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Yang Shiyun and others attracted most of the robots, and the robots basically swarmed up after receiving the order to annihilate the invading enemy, unlike the regular troops who pay attention to any tactics, is it that the aliens have never paid attention to tactics, or they don't think it is necessary to use tactics at all, and they don't care about the earthlings at all.

Of course, the robots are proud of their capital, because their bodies are extremely hard, and ordinary bullets can't do any damage to them, and they are agile, rushing up before the humans can make more attacks, and quickly destroying the enemy, but this time they seem to have encountered a fierce enemy.

There are about fifty robots in the first batch, they are at the outskirts of the sinkhole, they receive the command to destroy the enemy through the wireless signal and immediately run over, they don't even turn on the laser weapon, the number of humans makes them think that it is shameful to waste energy, so they plan to capture these humans and tear them apart!

"Fire!" Yang Shiyun waved her hand fiercely, and at the same time, the electromagnetic gun in her hand also shot angry bullets, each bullet was aimed at the head of the robot, even if their core was not in the head, but the damage to their eyes would still reduce their combat effectiveness, and then destroy them.

Boom, a two-person compression cannon fired two cannons at the same time, so that the fan surface that the robot rushed over can be completely covered, the first time the robot encountered such a strong attack, their body can not compare to the power of the compression cannon even if it is hard, immediately more than a dozen robots were blown away, and the limbs were incomplete when they landed, although the core part was still running, but they had lost any ability, unless they could self-detonate or can also cause some damage.

The target chosen by Yang Shiyun is the robots in the back row, firstly, they run slowly, and secondly, they can avoid repeated kills with the compression cannon, but no matter how fast Yang Shiyun's shooting speed is, no matter how fast the flight speed of the electromagnetic gun bullet is, it is still not as fast as the robot, even if the intelligent chip does its best to budget the trajectory of the robot's progress, but there are still half of the robots that slip through the net.

Five robots were blown out of their heads, and after losing their heads, three were immediately paralyzed, and two others were spinning in place, and they should have lost the function of their eyes, and they didn't know where the enemy's direction was. The teacher was unfavorable, and the robot suffered a heavy blow for the first time.

The air wave of the compression cannon explosion knocked the follow-up robots to the ground, which gave Yang Shiyun enough time to change bullets, and soon she finished aiming and fired the second shot, at this moment the momentum of the robots was exhausted, their running speed slowed down significantly, and even many of them just got up from the ground to become bright targets, and the second shot Yang Shiyun fired ten bullets and gained the surnames of eight robots.

The second wave of compression cannons fired, the robots that had just been assembled into a formation were sent flying again, they were like encountering an insurmountable barrier, constantly rushing to the peak and constantly being killed, although there were more and more of them, but there were six teams of compression cannons in groups of two, each time shooting two teams, the first team finished shooting, the second team immediately picked up, the third team finished shooting, the first team has been pressurized, and the robot suffered heavy losses.

Zhao Qiang and the other two special forces have been getting closer and closer to the pit wall of the sinkhole, under the leadership of Zhao Qiang, the three of them slowly advanced underground, lest they be discovered by the robot's detection system, but fortunately, the robots didn't seem to have the heart to take care of it, they put their main strength and attention on Yang Shiyun and others, after this moment of fighting, although Yang Shiyun had the upper hand, but the compression cannon is not without energy limitations, and this is a more powerful 'cannon', not a gun.

Although the continuous shooting did not damage the compression gun, but the energy began to run out, there have been two groups that have given up the compression gun to use the electromagnetic gun to snipe, but they are not Zhao Qiang and Yang Shiyun, there is no chip in the body to control the aiming, so the special forces can only use a barrel to shoot, although the speed of shooting is fast, but it can't stand more and more robots, and the overall situation is not good.

Zhao Qiang stopped the drilling rig, through the contact system in the three drilling rigs, Zhao Qiang also gave the other two orders to stop, fortunately, the three drilling rigs are very close, if the distance in the rock is far away, even if Zhao Qiang has the ability, he can't contact the other two, only Zhao Qiang is equipped with a rock detection system among the three drilling rigs, and the two that were temporarily built are simplified versions, if it weren't for Zhao Qiang commanding them, I'm afraid they don't know where to drill.

There are still more than ten meters away from the cave wall of the sinkhole, Zhao Qiang drilled a T-junction horizontally, turned the drilling rig over and began to move explosives out, and then set the timer, asked the other two drilling rigs, and the other party replied that it has also been installed, for special forces, this kind of thing is a piece of cake, the key is not to be discovered by the robot, otherwise who knows how they will stop it, as far as the robot should not be aware of the enemy's infiltration, the strategy of striking east and west has succeeded.

"Withdraw!" Zhao Qiang gave an order, and the three drilling rigs returned along the same path, which smoothly made Zhao Qiang unbelievable, the combat effectiveness of the robots is indeed amazing, but these alien products are not perfect, otherwise they will make mistakes when experimenting with the spacecraft? However, when did they create a large number of flying robots, this is something that Zhao Qiang did not expect, fortunately, those flying robots have been scattered, and it will take time to recover Yang Shiyun and others who are attacking the ground, but now the sinkhole is about to be blown up, even if the pressure on the troops responsible for attracting robot firepower on the ground is great.

Zhao Qiang began to drill up along the original road, although he was about to rush to the ground, but he was still paying attention to the surrounding situation, he needed to choose the best position to connect Yang Shiyun and others to the drilling rig and withdraw from the ground, at this time Zhao Qiang saw a big object from the screen, which was in the rock layer under him, this object was approaching Zhao Qiang at a very fast speed, but the detection system accurately measured that the object was only very close to Zhao Qiang's drilling rig, not towards the drilling rig, Zhao Qiang magnified the image of the object on the screen, It's a spaceship, and it's flying upwards along a huge sinkhole!

The development speed of aliens is too fast, and they successfully experimented with the spacecraft during the time that Zhao Qiang and others were on the ground. Or were they able to use the spaceship in the first place, but for some reason the spacecraft malfunctioned but it was repaired in a short period of time, no matter what kind of spacecraft it was on the ground, it would not be a good thing, with the size and combat effectiveness of the spaceship, I am afraid that Zhao Qiang will not be able to deal with it! Not to mention the ordinary weapons on Earth, is it really an attack with a nuclear bomb? Then the consequences will be serious.

"You go back to pick up Professor Yang immediately, I have other things to do." Zhao Qiang's navigation is basically completed, he gave an order to the other two drilling rigs, even if there is no drilling rig to lead others to withdraw from the sky, of course, to guard against the flying robot that went out suddenly returns, but Zhao Qiang is attracted by the flying saucer that is getting closer and closer, he must find a way to stop the flying saucer from flying up, it is best to destroy it completely.

The other two special forces couldn't control Zhao Qiang, they could only obey Zhao Qiang's orders, and the battle on the ground had already been decided at this time, Yang Shiyun and several people were forced to shrink in a corner of a mountain, and the attack of the robots became more and more fierce, although they dropped hundreds of tattered bodies, but Yang Shiyun and several people were exhausted, and they saw that the robots were only 100 meters away from them.

The two drilling rigs rushed out of the ground, and the driver opened the hatch and took out the compression cannon from inside, and this time he came to carry out the task almost all the compression cannons of the special division, but there was no place to store them, and some of them were thrown in the drilling rig room.

Boom, boom, the newly added compression cannon blocked the robot's attack, and Yang Shiyun waved her hand: "Everyone get on the drilling rig and prepare to retreat!" What about Zhao Qiang, what about the other drilling rig? Yang Shiyun asked the other two special forces.

The two special forces shot together: "Instructor Zhao may have made other discoveries, he turned back." ”

Yang Shiyun punched the rig hatefully, "How can this guy act privately." ”

The special soldier said: "Professor Yang, hurry up and board the plane, we will cover you." ”

Yang Shiyun said: "No, two drilling rigs can't pull so many people. ”

The special soldier said: "Squeeze hard, it's safer to go underground than on the ground, because those flying robots are about to come back, and we can't walk on the ground like when we came." ”

Yang Shiyun said: "I'm not afraid, there must be someone behind to cover, you go!" "Anyway, Yang Shiyun picked up a thick compression cannon, it was very difficult to make this thing alone, but fortunately, Yang Shiyun's body is special, she is half human and half machine.

At this time, it is not an occasion for quarrels, the special forces did not dare to delay the time and immediately boarded the drilling rig and entered the underground, in fact, it was not impossible to squeeze in with one Yang Shiyun, but Yang Shiyun naturally had her plans, and she didn't want to leave and others couldn't force it.

Boom, an explosion that shook the ground, as if the sky had collapsed, several square kilometers of land around the sinkhole had changed, the whole ground suddenly rose a few meters and then fell violently, this fall was not a few meters down, the entire sinkhole sank to the ground, forming a funnel-shaped depression vortex with it as the center, and the surrounding rubble rolled down into it.

The stones kept falling downward, with the acceleration of the kinetic energy carried on the top was amazing, and at this time the flying saucer happened to be below, the sinkhole was originally a straight pit, the flying saucer knew that something happened above his head and had nowhere to dodge, the only way was to fall, but the speed of its descent was not faster than the speed of the stone falling, and finally the stone smashed on the upper part of the spaceship, the spacecraft shook, the falling stones did not stop, at the beginning the spacecraft was still bearing, but more and more stones hit the spaceship, it finally could not bear the heavy burden and began to lose control, Bumped along the wall of the sinkhole and fell to the bottom of the pit.

The robots on the ground froze, although they could still find the enemy's target, and even made them happy that there was only one enemy at this time, or a female surname, but the sinkhole behind them collapsed, and the robot's scheming man was suddenly stunned, so he suspended the control of the machine, and the robot stopped acting in a daze, and then turned back to the sinkhole in a unified manner, they must find a way to ensure that the sinkhole is unblocked, which is their duty!

But to turn back is to die! The robots disappeared into the whirlpool with the sinking strata, no matter how powerful and fast they were, they were useless, and Yang Shiyun turned on the anti-gravity device and easily suspended in the air to avoid this catastrophe.

(To be continued)