Several brand-new robots stand silently at the entrance of the cave, and technicians are nervously carrying out the final debugging work around it.

The most striking thing in the row of robots is the cleaner.

The Cleaner robot still walks on tracks, but this time with a longer wheelbase and side armor skirts, it looks more powerful. And the diamond-shaped turret is equipped with a long high-pressure sprinkler, which looks more and more like a tank on Earth.

It's just that the outside of this "tank" is not covered with brick-like reactive armor, but a resin coating mixed with toner, which looks black and not slippery, but this coating will greatly increase the tank's corrosion resistance.

Behind the two cleaners, the Explorer III, which had been brushed with an anti-corrosion coating, was also ready.

Equipped with a high-powered searchlight, the longest robotic arm, and an ultrasonic generator, it still has to go on another expedition this time, and once it has cleared the insects, it will need the ultrasonic equipment it carries to continue exploring the terrain in the cave.

Behind Explorer III is another newly built robot, named Sapper One.

Unlike the other three tracked robots, Sapper 1 would look exactly like a small truck without those two robotic arms, with a small body with a sizable space behind the "truck".

The task of Engineer No. 1 is to set up a communication network, specifically to lay various pipelines, install various probes, lighting equipment, etc., to clear obstacles and create conditions for humans to enter behind.

This time, the energy supply system of the four robots has undergone some changes - they are all connected to a set of substation and communication devices. The main cable is pulled in from outside the hole, and finally the substation and communication device are put down at the position of the "bell mouth".

This not only reduces the probability of cable problems, but also makes it easier to trace the subsequent lighting network and monitoring network.

After a detailed inspection, the four robots were ready.

Chen Zheng and the others returned to the tent, and suddenly there was a quiet discussion with excitement inside.

In the tent, there were not only researchers under the glasses man, but also a dozen or so earthlings.

Some of these people were original agents, and some were ordinary earthlings who had recently spent their time on the expedition.

Two of the four robots are still under the command of the glasses man, and several earthlings follow them to learn how to operate the weapon system.

The other two are operated by agents under Lao Wang, and the other earthlings are responsible for the rest of the auxiliary work.

Standing in the middle of the tent, looking around, he ordered, "Go." ”

"Let's go!"

Start Engine ......

"Cleaner 1 self-test completed......"

"Cleaner 2 self-test completed......"

“……”

As if a switch had been pressed, the people in the tent slowly moved like a precise machine.

On the four large screens, the images transmitted back by the robots began to move, and one by one they lined up and burrowed into the cave.

"Keep your distance, pay attention to the cable ......" The man with glasses took care of the situation of each car group from time to time.

Soon the robots came to the "horn mouth" again, leaving Sapper No. 1 to do the infrastructure construction, and the others lined up horizontally and began to slowly advance in the unknown darkness.

Even though the power of the searchlight was increased again, the light still could not penetrate the darkness ahead.

"Keep your distance between cars...... Pay attention to the complementary ...... of visual fields"

The man with glasses dutifully commanded, and Chen Zheng stood staring at the screen without saying a word.

The three robots slowly moved along the mural, the cave wall kept retreating, and everyone was staring intently at the various data feedback......

However, the little bugs seemed to be missing last time, and until everyone came to the place where the eggshells were last found, there was no attack.

"Cleaner No. 1 and No. 2 turn around and be alert, Explorer No. 3 will go down ......" The man with glasses glanced back at Chen Zheng, Chen Zheng nodded and did not speak.

As Explorer III burrowed into the cylindrical space, searchlights swept across the ground...... The strangely shaped eggshells and gnawed unidentified insect shells of the previous ones reappeared.

"Take a sample."

"Yes."

The two agents began to manipulate the robotic arm, carefully picking up eggshells and toothed insect carapaces on the ground.

Suddenly, the researcher in charge of the analysis reported, "My lord! There are new discoveries! ”

"Oh?" Chen Zheng used the permission to call up the latest analysis report.

“…… Two kinds of tooth marks!? ”

Looking at the report in his hand, Chen Zheng's brows on both sides gradually twisted together.

"Yes, you look at the analysis here, all fresh carapaces are this kind of tooth marks, and the old ones are another...... So they should be two different ...... People, human beings. "Researchers don't seem to be very familiar with the neologism of "human".

"Hmm......" Chen Zheng groaned.

"Report, new discovery." Another researcher sent a new copy to Chen.

"What!? New eggshells!? ”

"Yes...... The liquid remaining on the inner wall of the eggshell has not dried yet......"

“……”

Two eggshells, two tooth marks, two different human ......

Could it be that the eggshells here have something to do with the two missing people!?

"3D modeling eggshells!" Chen Zheng suddenly ordered.

"Yes."

The glasses man's subordinates didn't ask why, and they were very resolute in carrying out Chen Zheng's orders.

Soon, the mess of eggshells on the ground gradually took shape on the screen...... However, under Chen Zheng's orders, they were put together.

"Sure enough......" Chen Zheng slapped his forehead and sat down in his seat.

I saw two humanoid domes placed side by side on the screen, one gray-white and the other blue-white.

"Damn parasites......" Chen Zheng hammered the armrest of the stool hard.

The result is already obvious, they are looking for a new host!!

If Chen Zheng hadn't found out early, after these zeros had become large, Chen Zheng himself would not have done anything, but the rest of the people would have died! And Chen Zheng himself will definitely not be able to build the tide gate.

Thinking of this, Chen Zheng couldn't help but be afraid for a while......

"The swarm!! Flamethrower ready!! ”

"Squirt!!"

"————"

"Bear!!"

As soon as Chen Zheng turned his head, he saw two fierce pillars of fire spraying towards the miserable white insect swarm, the high-pressure air gun spewed out the water gas, and the beating flames burned all the way up along the direction of the nozzle, and suddenly a large area of insects fell to the ground like raindrops......

"Stop, it's okay." The man in glasses waved his hand, and the flamethrower suddenly stopped.

In just a few tens of seconds, all the bugs died under the flamethrower's flames, leaving only the corpses of the bugs still burning.

Life seems so insignificant in the face of high-tech tools of killing.

"Explorer 3 brought the specimen back, and the team of cleaners moved on."

With Chen Zheng's order, the crawler ruthlessly ran over the charred insect corpse and continued to drive towards the unknown darkness.