After the unification of the galaxy, the Chinese civilization quickly reached the threshold of promotion to intermediate civilization, and the process of promoting to intermediate civilization was simulated countless times, and at any time it could cut the universe to build an independent space and enter the ranks of intermediate civilizations.

However, the Chinese civilization did not choose to be promoted to an intermediate civilization immediately, but continued to conduct research on scientific and technological breakthroughs, trying to study all known basic scientific and technological branches to the extreme, so as to create a small cosmic space that is closest to perfection, and become an intermediate civilization with unparalleled potential and strength.

With the intelligent civilization of almost the entire galaxy as the foundation, the technology of the Chinese civilization has far surpassed the technology system of the intermediate civilization that Liu Xingchen obtained before, both in terms of quality and quantity.

Every technological breakthrough is very difficult, and those executive civilizations of the former UnionPay have not been able to study a few technologies to the extreme for millions or even tens of millions of years, but now the breakthrough of Chinese civilization is as simple as drinking water.

In fact, many branches of science that analyze the laws of the universe are related, and breakthroughs in one science and technology can often lead to progress in other aspects.

This made some scientists from the original UnionPay implementation civilization sighed, they found that many problems that were not studied thoroughly in the past can be solved at another level, and the original research to the extreme technology can be broken through such a thin layer of gauze paper, but it is a pity that the accumulation of science and technology in their previous civilization is not enough, and they have missed many opportunities for technological breakthroughs.

It can be seen that qualitative changes are also applicable to scientific progress, on the surface it is the level of Chinese civilization in less than a thousand years anyway, but in fact, it is the crystallization of the wisdom of countless civilizations and races in the entire galaxy for tens of millions of years, and the spark of scientific and technological breakthroughs burst out under the scorching fire of hundreds of billions of wisdom.

At the time when the Chinese civilization was frantically judging the technology tree, far away 2.5 million light years, in the huge galaxy cluster called the Andromeda Galaxy in ancient times, several intermediate civilizations were paying attention to the Milky Way.

In fact, these mid-level civilizations have been keeping an eye on the galaxy, looking for opportunities to be able to enter the galaxy, and the distance does exist for them, but it is not a limitation.

Half of the reason why these mid-level civilizations dare not set foot in the galaxy is the deterrence of the superweapons in the former silver alliance, and the other half is the residual power of the mid-level civilization in the galaxy more than 10 million standard years ago.

About 14 million standard years ago, there was a powerful mid-level civilization in the galaxy, how powerful was this civilization?

The total mass of the Andromeda Galaxy is about twice that of the Milky Way, and there are more than a dozen intermediate civilizations, but there is only one intermediate civilization in the Milky Way, and yet this civilization once occupied almost all the galaxies of the supercluster around the Milky Way for 10 million light-years!

Other mid-level civilizations can only retreat in a corner of the Andromeda Galaxy, and they will be driven out or even wiped out at any time, and many mid-level civilizations have been wiped out, and they can't even escape.

It is speculated that the middle-level civilization in the galaxy at that time was infinitely close to the sixth-level civilization, otherwise the strongest fifth-level civilization in the Andromeda Galaxy would not have been beaten to almost perish, and it has not recovered until now.

It was a dark time for all mid-level civilizations.

However, fifteen million standard years ago, the middle civilization of the galaxy changed its expansion trend, shrunk back into the galaxy in a very short period of time, and disappeared after about a million standard years.

At that time, there was a dead silence in the galaxy, and there was not even a primary civilization except for the primitive civilization that had not yet stepped out of the galaxy, but those intermediate civilizations did not dare to set foot in the galaxy, or even dare to approach.

Two million years later, that is, 12 million years ago, many primary civilizations reappeared in the galaxy, but the disappeared intermediate civilization has been silent, and some intermediate civilizations maliciously speculated that they had died unexpectedly in the promotion, but they still did not dare to approach the galaxy easily.

At this time, a nascent intermediate civilization in the Andromeda galaxy saw that the surrounding starry sky was occupied by the old civilization, so they decided to go to the galaxy to explore, they knew that there was a powerful intermediate civilization there, but they had not experienced that terrible era and lacked awe, and even fantasized about inheriting the legacy of the vanished civilization.

This is indispensable for those intermediate civilizations, and the new intermediate civilizations that go to the galaxy to explore are used as tools to throw stones and ask for directions.

In fact, it is true that when the middle-level civilization from the Andromeda Galaxy reached the Milky Way, before it had time to make a big move, it was attacked by the newly formed UnionPay with its newly obtained super weapon, and it disappeared without a trace on the spot.

It immediately shocked some mid-level civilizations that were about to move, and the future of superweapons that zeroed out all existence made them feel the horror of the galaxy again.

Although none of them had ever seen the power of a Level 6 civilization, these mid-level civilizations also speculated that the makers of superweapons were at least at the level of a quasi-Level 6 civilization if they did not become a Level 6 civilization, because the power of 'Zero' had already exceeded the upper limit of a Level 5 civilization.

Millions of years later, UnionPay once again used superweapons to 'zero' a native civilization that was being promoted to the intermediate level, which made these intermediate-level civilizations in extragalactic systems dare not act rashly, and they couldn't determine how many times the superweapon in the Silver Alliance could be used.

This makes all the mid-level civilizations dare not go to the galaxy, and only observe secretly, in addition to the fear of the super weapons in the silver team, but also the fear that the once powerful civilization in the galaxy will appear again to find them to liquidate.

After unifying the galaxy, Liu Xingchen inspected the remains of the superweapon they found through the records of UnionPay, and through the investigation of Liu Xingchen, it can be basically concluded that the intermediate civilization of the galaxy has really disappeared, leaving nothing except a super weapon that can be used three times 'zero', and now everything is gone.

Perhaps fifteen million years ago, they shrank their power into the galaxy in order to fight against an unknown being, and gathered all their forces to fight against it on an equally unknowable level for nearly a million years.

In the end, the intermediate civilization of the galaxy failed, and all the existence of the primary civilization and above in the galaxy was fundamentally wiped out, otherwise the civilization of the galaxy would not have been faulted more than 10 million years ago.

However, the mid-level civilizations outside the galaxy do not know this, and they can only observe from a long distance where they think they are safe, because of the residual power left by the mid-level civilizations of the galaxy and the superweapons mastered by UnionPay.

But now more than 10 million years have passed, the intermediate civilization in the galaxy has not moved, the probability of its existence is already very small, and the residual power left by it has also dissipated a lot, and some intermediate civilizations have bold ideas again, they not only covet the galaxy, but also worry about the legacy that the intermediate civilization may leave behind.