China's Beidou is divided into three steps.

In 2000, Beidou-1 provided services to China.

The three satellites of [Beidou-1] are all geostationary orbit satellites, and the short message communication function of this system is unique to Beidou people.

Beidou short messages can release 40 words of information.

Short messages can not only locate but also display the location of the publisher, which is a two-way communication function.

Two-way short digital message communication can be realized between users and between users and between users and the central control system.

In contrast, GPS is only one-way.

Only 40 words can be sent is not a disadvantage of Beidou short messages, on the contrary, through this minimalist mode, Beidou short messages occupy very few resources.

In the ocean, desert and wilderness, where there is no communication and network, users who have installed Beidou system terminals can locate their own location and be able to release text messages to the outside world.

Fishermen who go out to sea can report their safety to their families through Beidou short messages.

In particular, it is worth mentioning that the Wenchuan earthquake in 2008, this seemingly simple function, bought golden time for search and rescue.

The first batch of search and rescue personnel from all walks of life cooperated with each other through Beidou short messages.

In 2012, Beidou-2 provided services to the Asia-Pacific region.

At this time, Beidou has gradually matured, and no matter how much Galileo negotiates, he can no longer match it.

In 2020, [Beidou-3] will provide services to the world.

Global networking is a big deal for Beidou.

[Beidou-1] uses the geostationary orbit satellite that is more commonly used in the world.

Beidou's three steps have taken a different path of complete autonomy.

On June 23, 2020, the 55th Beidou Navigation Global Networking Satellite was launched at the Xichang Satellite Launch Center, completing the global networking of China's Beidou.

At this time, China's Beidou has included geostationary orbit satellites, inclined geosynchronous orbit satellites and medium-circle earth orbit satellites.

The completion of the network does not mean that there is no need to launch satellites.

Satellites have a useful life.

By the time the last networking satellite was launched, the first one had been in operation for many years.

In order to ensure the stability of the Beidou system, in addition to backing up satellites and constantly testing, it is also necessary to launch new satellites to update and upgrade services.

In the first two years of the success of the global network, no new Beidou was launched.

In May 2023, it will start to launch again, and Beidou will be launched one after another.

By 2023, the number of calls to Beidou navigation and positioning will exceed 300,000,000,000,000 times per day.

And that's just the number of calls to an app.

In the 2020s, with the global networking of Beidou, Beidou not only shines in the fields of transportation, agriculture, fishery, forestry, and electric power, but also shines in the International Search and Rescue Satellite Organization.

In the 2030s, Beidou will become the core support for the intelligent and unmanned development of human beings, achieving full coverage, including the basement, deep sea, and deep space that are not easy to navigate in the 2020s, serving the whole earth and enriching all mankind.

With the establishment of the human lunar base, the scope of Beidou services is no longer limited to the earth.

In the post-Beidou era, Chinese astronauts have set their sights on the sea of stars and ushered in the third national strategy after [two bombs and one satellite] and [Beidou navigation].

A manned landing on the moon will be completed in 2028.

A lunar base was established in 2030.

……

Due to Liang Xinghuo's relationship, Mi Duoduo's brain group contains most of Liang Xinghuo's family members on Earth.

The highest level of being a friend - your friend is also my friend; Your family, and mine.

Here, Liang Xinghuo threw her a top-secret file.

Over there, Wu Zizi looked for Mi Duoduo and said that Liang Xinglan wanted to project over and see where her sister lived.

Mi Duoduo didn't agree, and replied directly, saying that he had been busy for a day today and was already lying in bed and preparing to sleep.

Such an answer, of course, can avoid the first day of junior high school, but not the fifteenth.

But there is no better way for Mi Duoduo.

Anyway, she is first and foremost Liang Xinghuo's best friend.

Before obtaining Liang Xinghuo's consent, Mi Duoduo did not intend to pull this line.

The supreme state of being a friend - being as good as a person, but also knowing how to respect each other's boundaries.

Mi Duoduo's gender relationship is handled in a mess, and he cares for Liang Xinghuo, the best friend who was "raised" by himself.

The next day, Mi Duoduo found a suitable time to chat with Liang Xinghuo.

"Huo, I think you can take a look at this file for yourself."

"Is it written in the file why Mr. Liang and Ms. Wu left me alone on Mars?"

"Not really. This file doesn't deal with what your mom and dad were thinking about at the time. It's just some test reports before and after you and your brother were born. ”

"Sister Mi, you know what I want to figure out the most."

"I know, but Huo, there's a point I haven't shared with you."

"What's the point of view?" Liang Xinghuo asked.

"You know, I've always been from your point of view, I was, I am, and I will be." Midodo tried to lay a bottom.

"Sister Mi, as soon as you foreshadowed me, I suddenly didn't want to hear what you were going to say next."

"You don't want to hear it, I also want to say, let's put everything aside, regardless of the reason or what happened at the time, let alone whether your family's choice is right or wrong, your brother is innocent. He, like you, has no choice. ”

For a long time, Mi Duoduo and Liang Xinghuo have the same hatred.

If it weren't for reading that file, Mi Duoduo wouldn't have persuaded him.

That's how things happen in this world sometimes.

Before coming to Mars, Midodo felt that the men around him had problems.

After arriving on Mars, she found out that there was still a vice-captain who had always put her at the top of her heart.

She tossed all kinds of things on the road of love, and at the beginning, it was not that she didn't mean to show the vice captain.

This wooden man, watching her get closer to the other team members, obviously didn't have anything yet, so he said, "I will wish you happiness".

Looking back now, I realize how much tolerance this person gave her.

She didn't care what she thought, it was only after bleeding in her back that she could not shed a single tear on the surface.

"Sister Mi, I understand what you mean. However, even if he was a baby and had the same choice as me, what about the rite of passage? ”

Liang Xinghuo asked Mi Duoduo rhetorically: "I know that there is still a him in this world, no matter how sad or collapsed, I am desperate to find him." The result? I can't find this person directly. He's an adult, even if his family wants to protect ......."

"Huo, there should be some special circumstances here, I can't get an accurate conclusion just by looking at the top-secret documents. You can try to talk to your great-grandfather, or you can accept Liang Xinglan's projection application and ask him personally. ”

"Sister Mi, how do you know about the projection application?"

Liang Xinghuo couldn't help but wonder, she obviously refused to apply for projection at the Mars relay station.

"Because your mother came to me and said that Liang Xinglan wanted to project it to the place where we live." Mi Duoduo reasoned casually, and he could figure out what the situation was.

"It's true! I actually ran to look for you, I told them at that time that I asked Liang Xinglan to invite me to his living environment as a guest, and I never got a positive response. ”

"Okay, you listen to Sister Mi's advice and take a look at the file seriously. After reading it, whether you want to accept it or not, it's not all in your thoughts. ”

Mi Duoduo projected the top-secret document: "You sent me this file before, didn't you just want me to help you see, is there any content that you can't face?" ”

Mi Duoduo pulled Liang Xinghuo to his side and accompanied her to watch it again.

After reading it, Liang Xinghuo didn't say a word for twenty minutes.

After a long time, Liang Xinghuo finally spoke: "Sister Mi, you reply to Mr. Liang and Ms. Wu, just say that I have lifted the projection restriction on Liang Xing's blue brain group and added him to my family contact module again." ”

"Do you want to meet the whole family?"

"No, I don't. I want to see Liang Xinglan and see what he looks like now. ”

"If you just want to see your brother, wouldn't it be better if you just lifted the ban and looked for him?"

"I don't, I've been looking for him for so long. This time it was him who came to me. ”

"Huo, I really didn't think that you would care about such a small point."

"This is obviously what you taught me, Sister Mi! Whoever is serious first loses, and whoever takes the initiative first loses. ”

"Huobao, I'm talking about love."

"What's the matter, you obviously said [when you met your brother]."

"I don't have a brother, and the brother I'm talking about is definitely not a brother." Mi Duoduo took two steps forward and gave Liang Xinghuo a hug: "Okay, don't be nervous, just talk about it." ”

"How can I be nervous?" Liang Xinghuo refused to admit it.

"What you have, as long as you encounter something related to your family, you can only maintain a superficial calm." Mi Duoduo let go of his hug and said to Liang Xinghuo: "If you really mind, then I'll go and add Liang Xinglan, and when he projects over, I'll call you over." ”

"No, you don't."

At this not special moment, Liang Xinghuo suddenly made up his mind.

In front of Mi Duoduo, by understanding the restrictions on Liang Xinglan.

"Don't tell my parents, I won't take the initiative to tell Liang Xinglan, as long as his younger brother still wants to find my sister, then I won't refuse."

"Okay. I really envy the senseless tsundere of you young people. ”

Liang Xinghuo glanced at Mi Duoduo and confirmed that she was sincere, and she didn't mean to ridicule, so he didn't say anything more.

Just looking at this kind of kung fu, Liang Xinghuo's brain space began to beat again, and the prompt he had had before - [Liang Xinglan sent a holographic projection request from the earth].

Liang Xinghuo thought that Liang Xinglan would look for her, but he didn't expect it to be so fast.

Since her younger brother on Earth is so active, her sister on Mars, who is six minutes older, is no longer able to hold a shelf.

Liang Xinghuo chose to receive it in seconds.

Liang Xinglan's virtual projection appeared in the place where she and Mi Duoduo lived.

"I'm Liang Xinglan, I want to exchange my life with you."

This was the first sentence Liang Xinghuo heard from his younger brother's mouth.