Seeing the students who were so excited and eager to brag in front of others, Zhang Yuan quickly changed the topic: "well, dear students, although this secret is not the top secret, we should keep it as much as possible. It's not appropriate to make it known to all. "

"We have a strategic partnership with TOS civilization. If it goes well, the curvature spacecraft from the interstellar market will take us away for some time in the future."

"But if those spaceships don't arrive on time, we still have to hire the large spaceships of the tosian civilization. After all, they have six motherships. In order to save time, we don't have to build one ourselves In this way, there will be a series of interest exchanges between the two civilizations. "

If a civilization wants to develop for a long time, it must consider all things, big and small.

In the final stage of the whole neutron star collision plan, we need to rely on the power of the interstellar trading market, but we can not rely entirely on the trading place

In case the market breaks the contract, the whole plan will have to be carried out.

The Planetary Fortress, which already has basic power, is moving about 1.6 astronomical units away from the two neutron stars, and its orbit is similar to an ellipse.

The planetary engine on top is only 20% on, and engineers have a final safety check on it.

Talking about this topic, all the students are even more excited. They have not been in touch with the so-called interstellar market. They have both expectations and doubts.

Looking at the students below, Zhang Yuan said: "if the spaceships of the interstellar market arrive on time, then these planetary engines will start on time, cut into the three body movement, and all people will escape from this region. This is, of course, the best solution. "

"As for the worse scheme..."

"There is no cosmic string in this region. If we use the ion engine to propel it, it will take 300 years to travel, which will undoubtedly affect the best observation time. Our probability of getting curvature technology will be a few percentage points lower. "

Seeing that the class time is almost over, Zhang Yuan said, "well, that's all for today's course. Let's finish class, sort out what we have learned, and be interested in reading the literature in this field. Although the development in these years is not too big, the next promotion work depends on us."

"Class is over."

"Goodbye, teacher!"

Several students turned their heads and waved to him.

Zhang Yuan sorted out the documents in his briefcase and was relieved to see all the students leave the classroom.

Being a professor or something It's the first time in the world. Sometimes I feel pressure.

This course is very difficult, these students are carefully selected, at least master's degree However, compared with the high difficulty of extra perception, a large number of people will be eliminated.

In SZU, he not only teaches master's degree and doctor's degree, but also takes charge of undergraduate content, mainly in mathematics and new civilization history.

What teachers teach is not only knowledge, but also the exporter of values.

Nowadays, children's primary and secondary education is completed by robots. Generally, there will be no big problems. The whole process of classified education has been quite mature, robot teachers can complete this work.

But universities are different.

University is an important link from school to society. After graduating from high school, students will get higher freedom. How to adapt to this higher freedom is an important issue. For example, in the past, many excellent students of the earth civilization degenerated in the University. They did well in high school, but the university could not keep up with them. Some students rose again in the University, that is, their subjective initiative played a great role.

In addition, with the increase of learning difficulty, the allocation of social work and other important tasks, university teachers are still human teachers.

Well, this kind of human teachers, of course, the better the moral character, the higher the role of example, the better.

Even the demand for moral character is greater than the academic demand.

If a teacher's butt is crooked, the more knowledge he has, the more reactionary he will be. Of course, a group of students he teaches will become a social trouble.

Zhang Yuan doesn't have much to do now. Apart from teaching, communicating with TOS people and discussing cooperation projects, he will try to learn new knowledge in his spare time. He is also very happy.

“…… The real research task has not really started yet! Ah, I don't know if the spaceship of the trading market can arrive in time. "

Zhang Yuan stretched a stretch, came to the "big canteen", ordered a "golden spicy chicken roast rice fort".

The big screen in front is showing the development of the whole civilization in recent years.

In the past 1400 years, the vast majority of resources of new human civilization have been inclined to the construction of planetary engines. There are not many resources and population for scientific and technological innovation, but the progress in science is not nothing.

The experience accumulated from long-term practice has made a great qualitative change in the field of human engineering. Many spaceships have been upgraded, including transport spaceships with super large carrying capacity and more powerful engines. These experiences are not useless.It can be seen from the TV that countless spaceships come and go over a wooden planet, collecting a lot of nuclear fuel.

The purpose of collecting nuclear fuel is to produce various super large equivalent hydrogen bombs.

There are also various military spaceships with powerful maneuverability. These spaceships were produced in large quantities at a time when relations with the tosian civilization deteriorated

Even if curvature technology is not obtained in this activity, the performance of these spaceships can be regarded as the peak of level 3 civilization!

of course, there is a big gap between Level 3 civilization and level 4 civilization.

If we compare the spaceship of level 4 civilization to "supersonic stealth plane", the spaceship of level 3 civilization is just the propeller plane of World War II. The spaceship of the second civilization is equivalent to a wooden plane that can barely fly.

The fourth level civilization and the third level civilization are sling, even zero loss.

However, the fight between the three-level civilization and the two-level civilization is also a sling, but it is not necessarily zero loss.

This is also the main reason why some fourth class civilizations are unwilling to popularize the technology in large quantities, and even conclude some treaties in the trading market.

Curvature technology has brought about too much improvement in military strength and mobility.

If human beings acquire curvature technology and are promoted to the fourth level civilization, they may also sign a leap in this respect.

As for the rest of the industries, although there has been no significant qualitative change, they have also developed. Every industry has expanded a little bit, and the science and technology tree has naturally grown many buds. Just waiting for an opportunity, can quickly flourish.

"It's not a waste, it's ok Up to now, we should make progress slowly. Where can we make great strides forward? "

After a general overview of the scientific and technological achievements, Zhang Yuan felt quite satisfied.

"Hey, Lao Zhang, where are you eating?"

Just thinking about this, I heard the voice of a capable man. He was the engineer Ye Kaifu, the first pioneers to leave the earth, just like Zhang Yuan.

When Zhang Yuan was still the captain of the Kunlun Mountain fleet, ye Kaifu was his capable general, specialized in mining and other logistics work.

Of course, this kind of talent who is good at mining has been forced to show signs.

Zhang Yuan saw this guy, also showed a happy smile, "it's very rare, today is your holiday? I'll treat you to Golden Chicken Rice

While eating, they chatted casually.

Perhaps because of the influence of the times, among the 500000 pioneers who left the earth at the beginning, the proportion of people who became extraordinary was faster than that of people in other times.

It is true that suffering can promote people's growth.

Zhang Yuan thinks that the proportion of middle-aged and elderly people in this era, that is, those who did not leave with the last spaceship, should also be very high.

In another era, it will be relatively low.