minutes are definitely the last time the invaders will reach the core of the life-continuing center, but what does it mean? Is there something going on at this point in time, or will reinforcements from the consuls arrive here?

Jiang Fei was very confused. If reinforcements arrived in fifty-five minutes, it would be easier to understand, but if something important was going to happen, it would be difficult to guess.

"Forget it, let's watch it!" Jiang Fei took a deep breath, then continued to stick behind these invaders, and followed them to advance steadily.

"Boom boom boom boom..." The guns and cannons in front became even more intense, and soon a mecha was destroyed on the spot. When Jiang Fei passed by, he could see the thick smoke rolling inside the mecha, and the pilot had been burned into a ball of coke.

Like other clone warriors who died in battle, no one cared about these dead invaders, and the remaining invaders were still moving forward quickly.

After paying the lives of a mecha and more than 20 cloned warriors, these invaders finally broke through the defense of the sixth floor underground and arrived at the entrance to the seventh floor underground.

"Go!" With the order, the clone warriors were still clearing the way. At this moment, the only mecha had become the treasure of the invaders, and it could never be easily damaged.

"Dadadada...boom..." As expected, the clone soldiers were hit hard as soon as they went there. There was indeed an ambush at the entrance of the seventh floor.

"Come! Crush! Crush!" The clone soldiers launched a charge without fear of death. Under their powerful offensive, they quickly seized the entrance to the seventh floor, although they paid nearly fifty people for this!

At this moment, there were still more than 30 people left of the invaders and a slightly injured mecha.
Chapter completed!