There are three conditions given by the alliance, the first is the speed limit, they do not require the operation method, but the spacecraft must be able to reach a speed of more than 80% of the speed of light, and can operate stably, at least four light years can continue to fly a distance, it is not feasible to launch something like a cannonball. The second is that the spacecraft must be able to carry people, a fully functional Void spacecraft, not a block of iron that only accelerates. Article 3 ...... Humans are not allowed to directly use the components of the Ascender spacecraft, and spacecraft must be 100% made by human technology to pass the assessment.

"How much time do we have." Sun Tan spoke, he may be the only one among the people present who thinks this plan is feasible, he has been in contact with the lighthouse for the longest time, and his horizons are broader, it may be difficult to reach the speed of light realm, but it is not necessarily completely impossible, after all, the lighthouse is still in their hands.

"One hundred years." Mark replied, "In terms of the time of the solar system." In fact, this time was set by Mark, and the alliance originally gave him more time, but the time chosen by Mark had another meaning.

Humans are short-lived creatures, compared to those creatures that can live for tens of thousands of years, hundreds of thousands of years, it is simply fleeting, not to mention the monsters of the first nuclear people, they can also carry out core inheritance, theoretically immortal creatures, for them the dusk is close at hand, but human beings are different......

Mark believes that even if the news of dusk is announced now, it will not cause too much turmoil in the human world, at least it will be far less than the impact of this abduction incident, a million years is too long for human beings, no one will worry about such a distant thing, human civilization has not been born for less than 10,000 years, we have completed many feats that were impossible to accomplish in the eyes of our predecessors, who knows that there will be no way to solve it in the future?

But if it is shortened to a hundred years, what will be faced in two or three generations, this matter is closely related to everyone.

"It can only be said that it is difficult, and the difficulties we have to face are unimaginable, but it is not impossible." As soon as Sun Tan's words came out, it caused an uproar, and there were endless discussions in the audience.

There are experts and scholars in various fields, many of whom are experts in aerospace and rocket dynamics, this period can be said to be the period when the academic community has received the greatest impact, frequent contact with foreign civilizations has brought a large number of novel and subversive theories, and the idea of getting alliance science and technology is not only thought of by Mark alone, which is what countless scholars on the moon dream of, and they try their best to dig out more things in a short contact, and many people have already achieved outstanding results. Not to mention that some of them were already very experienced, some of them had worked under Qin Yi and had been stealing the alliance's technology since that time, and some had participated in the over-distance communication plan led by Sun Tan.

Although it was difficult to achieve light speed flight, there were many feasible ideas, and Mark began to talk enthusiastically.

Mark wants to see the same scene, the results of the peace talks have been announced, the next task is handed over to them, the second half of the meeting directly turned into a science and technology seminar, Mark asked everyone to record their ideas, even if it is inspiration or some exaggerated assumptions, the big wave can always filter out a few feasible solutions.

In just half a day, they collected nearly 10,000 plans, and Mark glanced at the folder that occupied half of the conference room, so he asked Sun Tan and several expert groups in the spacecraft field to become an audit team, carefully screening each plan in it, the time can be slower, but not to miss valuable things.

After the meeting, the scholars' discussion was not interrupted, the conference hall was still boiling, indeed, the conditions given by the alliance were too tempting, Sun Tan's words were even more morale-boosting, maybe it was still difficult for their ideas to be applied to the practical field, but with this spaceship in their hands, maybe they could solve it by studying it.

Mark left the conference room first, and Sun Tan came out after him, and the two of them tacitly found a secluded corner and sat down.

They used to chat like this when they used to go to school, there was a small warehouse in the school as long as the two of them would go, and whenever they had troubles or wanted to be lazy, they would run there, and after coming to the moon, they didn't have a small warehouse, so they often ran to a tavern, which was a very small, very deserted and dirty shop, but they left a very good memory there, and the conversation in the tavern was not as energetic as when they were students, most of them were very tired, and they said to each other that they were tired, and the other party also said that they were tired, Then came drinking and reminiscing, and in this way Mark spent the most difficult time of his life, from a soft egg with no ambition and perseverance, full of student spirit, to a man who stood up to the sky, and his body was engraved with the mark of the moon...... Resilient, optimistic and calm.

Now they were together again, no school, no tavern, not even a glass of wine at hand, but they still had a good conversation.

After chatting for a while, Sun Tan thought with a sad face, and thought that Mark had told him about the situation of the lighthouse, maybe after that, human beings would no longer be able to rely on it, and the alliance didn't know if it would go back on its word.

Mark wasn't too surprised, his face looked very flat, as if he had known about it for a long time.

"I already know." Mark smiled bitterly: "I don't know if the delegation said that it was leaked, or if the barrier on the moon side was infiltrated, in short, the alliance side already knows about the situation of the lighthouse, and it also knows...... It's not humans who are controlling the ship. ”

"Why is this happening...... Sun Tan was slightly shocked, and then guessed the reason: "I know why...... There was a time when the lighthouse had lax its defenses against the outside world. ”