Science and technology is the primary productive force, and now the science and technology mastered by Xue Chen has been stagnant, relying on the princess, I am afraid that there will not be an inch of progress in hundreds of millions of years, of course, if Xue Chen's immortal-level basic technology wants to be improved again, unless a large number of top geniuses like Tony emerge, it will be extremely difficult every 10,000 years.

There are many ways to improve, and Xue Chen has a good idea in his mind, he plans to cultivate four different types of alien civilizations while cultivating human civilization, so that they can live in a small galaxy.

Only competition will have pressure, and pressure will burst out the greatest inspiration.

This is what Xue Chen really thinks.

300,000 people, Xue Chen divided them into three parts, one part will receive Xue Chen's absolute support in science and technology, the other part will not receive even the slightest bit of scientific and technological support, but will teach them the method of cultivation, and the last part will provide some scientific and technological support, but will not teach cultivation.

They will be divided into three different planets, and time will tell which of them is the most suitable helper for Xue Chen.

In ten years, 100,000 humans supported by Xue Chen's technology soon ruled the planet they occupied, and the infinite resources and vast land drove them to continue to reproduce, and in just ten years, the planet named S1 had 700,000 people, 90% of whom were children under the age of ten.

(s2) The people who have obtained the cultivation method but have not received the support of Xue Chen's technology can only rely on their personal memories to develop the basic heavy industry, but the other indigenous creatures on the planet are too strong, and they don't even have time to develop a decent steam civilization.

With the passing of those knowledgeable adult men, it is unknown whether the descendants who have grown up in cultivation will inherit those technologies.

(s3) As for the latter civilization, it is relatively ordinary, they have built a city that is not much different from the 19th century, and they have barely established themselves on the planet, because they believe that the 'gods' have always stood behind them, so the fighting spirit of these people has always been high, and the number of people has remained basically unchanged for ten years, and the number of deaths and new births has remained relatively balanced.

While cultivating, Xue Chen quietly observed their development, the four alien civilizations were also developing in an orderly manner, and according to the current situation, it was estimated that they would encounter them in 10,000 years.

Five hundred years later, the S1 civilization has completely occupied the entire planet and has begun to travel far into the universe, having successfully covered its sphere of influence within 50 light-years.

The S2 civilization is a hundred flowers blooming, ninjutsu, cultivation, refining and other different cultivation systems burst out with dazzling brilliance, and the scientific and technological civilization has completely declined on this planet, except for some daily supplies and can vaguely see the shadow of science and technology, there is no trace of anything else.

During this period of time, many earth-shattering geniuses also emerged, the most talented of which was named Dalles, who was able to travel the universe and make interplanetary leaps in just five hundred years, and according to Xue Chen's judgment of his strength, he had at least reached the stellar level.

And what he cultivates is cultivation, that is, the method of the Yuan Shen and the Yuan Fetus, Xue Chen just taught them some basic methods, and they really have to rely on their own comprehension, this person's talent is so high that Xue Chen is beyond his reach.

For this reason, Xue Chen also deliberately appeared, accepted him as an apprentice, and gave him a lot of elixirs, just so that his strength could improve faster, and at the same time, he would also learn from his cultivation experience for his own enlightenment.

In the end, the S3 civilization finally gained a foothold in the planet, but the continuous conquest of civilization led to the great dispersion of its power, and the level of technology in 500 years was comparable to that of planetary stars, and it was able to carry out short-distance planetary flights, but there were an astonishing number of hundreds of countries, which were comparable to those of the earth at that time.

Three thousand years later, the S1 civilization with a unified power finally declared its split, and they have been expanded faster and faster, and their internal belligerence began to strengthen, and the S1 civilization was based on peace as its racial purpose in the very beginning.

In this way, the militants and anti-war factions launched a fierce conflict, the war spread to all planets within 1000 light years, at least 50 billion human beings died in this war, and the civilization of S1 was almost destroyed, but technology did not show leapfrog development as Xue Chen imagined, but fell into infinite regression.

In desperation, he had to intervene to stop the war, and it can be said that the test of the S1 civilization basically failed.

On the other hand, the cultivation civilization has become stronger and stronger with the passage of time, although the number of people has been controlled within 10 billion people, but the number of strong people is getting more and more, and the strongest of them, Dalles, has now cultivated to the realm of the unity of the primordial gods, and the stars fell with a wave of his hand, which was terrifyingly strong.

And a strong man like him, there are even eight people, these eight people have occupied the entire star field for thousands of years, all the rising stars have fallen under their divine power, and as a last resort, Xue Chen reappeared and set up the 'Divine Gate', as long as he reaches the realm of the standard of the Dalles Nine People, he must step into the Divine Gate and not interfere in the affairs of the world.

The so-called Divine Gate is not something else, it is the world inside Xue Chen's key.

For thousands of years, the space inside the key has expanded again, and at this time its area is unimaginably large, with a height of 800,000 kilometers, a length of 800,000 kilometers, and a width of 800,000 kilometers.

In the center of the entire space, a tall giant tree exudes a white luster, shining this turbid world, and around this giant tree, there are palaces of different sizes and lusters, and there are thousands of them.

Looking at the appearance design of the palace, it is no different from the design of the ancient Greek palace, I can't imagine that in just a few thousand years, the original six ordinary gods have developed so many descendants, and looking at its charm, it is obvious that the strength has not only not fallen, but has gone further.

And the reason why they went further was also one of the reasons why Xue Chen put in Darles and other humans whose strength had reached a certain level.

Because the turbid aura outside the key is not useless, but an excellent thing for cultivation-Chaos True Qi, and in the center of the space there is the majestic life qi emanating from the Soul Tree, which can be understood as spiritual energy.

With the combination of the two, this place is indeed a good place to practice, and Xue Chen's reason for being so enthusiastic is also because it seems that the stronger the creature strength in the key space, the faster the energy of the key seems to increase, which is something he can't ask for.

During this period, Xue Chen also went in and out of some movies or comics that were not particularly difficult, but there were magical items in and out, but unfortunately, the magical items in it could not act on him, with Xue Chen's current strength, those items that could control time or space in movie time were more like confusing ordinary people, and had no effect on him.