Professor Ma saw Li Ping leaving, and he also hurriedly followed, he knew what Li Ping was going to do, on the surface, Li Ping obeyed all kinds of orders from his superiors, but in some things, it may not work if his superiors came in person, which may be the reason why Li Ping is still single.

"Okay, I understand, thank you for the leader's decision, I will explain it to you." When Professor Ma returned to the laboratory, Li Ping was about to hang up the phone.

Professor Ma did not directly ask Li Ping's superiors about their decision, and Li Ping's thanks have explained a lot of questions.

"Let's stop for a moment, and I'll tell you something." Li Ping came out of the office, did not hesitate, and greeted the researchers in the research room.

The researchers had long been accustomed to Li Ping's way of giving notices, and they all put down the things in their hands and gathered, Professor Ma stood in front of everyone, he knew what Li Ping was going to say about something.

"Everyone knows that Professor Liu Xuan, as the chief designer of this time, also rushed to the front when there was an accident and set an example, but the amount of radiation is too much, it has far exceeded fifty Ge, and Professor Liu Xuan has not survived for a week." Li Ping still explained Liu Xuan's current situation to everyone first.

Hearing this, everyone was silent, and they had already heard about Liu Xuan's situation. After a year of contact, they all know Liu Xuan's way of dealing with people, everyone's impression of Liu Xuan is good, all of them are full of sadness, Professor Ma stood in front and sighed lightly.

"The decision of the leaders above is to put Liu Xuan under ultra-low temperature protection while Liu Xuan is not completely brain dead, and when there is a medical treatment to save Liu Xuan in the future, we will unfreeze him. He will be waiting for us in the future, and we may not have the chance to see him again, but his life is still alive, and that's enough. Li Ping said that at the end, she couldn't control her emotions anymore, stretched out her right hand to cover her mouth, didn't look over, and walked back to the office quickly.

Professor Ma looked at Li Ping who was far away, then looked back at the vacant position next to him, and finally took a deep breath and returned to his research position, he wanted to do something for the future Liu Xuan in advance, this is when Liu Xuan was still there, the problem they discussed, now that Liu Xuan is gone, he has to complete it alone.

The "Sea of Stars" memorial hall in the underground city is also introduced by Liu Xuan.

A few months later, under the control of the control room, the craft was safely returned to Earth, and the success of the experiment confirmed the widespread use of nuclear fission engines. Liu Xuan: In the end, Liu Xuan's key drawings were also closely protected.

All of this has nothing to do with Liu Xuan, and the bond between Liu Xuan and this era has come to an end.

North America, home to the world's largest frozen protection organization.

A plane landed slowly, and the plane was carrying Liu Xuan's broken body, where he was about to enter a long sleep, and the period of long sleep was until the medical level could reach the level of reviving Liu Xuan. The country paid for the freezing for a thousand years in one go, and according to the country's intentions, if such medical technology has not been developed in ten centuries, it means that the earth has gone to extinction, and there is no need to save Liu Xuan at that time.

A team of soldiers had already been prepared, as soon as the plane landed, someone took Liu Xuan to the freezing room, now the time is pressing, if it is too late to freeze when Liu Xuan completely loses his life, after all, Liu Xuan is already too seriously injured, and it is too difficult to wake up.

All the steps of freezing are being carried out in a tense and orderly manner, Liu Xuan's body was put into a special container, a special liquid was added, and it was instantly frozen to close to absolute zero, just a few blinks of an eye, Liu Xuan was completely frozen into the giant ice, and all that remained was to wait for someone to wake him up.

The name Liu Xuan is like a rising star in the starry sky, although it is not very dazzling, but it indicates the arrival of a new era.

"Professor Li, come here, there's another message from the wormhole." As soon as Li Ping's bracelet communication was opened, the observer's anxious voice came out.

Li Ping was being questioned in front of a group of people at this time, and the answer to the bracelet message was agreed.

"Professor Li, thank you for your contribution to the Federation, we agree to your request, Professor Ma's side is up to you, you go back to solve the problem of information first, and the time of your resignation is up to you." In front of Li Ping, a leader-like person said.

Li Ping was overjoyed, and after thanking the leaders, he hurried back to the research room, just like when Liu Xuan first came, all the researchers were around the observer, looking thoughtfully at the words on the computer screen.

Li Ping squeezed forward, and the screen was still the same obscure text, which was the text used in the first agreement, which meant that it was sent by the first civilization Pegasus civilization.

It's a completely different format from last time, just a simple sentence, Li Ping sees urgency in it, but she still doesn't understand what it means, and she doesn't know what happened to Pegasus.

Professor Ma didn't come around, since Liu Xuan fell into a complete sleep, Professor Ma has been studying something, day and night, forgetting to sleep and eat. I heard that Professor Ma also asked an acquaintance to build a tombstone, Li Ping was very worried about Professor Ma's state, and Liu Xuan's departure hit Professor Ma too hard.

"Professor Ma, this is the decision of the superiors." Li Ping walked up to Professor Ma's side and handed the document in his hand.

Professor Ma took it and looked at it carefully, shook his head, returned the document to Li Ping, and said: "I have lived for sixty years, I have seen too many things, the future is not attractive to me, and old scientists like me are also lagging behind in the future, you go, you are still young, I still have nothing to do, I just hope that I can finish this matter before I go to the grave." ”

"But......." Li Ping wanted to say something, but was directly interrupted by Professor Ma.

"I'm sorry to him, but my old friend and his bond can only be preserved for this century. Give this to you, keep it, and give it to him when the time comes to see him. After Professor Ma finished speaking, he took out a cylindrical object and handed it to Li Ping.

After Li Ping took it, she wanted to persuade Professor Ma, but Professor Ma didn't give her a chance and directly kicked Li Ping out of his research room.

Li Ping reluctantly returned to his office and carefully looked at the things in his hand, the cylinder with a diameter of only about five millimeters and a length of only five centimeters was very meticulous, and some characters were engraved on the surface, which Li Ping couldn't understand. She sighed, put her things away, left the research room, went to her residence to pack a few things, and went to Liu Xuan's residence to take a look around, and took away the photo that Liu Xuan put on the bedside table.

Two weeks later, when the news of Pegasus came again, Li Ping stepped down, said goodbye to Professor Ma again, and left the underground city, not knowing where he went.