The UAV flew towards Zhang Chun with a large quantity of explosives.


The UAV circled in the air and dove towards Zhang Chun!


When the UAV was almost right in front of him, Zhang Chun used a tactic and rolled far away.


The UAV really exploded!


"Boom!" A huge explosion sounded out. The power of the bomb carried by the UAV had exceeded Zhang Chun's imagination.


No wonder the explosion-proof glass was so easily destroyed.


Fortunately Zhang Chun was far enough away, so he was completely fine.


"Lin Xue, can you find the source of these UAV?" Lu Chuan hurriedly asked through the ear microphone.


The power of these explosives were too great. If this carried on, the enemy could rely on explosives to raze the entire Military Engineering Institute to the ground.


Now, they had no choice but to go and eliminate the source of these UAV!


"Right now, we can only lock onto roughly three targets," Lin Xue, who was among the ear microphone, was extremely anxious, "The sniper who was buried outside has already identified three possible targets, but we can't determine the specific source. The three targets have been blocked by the tall buildings, so I am unable to observe the specific situation! "


Bad news after bad news.


"Are the snipers okay?" Zhang Chun asked in concern.


The hidden sentries had finally taken effect.


"Although the rooftops have been attacked, everyone knocked down the UAV a few times in advance. There haven't been any casualties yet."


"From the looks of it, the enemy is prepared to directly use the UAV to create a perfect path. Our guess is that this will serve as a cover for the enemy's underground tunnel attack, and that there might be more frontal attacks! "


Lin Xue analyzed, "Now you have to be careful, I'm afraid you will become the first target!"


However, Zhang Chun could not care about what Lin Xue said, UAV after UAV, were flying around unscrupulously in the great hall.


Zhang Chun had to be tired and had to dodge the attacks of the UAV.


Fortunately, the UAV had not reacted fast enough, so Zhang Chun was safe and sound for the time being.


"Right now, I have no idea how many UAV the enemy still has!" Zhang Chun roared at the ear microphone, "Send out a group of soldiers with accurate spear skills. Let them use the windows as a cover and try to kill these UAV!"


"Inform everyone else to get ready at the same time!"


God knows how many explosives the other side still had, they could no longer defend.


With one loud explosion after another, the elevator could no longer bear the pressure and the rope broke as it fell, revealing a huge passageway.


The UAV also followed the passageway and went to various floors!


"Send people to guard the elevator doors and the fire escape routes!"


Zhang Chun never thought that his opponent would actually have such a move.


As he was trying to figure out a solution, the lights suddenly dimmed and the entire office building fell into darkness.


So the other party was trying to destroy the electric circuit network!


Zhang Chun understood now, the other side was still preparing to send out their ground troops to attack! Otherwise, there was no reason to let the entire office building sink into darkness.


"Lin Hui, immediately lead a team to the main hall! It seems like they are planning to launch an all-out attack from the main hall! "


Zhang Chun was worth rushing out of the door, doing his best to eliminate the UAV s and prepare for the upcoming battle.


Fortunately, the armed forces had gathered at one place, Lin Hui and his team only rushed to the main hall for a little more than ten seconds.


On the other hand, the other side no longer sent their UAV directly to attack the hall, but kept attacking the other floors, especially the floor where the central research room was located.


You're covering for the last attack.


By now, all the security forces were already in the lobby, all of their guns pointed outside the lobby.


Zhang Chun then immediately stood at the entrance of the hall as the first line of defense.


The crowd on the road outside the military factory square had been evacuated due to the explosion, leaving only a few street lights.


Zhang Chun carefully looked around, and very quickly discovered four quickly moving figures.


These four black figures fearlessly rushed towards the Military Engineering Institute's gate!


"Attack!" Zhang Chun quickly laid on the ground and roared, followed by a wave of gunshots!


All the security guards fired at the black figures who had rushed in, and a barrage of bullets covered the entire square like locusts.


Zhang Chun laid on the ground and carefully observed the four of them.


Not only did the four not escape, they charged even faster!


It could be seen that these four people each carried two Uz submachine guns and were constantly shooting at the fire in the office building. From time to time, the guards would be knocked down! The suppressive firepower had a huge loophole!


Furthermore, the UAV was also continuously blasting away at the walls of the office building, creating a large amount of debris to cover the figures of the four people.


The four of them had used up all their bullets in no time, and Zhang Chun was prepared to use this opportunity to attack them.


After thinking of the fact that the four of them were only shooting with a single hand, they abandoned the firearms without bullets and pulled out a Uzzi submachine gun that was filled with bullets from their back!


Zhang Chun had never seen such an exciting way of fighting!


These four people were constantly approaching the office building under the firepower. As they got closer, Zhang Chun was able to confirm that these four fellows were completely unscathed!


Under the attacks of 20-30 people, they were completely unharmed and could even counterattack. Moreover, this was a four-man team, a standard World Tree Organization formation!


So this was the team of four commissioners sent by the World Tree Organization!


That would be difficult to deal with.


Zhang Chun quietly retreated back into the great hall and hid in the shadows of a corner.


Zhang Chun gestured and ordered everyone to retreat. The current battlefield was not something that ordinary people could deal with.


Soon enough, under Lin Hui's orders, the 20 to 30 guards divided into multiple groups, bringing the injured and taking turns to retreat.


Zhang Chun immediately held his breath.


The four of them stood with their backs to each other as they cautiously walked towards the elevator door.


After quickly arriving at the elevator door, one of them took a glance and jumped down with the rope without hesitation. Three of them immediately took the form of defense.


It looked like their target today was the underground computer room!


World Tree Organization is truly worthy of his reputation. With such a familiar fighting style, he directly pounced into the opponent's room after covering up their attacks, stealing their secrets that were stored in the computer.


Zhang Chun laughed, since that was the case, then he might as well choose the fighting grounds!


As long as the four of them jumped down, Zhang Chun and the guards would attack them from two sides.


Zhang Chun tapped the ear microphone and sent his thoughts over using his password.


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