Shen Jie, the reconnaissance team member, stepped forward and carefully examined the ruins on the ground. He found some metal fragments, picked them up, and examined them repeatedly. Then he said in a very affirmative tone, "It's not some high - tech product. It's a remote - controlled bomb! There's a monitoring device behind this door, and the movement of opening the door was detected."

"Generally, this kind of bomb is remotely controlled by a signal of a special frequency. If we could crack this signal, we could prevent the bomb from exploding. However..." Shen Jie said with great regret. There was no professional hacker in the team, and this had always been a weakness of the team.

"Damn it!" Yu Yifeng clenched his fists tightly, his palms turning blue. He had been too careless and not cautious enough! Perhaps they had been discovered when they just killed the rioters.

Although they were special forces members, they were still flesh - and - blood. Bullets hitting their bodies would also make them bleed and could be fatal. In the past, they might have called for support already, but now they could only move forward.

Because this was their last hope. The Earth had been destroyed, and this remaining Lunar Base was the only way to survive.

Although they didn't know exactly what Calvin and his group were up to, it was surely nothing good.

In 2015, more than ten thousand followers of the "Void Religion" committed mass self - immolation, which was masterminded by Calvin. After that, this crazy man actually claimed that they had just returned to the embrace of God through self - purification and called on people all over the world to do the same...

Now there were only fifty thousand people left in the human race. It couldn't afford any more internal destruction. With such a small population, it was impossible to support a civilization.

Yu Yifeng was not a man who was afraid of death. He was even more unwilling to see the remaining human race destroyed by a mentally ill person.

The dark corridor was like the gate to hell. All the team members only had a few rifles and a few grenades, without any high - tech equipment. Maybe a landmine under their feet could wipe out the entire team... But even if it was a mountain of knives and a sea of fire ahead, they had to move forward without hesitation!

Yu Yifeng was about to rush into the door first when Shen Jie grabbed him. "Captain, look! There's something going on!"

It was a glass bottle. It was lying quietly on the ruins, with a piece of paper inside.

Yu Yifeng waved his hand, signaling everyone to stay away. To prevent the existence of something like a button - bomb, he fired a shot from a distance. With a "bang", he accurately shot the bottle, and a white piece of paper floated out.

He didn't pick it up. Instead, he used his shoe to straighten the paper and took a closer look. It read:

"Yu Yifeng, this is Calvin. Surprised? We meet again after only five years! Want to catch me again? Come on. I'm waiting for you on the top floor of the Central Building.

Don't try to enter from other places. The window on the 44th floor is open. With your skills, it shouldn't be difficult for you to climb up. Remember, don't bring anyone else!"

Yu Yifeng looked up. Sure enough, there was a window open nearly two hundred meters above.

What did this letter mean? Was it just a provocation, or was there something else...

"Captain, you can't go!" Xu Yunjin said anxiously.

"I have no choice. I can't let the brothers die in vain." Yu Yifeng shook his head. "He asked me to go alone. He's not likely to shoot me directly. I'll go and check the situation first. Maybe there's a chance! You guys look around for any places where we can launch a surprise attack. Be extremely careful."

"I'll go with you. I've received lunar training before..." Xu Yunjin insisted.

Yu Yifeng interrupted him directly. "No need! You lead the team down here. I'll go up. That's an order!"

Xu Yunjin immediately stood up straight, his feet together, and said helplessly, "Yes, sir!"

Yu Yifeng softened his tone a bit. "We'll keep in touch through the headset. If I haven't come down after an hour and the headset signal is interrupted, then you... retreat first!"

Hearing this, everyone saluted in unison without saying a word. They watched Yu Yifeng climb the tall building, and tears welled up in their eyes involuntarily. This was an admirable captain, leaving the danger to himself and the safety to others. That's why, although Yu Yifeng was young, he had made those unruly special forces members submit wholeheartedly.

If it were on the Earth, climbing a tall building bare - handed would be extremely difficult and very dangerous. But on the Moon, it was a bit easier. With five - sixths of the weight reduced, it was equivalent to only twenty or thirty catties on the Earth, as light as a swallow.

Yu Yifeng jumped up suddenly, reaching the height of two floors. He grabbed a protrusion six meters above, and with the strength of his arm muscles, he lifted himself up another three or four meters.

He was like an agile monkey, his movements flowing smoothly. It seemed that he had perfectly adapted to the gravity here.

Before long, he arrived at the window on the 44th floor and slipped inside.

This was a large computer room. There was no one inside, but all the computer screens were on. Yu Yifeng rubbed his aching head. The concussion he had just suffered still had some slight after - effects, but he was recovering quickly and it was generally not a big problem.

He composed himself and found that this was actually a monitoring room. All the surveillance cameras in the building could be seen here. These cameras covered almost every corner. On the central screen, there was a cross - sectional view of the Central Building, with a large number of red dots drawn on it. One of them was the location where the bomb had just exploded.

"What is this? A map of the remote - controlled bombs' locations?"

Yu Yifeng was full of doubts. He studied it briefly. If one red dot represented one bomb, then these bombs almost covered all the positions where one could enter the building. That is to say, no matter from which place one tried to break in, they might be bombed!

"Why show this to me here? What does Calvin mean?" More and more doubts filled his mind. He quickly scanned the other screens. He was shocked when he saw the scene: more than twenty thousand ordinary people were crowded in a lobby, and a blonde woman was giving a speech at the front.

"What are they doing? Holding a lecture? Brainwashing, or having a class?"

Calvin had taken these hostages. Was it just for a class? Yu Yifeng was getting more and more confused.

Subconsciously, he compared the cross - sectional view of the bombs. In an instant, his heart leaped to his throat. There were more than fifty red dots arranged in the lobby!

That is to say, there were bombs all around these people!

He clenched his fists tightly. Although he was extremely angry in his heart, his mind suddenly became clear. All these were deliberately shown to him by Calvin. The reason was still unclear. He couldn't completely disbelieve it, but he couldn't believe it all either.

"Calvin, I know you can see me! Why are you doing this!" Yu Yifeng shouted loudly.

"What on earth do you want?"

"Do you want to kill all of humanity?"

Suddenly, a deep male voice came from the nearby broadcast. "Captain Yu Yifeng! Long time no see."

"The captain of the First Special Forces..."

"The first person to be transformed by the Perfect Element..."

"The first - superhuman!"