The Courier's memory is incomplete, and his field of vision is narrow, with only a single dark shadow seen the whole time, and the whole picture is not seen.

But at this moment, the center of the valley was empty, there was no dark shadow, and there was no image on the stone platform.

Chu Jungui looked up at the sky, and there was not even a messenger.

Then he remembered that all the messengers had been killed by the roses.

At this time, looking around, the valley was full of rocks, no vegetation, and no caves in sight, except for the smoke of corpses. In addition, the ground in the valley is very flat, and it does not look like it is naturally occurring at all.

Chu Jungui looked at the ground under his feet, suddenly squatted down, and observed carefully. The floor was as flat as a layer of polished marble, with countless tiny holes, as if it had been pierced by a needle.

If you don't look closely, you might mistake these holes for natural holes. However, in the eyes of the test subject, these tiny holes are so neatly arranged that the distance error is so low that ordinary humans cannot distinguish the error with the naked eye. If Li Ruobai was here, he would definitely be very comfortable to watch.

Chu Jungui called Lin Xi over, pointed to the ground, and said, "There is a problem with the small hole on it." ”

Lin Xi squatted down, adjusted the mode of the mask monitor, and finally saw those neatly arranged holes. She pressed a hand to the ground, and the personal terminal emitted a shock wave, which in turn outlined the underground terrain with a shock echo. After a while, Lin Xi looked at the echo analysis results and said, "It's all solid underneath." ”

Chu Jungui squatted down, knocked on the ground, and then said, "No, it's all empty below 10 meters." ”

A full ten meters of solid rock formation was beyond the terrain detection capabilities of the personal terminal, but the test subject knocked on it casually, and the results were available. However, Lin Xi was accustomed to Chu Jungui's various peculiar performances, so he immediately asked people to drive the engineering vehicle over and prepare to excavate on the spot.

The engineering vehicle carefully bypassed the large stone platform and reached the central area.

Seeing those stone platforms, Chu Jungui's heart suddenly moved, and he said, "Take away all the stone platforms and move them to the base." ”

The warriors had already scanned the stone platform, and the results showed that the material was ordinary stone, so they didn't care. However, since Chu Jungui had an order, they worked in pairs to move the stone platforms back to the mobile base one by one.

At this time, the engineering vehicle was already in place, stretching out the multi-functional boom, on which the percussion drill had been installed and nailed to the ground. As the construction truck starts, the percussion drill makes a loud noise, constantly impacting the rocky ground.

Unexpectedly, after a ferocious impact, a shallow pit like a bowl was left on the ground......

The hardness of the rocky ground in the valley was far beyond expectations, and even Chu Jungui was surprised. He collected the crushed stone debris, ordered someone to analyze the composition, and then had the construction truck replace the drill bit and install the cutting saw.

The saws of engineering trucks are not just for cutting trees, they can actually cut everything from metal to stone.

However, after another screeching noise, all the sawtooth of the cutting saw was smoothed, and there was only a shallow groove on the ground that was the depth of a palm.

Next, the engineering vehicle changed seven or eight tools in a row and switched dozens of modes. However, after scrapping several drill bits and a dozen saw blades, little progress was made except for a few scratches left on the ground.

The progress of exploration was blocked, and Lin Xi was not frustrated at all, but stared at the rocky ground with his eyes shining. Needless to say, there must be a mystery in the materials that even engineering vehicles can't handle, which is common sense.

The rock, while hard, is not invulnerable, and the solution is either to blast or find a passage into the subterranean space.

Chu Jungui asked the engineering truck to stop working, took out the pistol, and fired several shots at the ground. Of course, these shots had no results, but Chu Jungui had obtained the necessary data from the difference in the vibration echoes of several shots. With the center of the valley as the center, he kept shooting at the ground, slowly sketching out a map of the underground structure. In the structural diagram, a passage leads to the edge of the valley.

Chu Jun pointed to the edge of the valley and said, "The entrance of the underground passage should be over there." ”

Lin Xi summoned a few warriors and followed Chu Jungui to the edge of the valley. There are several rock packs on the ground, and you can see the entrance from the other side.

Chu Jungui did not rush in, but checked the equipment again and took the special high-powered shotgun from the soldier. He loaded his gun with armor-piercing shotguns, turned on the armor's spotlights, and immediately walked into the passage.

Not far into the passage, I saw two closed doors. The gate is a strange black color, like glass, and there are undulating lines on it.

Chu Jungui came to the door, stretched out his hand and touched it, feeling that the material was a little warm, but it was very strong.

Lin Xi pulled out a short knife and slashed hard at the door. With a cacophony of sounds, the tip of the carbide knife was completely destroyed, leaving only a faint white mark on the door.

Lin Xi slammed into the door, and was directly bounced back, and the door did not move at all.

After a deep groan, Lin Xi said, "Detect signs of life." ”

A full-time reconnaissance fighter opens the personal terminal and begins to scan. After a few moments, he said, "My lord, no signs of life have been detected. But...... The current detection range is only 5 meters, which may not be enough. ”

"Forget it, put it away, and get ready to blast. Lin Xi just gave it a try. Sophisticated instruments such as life scanners and geological structure scanners are basically useless on Planet Four.

It's just that when it comes to blasting, she looks at the glass-like gate in front of her, full of heartache. Such a special material, of course, the more complete the better.

"Wait a minute. Chu Jungui stopped the soldiers who were about to plant the explosives. He looked at the gate, switched more than a dozen modes in an instant, and finally in the mode of sensing the current, he saw that there were countless dendritic channels inside the gate, and electricity was constantly passing through. Chu Jungui suddenly had a feeling that these branch-like conductive channels were somewhat like the blood vessels of living beings.

He walked to the door, looked at the door, looked at the wall, and then drew his short knife, plunged it into the wall, and smashed a small piece of it down.

The shards look like ordinary stones, nothing special.

Chu Jungui pondered for a moment, turned the short knife upside down, and tapped it on the door with the hilt. Moments later, suddenly, at a certain frequency, the internal electrical current near the striking point was disturbed.

Chu Jungui wrote down the frequency, then entered it into his personal terminal, and loaded the research task. A minute later, the research was completed, Chu Jungui pressed his hand on the gate, and the personal terminal continued to release a specific shock wave, which vibrated the gate through the battle armor.

The current inside the gate gradually became disordered and became larger and larger. At this time, there was a significant vibration of the door, and finally with a bang, it actually opened to both sides by itself!