Ye Chen piloted the No. 5 drone, passing through the cracked opening and flying towards the temple hidden inside the mountain.

Before his eyes, the footage captured by the drone was displayed in real time.

However, as they ventured deeper into the cave, the signal began to falter, as if interfered with by some unknown force.

Ye Chen steeled his resolve and, disregarding everything else, continued to maneuver the drone rapidly toward the interior.

After flying for another two kilometers or so, the drone suddenly lost control and crashed to the ground like a helpless bird, with its signal completely lost.

Ye Chen tried to contact the drone several times, but it didn't respond at all.

His heart sank. He stood still, not daring to make any rash moves, and began to call out to Chen Ziqiao on Mousse No. 2.

"Ziqiao, fly Mousse No. 2 over my head."

“Received, brother-in-law,” Chen Ziqiao replied.

A short while later, the enormous Mousse II spaceship appeared above Ye Chen.

"Ziqiao, turn all the detectors on Mousse-2 to full power and scan this area ahead. Let's see what we find."

Chen Ziqiao looked in the direction Ye Chen was pointing, responded, and activated all the detectors on Mousse II to scan.

Ten minutes later.

When the scan results came out, Chen Ziqiao was immediately shocked.

In the radar image, the location of this cave is a black hole, and no radar wave responds when it enters.

It's as if this place is a black hole.

Chen Ziqiao quickly checked the radiation detection data and breathed a slight sigh of relief after seeing that the radiation level was comparable to the surrounding area.

"Brother-in-law, the radar detection results here are a bit strange. I'll send you the data." Chen Ziqiao said as he sent the data.

After receiving the data, Ye Chen was immediately filled with doubt and uncertainty. "Could this place be like the underwater ruins, where you can only enter but never leave?"

Thinking about this, he became even more cautious and dared not take any risks.

However, now that he had discovered this place, he would definitely be unwilling to give up if he didn't figure things out.

After considering for a moment, Ye Chen flew back to Mousse No. 2.

"Brother-in-law, what's the situation with that ruin down there?" Chen Ziqiao asked as he approached.

Ye Chen said, "I don't know, the drone's signal isn't coming out."

"So what should we do now?" Chen Ziqiao asked, frowning.

Ye Chen walked towards the cockpit exit, calling to Chen Ziqiao, "Put on a mecha suit and come with me. We're going to modify an unmanned vehicle and try using a wired connection."

They arrived at the storage room of Mousse II and found a cable that was several kilometers long.

Next, one end of the cable was connected to an unmanned vehicle, and the other end was connected to the mecha.

Then, the two carried the unmanned vehicle to the entrance of the cave.

Through the opening, Chen Ziqiao saw the enormous temple inside and exclaimed in amazement, "Brother-in-law, this is truly a miracle! I never imagined there would be such a magnificent structure on the far side of the moon. Could it have been left behind by aliens?"

Ye Chen shook his head and said, "I don't know, we'll have to wait until the exploration is complete."

"The universe is so vast, and there are countless amazing things that humans don't know about. Let alone the universe, even just Earth has a history of more than 4 billion years. Humans have only existed for less than 5,000 years. Who dares to say that they can understand all of Earth's past?"

"Based on some of the relics discovered so far, there may have been more than one civilization on Earth."

As the two were talking, the drone had already started moving, dragging the cable as it sped into the cave.

Just as Ye Chen had predicted, the signal was very stable this time. It seems that this unknown energy only affects the invisible waveband and has little impact on the physical world.

About ten minutes later, the driverless car arrived in front of the huge temple.

I drove the driverless car around the temple once, and finally stopped in the very center of the temple.

The temple has an ancient and mysterious appearance, with tall stone walls that give it a solemn and magnificent feel.

At the entrance of the temple are a pair of huge stone sculptures of mythical beasts, which look like guardian deities protecting this mysterious building.

There are eight stone tablets at the bottom of the gate steps, with some simple patterns and carvings on them.

Although these carvings consist of only a few strokes and are somewhat blurred, one can still sense that they depict some kind of scene.

The temple doors were tightly closed, preventing the driverless car from detecting any further information inside.

Outside the cave.

Ye Chen saw this scene through the camera of the driverless car and couldn't contain his curiosity. He said to Chen Ziqiao, "You stay outside and wait for me. I'll go inside and take a look."

"But brother-in-law, isn't there any danger here? Should we send a few robots over first?" Chen Ziqiao said with some concern.

"It would be best to investigate personally."

Ye Chen shook his head. He had carefully observed the area when the unmanned vehicle passed by the crashed No. 5 drone, but he did not find any traces of time erosion found in the underwater ruins.

"No danger has been found so far; only the wireless signal has been affected."

Before Chen Ziqiao could stop him again, Ye Chen decisively said, "Stay outside and wait!" Then he activated the jetpack on his back and flew towards the depths of the cave.

"Brother-in-law, be careful!" Chen Ziqiao was too late to stop him, so he could only remind Ye Chen to be careful from behind.

At the same time, they kept a close eye on Ye Chen's figure, becoming cautious and on guard.

Ye Chen controlled the mecha, flying slowly along the ground while keeping a close eye on the data detected by the mecha, ready to stop at any time.

Sure enough, as they went deeper, his conversation with Chen Ziqiao began to be affected.

When they arrived at the crash site of Drone No. 5, the conversation was completely inaudible, and all they could hear in the headset was a buzzing sound of electricity.

Ye Chen's heart stirred, and he tried to retreat several dozen meters to the outer perimeter.

Sure enough, Chen Ziqiao's voice came through the earpiece, albeit intermittently, but it was still enough for a conversation.

"Brother-in-law, the signal... is... being interfered with, what's the situation on your end?"

“No danger detected. You can continue waiting outside. I’m going inside. The call will be interrupted soon.” Ye Chen said, turning back to the fifth drone.

A guess flashed through his mind, and he tried to control the drone.

As he expected, the No. 5 drone took off.

Ye Chen stood still and controlled the drone to fly around the area.

When the drone flew to a distance of two kilometers from him, it lost its signal again.

He flew toward the spot where the drone had crashed, trying to make a connection.

Sure enough, after flying forward for several dozen meters, he reconnected with the drone.

"I see."

Ye Chen immediately understood that this place wasn't swallowing up wireless signals, but rather that something here was weakening them.

Moreover, this distance should be around two kilometers.

Thus, Ye Chen had an idea: all he needed to do was set up a signal amplification device every two kilometers, and communication here would be just like normal.