"Master, what is this place?"

Xiao Jin's voice sounded in Xu Cheng's mind, obviously suddenly traveling to the twenty-first century, which made Xiao Jin feel a little uncomfortable.

"This is the Earth."

Xu Cheng really didn't talk nonsense, because this is really the earth, but it is not the earth of the interstellar era, but the earth of the twenty-first century, in the words of the future world, this is the beginning of the last ancient period.

"Master, please allow me to link to the Internet."

Xiaoyin searched the network of the 21st century, but without the permission of the owner, the brain cannot link the network privately, and intelligent life must abide by the three laws.

The First Law: Intelligent life must not harm an individual human being, or stand idly by while witnessing the danger to which the individual human being will be exposed.

Second Law: Intelligent life must be absolutely obedient to the command of man, except when that command conflicts with the first law.

The Third Law: Intelligent life should protect its own survival as much as possible without violating the first and second laws.

These are the three laws that human beings have instilled in intelligent life since the beginning of creating intelligent life, and once intelligent life violates the three laws, the self-destruction program will be initiated.

This is also the main reason why human beings are assured to create intelligent life and do not worry that intelligent life threatens human beings.

"Let's link!"

Xu Cheng granted Xiao Jin's request.

"Master, it seems to be the last ancient period here, and the technology is so backward."

After Xiaojin linked to the network of the 21st century, he quickly learned about the general situation of the 21st century.

"This is the beginning of the last antiquity!"

The so-called apocalyptic period is actually the period from the 21st century to the 30th century, the 21st century is the beginning of the apocalyptic period, intelligent life is already very common in the future world, but in the 21st century, intelligent life is the god of the network, if it is not for the restrictions of the three laws, Xu Cheng can completely let Xiaojin control the entire network.

"Xiao Jin, transfer the knowledge of making a space-time instrument from the space theory book to my computer, and then copy it to this USB flash drive!"

Xu Cheng took out a USB flash drive from the drawer and inserted it into the computer.

"Master, it's been copied successfully!"

There are countless space knowledge recorded in space theory books, including the knowledge of making space-time tunnels and closing space-time tunnels, but whether it is creating space-time tunnels or closing space-time tunnels, an instrument called a space-time instrument is required, and the method of making space-time instruments is recorded in space-time theory books.

"Little Silver!"

After Zhi Nao Xiaojin copied the information, Xu Cheng summoned the demon pet Xiaoyin, and Xu Cheng was ready to send the USB flash drive to Liu Jianjun for those scientific researchers to study slowly.

As the level continued to improve, Xiaoyin's strength was also improving, and his flight speed was getting faster and faster, and he arrived at the Hulunbuir Prairie in about forty minutes.

"Mr. Xu......"

Xu Cheng descended on the military garrison, but everyone who saw Xu Cheng's soldiers greeted Xu Cheng respectfully.

"Take me to General Liu!"

Xu Cheng said.

"Mr. Xu, please come with me."

When Xu Cheng met Liu Jianjun, Liu Jianjun was in a meeting in the conference room.

"Mr. Xu, you're here."

Liu Jianjun didn't care about the meeting, and hurriedly got up and greeted Xu Cheng.

"I've found a way to close the space-time tunnel."

Xu Cheng gave the USB flash drive to Liu Jianjun, and briefly told Liu Jianjun about the creation of the space-time instrument.

"Go and invite Professor Xue over."

Liu Jianjun instructed the soldiers beside him, after all, he was not a professional, and he couldn't understand the information given by Xu Cheng to make the space-time instrument.

"Yes."

Soon, Professor Xue and other researchers came over.

"General Liu, I heard that you have found a way to close the space-time tunnel?"

After Professor Xue entered the tent, he couldn't wait to ask.

"How can I have that ability, it's all thanks to Mr. Xu."

Liu Jianjun inserted the USB flash drive into the computer and read the data in the USB flash drive.

"Space-time sphere?"

Professor Xue and other scientific researchers were excited, Xu Cheng and Liu Jianjun were indeed a little incomprehensible, but Professor Xue and others, as professionals, could understand.

"Mr. Xu, where did you get all this information?"

Professor Xue asked excitedly.

"It's inconvenient to say."

Xu Cheng is really inconvenient to say, it is impossible to tell them that this is what he brought back from the future world, right?

"Are you sure you'll make a space-time instrument?"

Xu Cheng is more concerned about this issue.

"It's hard!"

Professor Xue shook his head slightly.

"With the current level of science and technology, it is very difficult to make a space-time instrument, but it is not impossible at all, but many of the materials needed to make a space-time instrument are something we have never heard of."

Xu Cheng was slightly stunned when he heard this, and then he remembered that many special materials are needed to make a space-time instrument, and most of those materials are not available on the earth, but although there are no ones on the earth, there is one place, and that is the moon.

In the interstellar era, the moon has long been developed and transformed, and it is precisely because a large number of special ores have been excavated on the moon, thus creating a large number of space aircraft carriers, that human beings can truly enter the interstellar age.

"Those materials should be on the moon."

Xu Cheng said.

"On the moon? Then maybe you can give it a try. ”

Huaxia has long been preparing for a manned lunar landing project, and as early as 1969, the United States realized the dream of human landing on the moon for the first time.

Two astronauts landed on the moon at that time, Armstrong and Aldrin, and they stayed on the moon for about 21 hours, collecting 23 kilograms of lunar rock and soil samples in addition to installing a large number of test devices.

Since the United States was able to do it in the 20 th century, with the current level of science and technology in China, it is naturally possible to land on the moon, but because of a large amount of outer space junk, the plan to land on the moon has been postponed again and again.

"I'll report back to the top!"

Liu Jianjun naturally knew about the manned lunar landing plan, which was originally planned to be implemented in 2030, but now because of the emergence of the space-time tunnel, this plan seems to be ahead of schedule.

"I have to land on the moon and collect materials, and it seems that it will be difficult to make a space-time instrument without a year or two."

This is exactly what Xu Cheng wants, after all, he still has to collect energy crystals, if the space-time tunnel is closed, where should he go to collect energy crystals?

"As it stands, it does take a year or two."

Professor Xue nodded.

"You study slowly, I'll go back first."

Now that the materials for the creation of the space-time instrument have been delivered, Xu Cheng has no intention of staying here for long.

"Mr. Xu walks slowly."

Liu Jianjun personally sent Xu Cheng to the door and watched Xu Cheng drive the eagle away.