After taking the Rejuvenation Pill, Xu Yi's condition recovered within a few seconds.

Then, he started to kill all sides again.

Hundreds of Zhenguan Knifes are flying in the air, constantly harvesting the lives of insects.

There were fewer and fewer living bugs on the battlefield, and the supernatural warriors of the Qikill Army burst out with stronger combat power.

Because victory is in sight.

On the city wall, laser weapons constantly emit lasers, killing bugs.

The battle lasted for three hours before the last bug was killed by Xu Yi.

"The battle is over!"

Xu Yi looked at the corpses and flames on the ground and breathed a sigh of relief.

There were still some disabled bugs moving, but the soldiers of the Qikill Army no longer had the strength to finish the fight.

They sat on the ground powerlessly, and everyone was eating mutant beasts to replenish their energy.

Even those medical teams were all exhausted and they were no longer able to finish the work.

Except for Xu Yi, no one else has any strength.

Therefore, the final attack was left to Xu Yi.

While finishing the attack, Xu Yi took the corpse of the insect into his storage space.

These bugs can be used as energy and can replace oil.

The scientific research center of Qisha Army has used insect corpses to liquefy smoothly. The effect after liquefaction is more powerful than gasoline and can be used as a new energy source.

More than one-third of the bugs burned, and the rest could be collected.

With these corpses of insects, you can try to develop new missiles, and propellant can use this corpse liquid.

After cleaning up the battlefield, Xu Yi's storage space was also filled with stuff.

So, Xu Yi decisively returned to the city lord's mansion, poured all the bodies into the warehouse, and then Xu Yi returned to the outside of the city.

"Xu Yi, the second wave of insects entered the jungle area. They were hunting mutant beasts to collect brain beads and corpses."

As soon as Xu Yi arrived outside the city, he received the information sent back by Ling Yue.

Obviously, Ling Yue entered the communication area of ​​the Qisha Army.

Before, Ling Yue had no news came back.

Actually collecting brain beads?

Xu Yi frowned and said, "This is not good news. They must have collected brain beads and corpses to hatch bugs."

"Even if it is not for hatching, it will affect hatching. Xu Yi, is your battle over?" Ling Yue also agreed with Xu Yi's inference, thinking that the Zerg must have collected brain beads and mutant beasts' corpses for reproduction and survival.

"It's over. We killed all the bugs and resolved this wave of bug crisis. I just don't know when the next time will come." Xu Yi did not have a relaxed expression on his face, because he didn't know when the next attack would come, and he didn't know whether the next time the bugs would improve their strength.

The insect nest cannot be destroyed, and the Zerg crisis cannot be resolved.

Ling Yue did not speak anymore, but accelerated back to Xu Yi.

Looking at the devastations all over the ground, Ling Yue was also in a very heavy mood.

There are scorched earth everywhere, and there are many corpses of insects burning or smoking.

"Xu Yi, go and rest, I'll clean the battlefield." Ling Yue said directly.

"It's okay, I'm not tired, let's go together. They probably have to recover for a few hours before they can recover." As he said that, Xu Yi turned his head and looked at the supernatural warriors who were exhausted and injured.

Everyone has tried their best. If the Zerg population is larger, maybe many people will sacrifice.

In general, the Seven Killing Army is still too weak, and the gap between the third and above supernatural warriors is too big.

It is better to find a way to improve the strength of the Seven Killing Army. Only when they all become stronger can they cope with more difficult situations.

How to improve?

There are two directions, one is to use brain beads, which are simple and crude.

Another is to cultivate a plant that can enhance its strength, such as Dragon Flame and Zhu Fruit, so that the soldiers of the Qikill Army can improve their strength after taking it.

Xu Yi is ready to develop both directions.

With Ling Yue's joining, the battlefield was quickly cleaned.

The soldiers of the Qikill Army gradually recovered a little strength. Xu Yi brought them back to the city and transported them back to the city lord's mansion with a car.

The people in the command center kept staring at the insect nest and outside the city. Only by confirming that the Zerg will no longer attack the Iron City today can this crisis be considered as surviving.

After Xu Yi returned to the city lord's mansion, he and Ling Yue came to the command center.

"Captain, the insects hunting mutant beasts have begun to return to the insect nest one after another. Do we need to send drones into the insect nest?" Xu Rui saw Xu Yi and Ling Yue appear, and stepped forward to report decisively.

"You can try it. We still need to know more about the situation in the insect nest. Take some small pictures, which are not easy to find." Xu Yi knew that insect eggs can improve their strength, but there was no way to enter the insect nest.

Otherwise, the existence of the insect nest can definitely increase the strength of the Seven Killing Army.

"Okay, we can use Hummingbird drone." Xu Rui immediately chose a model.

Xu Yi nodded and agreed to Xu Rui's suggestion.

Then, the personnel in charge of drone control began to dispatch hummingbird drones to fly out of an underground hangar near the insect nest.

The Qisha Army built many underground hangars in some areas of Linxiang City outside the city and stored many drones.

After all, it takes time to fly from the city to the outside of the city. It takes longer to fly to Linxiang City. If you put the drone hangar in Linxiang City, you can shorten the time.

In this way, they can quickly use drones outside the city to detect the situation.

A few minutes later, a drone, half smaller than a hummingbird, appeared in the area where the insect nest was again.

As soon as they tried to enter, Xu Yi and the others saw lightning strikes directly from the insect nest and hit the hummingbird drones.

Seeing this scene, Xu Yi and Ling Yue frowned directly.

"The insect nest actually has a defense mechanism, and it uses electric shock?" Ling Yue couldn't believe it.

"Perhaps, we have always underestimated its technological level. Perhaps, the Zerg also masters advanced technology. Of course, it may also master superpowers similar to the power of thunder." Xu Yi looked at the disappearing hummingbird drone in the picture and couldn't help but analyze.

Whether it is specific is only possible to know if it is entered inside the insect nest.

Outside, nothing can be observed.

"Stop trying, there is no need to waste the drone." Xu Yi stopped the test plan directly.

The number of drones is limited. Although they have a certain production capacity now, their output is very low. It is not easy to produce some drones, so there is no need to waste them here.

Xu Yi and Ling Yue observed for a while, then prepared to leave the command center and go back to rest.

However, before they could walk out of the control center, they received a communication request, a communication request from the military headquarters.
Chapter completed!