With a shrill whistling sound, the high-explosive bomb dragged the orange-red tail flame and slammed into the rattan wall in front of the minecart.

The flames burst into flames in an instant, quickly sweeping and spreading along the dry rattans.

After only a short period of burning, the rattans began to shake as if they had come to life in an instant.

The harsh grinding sound pieced together the indistinct syllables and formed a thick sentence that expressed the mood of the dungeon master's fucking -

"Lu Bing-I'm your uncle-"

As the rumbling voice landed, the entwined rattan scattered and separated, making way for the mining trucks to pass through.

"I politely honked the horn before, but you ignored me......"

Lu Bing muttered quietly in his mouth, urged the accelerator under his feet, and drove the mining truck towards the exit!

Not long after leaving the exit of the vine wall, the plummeting temperature caused a layer of frost to pour on the windshield of the truck.

Fortunately, the mining truck has also been modified, and after closing the windows around the perimeter, it can barely maintain the temperature in the cab.

Although it was also very cold, it was much better than when Lu Bing drove a convertible car and directly felt the embrace of nature.

"Huh......" looked at the white breath exhaled in front of him,???????????????? Xu Xiaoxiao glanced at the land mecha behind him with some concern:

"I forgot to think about the sudden drop in temperature...... Old man, they stay in the mecha, they won't lose temperature, right? ”

"......No," Lu Bing replied weakly, "The driving principle of the Lu Xing mecha is essentially close to that of steam drive, as long as the fission reactor does not stop, the two of them will not lose temperature......

Probably feeling Xu Xiaoxiao's concern, the on-board communication of the mining truck also rang at this moment, and when he listened to it, he found that it was the communication from the Lu Xing mecha.

The old man's voice came out of it, revealing a calmness unique to biochemical people.

"I have just debugged, and most of the performance of the mecha 'fortress' is fine, but some of the transmission parts are still a little inflexible, it is estimated that it is the relationship between the testing machine, and it is not good to run in."

"The temperature in the double cockpit is constant, the temperature on my side is about 22C, and the temperature in the passenger cockpit may be higher, close to 28C......"

Before Hamilton could finish speaking, a cacophony of white noise interrupted his speech, and 173's voice was heard full of nonsense.

"Fatty, everything is normal here, how are you and the keg?"

Xu Xiaoxiao glanced at Lu Bing, and said with a malicious smile: "Don't worry, I'm fine with the keg, and now the minecart is driven by him." ”

"Good...... Then something called me, I still have to be familiar with the operation interface of this turret, I haven't touched it for a few years, and I almost forgot it...... Hey, what's this red button with a clear plastic cover......"

Hearing that the Elder's eyes seemed to be about to press the self-detonation switch, Lu Bing and Xu Xiaoxiao's hearts thumped fiercely.

Fortunately, Hamilton's voice sounded in time to dispel the concerns of the two.

"Rest assured, I've limited the co-pilot's cockpit functions, and the Elder won't be able to start the loader even if he presses the self-destruct button."

"Whew...... That's good. Xu Xiaoxiao and Lu Bing breathed a sigh of relief at the same time.

The vehicle rumbled forward, and soon left the ground and was back on the moor.

Compared to the rugged pavement of the Z-J Underground City and the Fengxian Evacuation Shelter, the area around the Kyoto Underground City is much more empty.

There are large plains everywhere, and there are basically no ups and downs.

It is precisely because of this that the huge mining truck can run all the way unimpeded, running on the scarlet light. At the beginning, Xu Xiaoxiao and Lu Bing were still in a state of high vigilance.

After all, it's nighttime, and it's not only cold outside, but also all kinds of threats.

But after about three or four hours, the two of them were tired.

I don't know if it's because humans haven't been active in the middle of the night for too long, and they don't know the changes in the outside world;

Or they came out at a good time, and they happened not to run into danger.

In short, there is no danger in any situation.

Because he was bored, Xu Xiaoxiao simply turned on the car communication and chatted with Hamilton.

As for the chat partner, why didn't you choose Lu Bing or Elder173?

Nonsense.

One looked at her like a fool, and the other was seen by her as a fool.

Except for Hamilton, a cyborg human, Xu Xiaoxiao had no choice.

There is a sound in the car communicator, which proves that the connection has been connected.

Xu Xiaoxiao chose to open the topic with a normal inquiry: "Hamilton, how is the situation in the rear?" ”

There was silence on the other end of the communication for a while, and then a response came:

"It's cloudless, the vision is clear, everything is normal here, what about you, I didn't touch it???????????????? What's the trouble, right? ”

Xu Xiaoxiao rolled his eyes at Lu Bing, and the small expression on his face was like the children in the kindergarten had found a new partner, a group of proud.

She coughed lightly and replied in a slightly warmer tone than usual:

"There's no problem on my side, it's Lu Bing driving now, and it's not yet time for my shift."

Hamilton spoke:

"Then you can choose to take a break, our journey will last at least seventy-two hours, and it is important to keep a clear mind and sufficient physical strength."

"Hehe...... Xu Xiaoxiao smiled and said tentatively:

"Aren't you sleepy now, why don't you talk for a while? It's boring......"

After speaking, Xu Xiaoxiao stared at the on-board communication expectantly, expecting Hamilton's crisp and neat answer to come from it.

However, to the woman's disappointment, Hamilton seemed to have a broken thread, and he did not reply for a long time.

If it weren't for the fact that the communication light was still on, she would have wondered if the signal had been interrupted.

Just when the woman thought that Hamilton didn't want to accompany her to say something, the biochemical seeker asked from the other end of the communication machine:

"What do you want to talk about?"

The expression on Xu Xiaoxiao's face quickly cleared, and he said with a smile:

"Anything goes...... By the way, how long can the fission reactor of the 'fortress' support the activities of the mecha? ”

This question was also thought of by Xu Xiaoxiao temporarily, she was not familiar with mechas.

"I want to be enough to sustain ourselves until we complete our mission, or the moment we die."

"Although the working principle of the 'fortress' is primitive, it has a large enough fuel rod to support the mech's activity for a long time."

"On the contrary, after the iteration, the land mecha, because the energy core has changed from a fission reactor to a fusion battery, is much worse in terms of endurance......

"Oh......" Xu Xiaoxiao nodded as if he didn't understand, and asked a little strangely: "Then why don't you continue to use the fission reactor?" ”

"Because the instantaneous energy ratio is too low, the ultimate application of fission reactors can only go to the 'fortress' model."

Xu Xiaoxiao smiled embarrassedly: "What, old man, you say human words, I don't understand......"

Hamilton on the other end of the communicator sighed lightly and explained:

"It's just too slow." "The application of fission reactors is nothing more than heating the working fluid and vaporizing and expanding it to achieve the ultimate effect of converting thermal energy into mechanical energy."

"No matter how exquisite the design of the parts is, how detailed the construction process is, it can't change the essence."

"The mech's output power is limited, which means that its speed can never go up."

"That's why fission reactors will eventually be phased out."

"......I see," Xu Xiaoxiao muttered, understanding the reason.

But she soon had new doubts, and there was even a hint of excitement in her tone.

"Old man, since you know the principle so well, can you find a way to reproduce the technology?"

"I mean, if you can iterate the land mecha three more times, develop what you call the 'Plunder Titan', and mass-produce it, then the Terrans will ......?"

"Impossible."

Without waiting for Xu Xiaoxiao to finish speaking, Lu Bing, who was driving, poured cold water on him mercilessly.

"As a guard-type biochemical person, although the old man knows a lot, most of them only stay at the surface."

"Just like you."

"Like me?" ???????????????? A question mark popped up on Xu Xiaoxiao's head, "I'm not a biochemical human......

With a snap, Lu Bing held his forehead with one hand, his face full of helplessness:

"Let's give you an example."

"If you were to be put into the Stone Age now, would you be able to reproduce this mining truck with the knowledge in your head?"

Xu Xiaoxiao did not hesitate, and shook his head very decisively: "I will teach them how to hunt and farm at most......"

Lu Bing shrugged: "Isn't that good?" The relationship between theory and practice is not something that can be achieved with a simple step. ”

"Even if you know the whole story of this mining truck, you still can't make a tire in a primitive era."

"Okay......" Xu Xiaoxiao leaned softly on the back of the chair like a deflated ball.

"Sure enough, it was not unreasonable for the T organization to kill the world's top scientists at the beginning, every step was calculated......

The thing called hope is as precious as dew in the sun, but it has been a long time since the Terrans on this timeline have seen that sparkle.

The atmosphere was gloomy, and no one took up the heavy topic.

In the end, it was only after Xu Xiaoxiao, a nervous woman, broke free from her depressed mood that the suspended topic could continue.

"By the way, I've always wanted to ask ...... before."

"Hamilton, why do you want to follow Lu Bing?"

"What benefits did he give you, which is worth your direct betrayal of Li Zhihao?"

Although Xu Xiaoxiao is not familiar with Hamilton, she still knows the character of the biochemical person.

Influenced by his innate mechanical mind, Hamilton would hardly make a move to break his promises.

In other words, he is a super honest man.

After the old man lost his protection target, Li Zhihao was gracious to him.

That's why Hamilton willingly guards the gate of the Fengxian Vault.

But now, this super honest man not only betrayed Li Zhihao, but also helped Lu Bing to take everything to his hometown.

There's definitely something strange about it!

After Hamilton heard Xu Xiaoxiao's inquiry, he did not answer directly, but asked Lu C:

"Can I say that?"

After getting Lu Bing's consent, he slowly said a few words:

"Because my escort target ......"