With the passage of time, after the breakthrough of the warp engine, mankind has developed a variety of warp engines, and the number of spaceships that can fly at warp speed has gradually increased, making the connection between humans and the Kara civilization increasingly close.

Moreover, with the warp engine, the connection between the Ming Empire and the Kara civilization is no longer limited to the official power, and the people-to-people exchanges have gradually increased with the large cruise ships, passenger ships, cargo ships, etc. that can sail at warp speed, and the influence between the two civilizations is also increasing.

After nearly a hundred years of development, human beings can be seen everywhere on the planet Kara, and the influence of the culture and art of the Ming Empire on the planet Kara has also developed over time, and with the increasing influence of the Ming Empire and human beings, the social form of the Kara civilization has begun to gradually change, and the matriarchal civilization of the Kara civilization has begun to collapse, but this does not have much impact on the queen of the Kara civilization.

In addition, the Kara civilization has also accepted the suggestions put forward by the Ming Empire, and the direction of their civilization research has begun to tilt towards the direction of biology, and in the direction of biology, the Ming Empire has provided a lot of valuable information, as well as Kara's own talent, so that the Kara civilization has made full progress in biological research in just a short period of nearly a hundred years.

As a result, the biological research of the Kara civilization has gone from nothing to now being comparable to the fourth-level civilization of pure biology, and the development of the Kara civilization in the direction of biology is still developing at a very fast speed.

After all, the Kara civilization has a very high talent in biology, which is due to the crooked technology tree of their civilization development, so after the correction of the Ming Empire, the technology tree was rekindled, so the cutting of the Kara civilization is highlighted.

However, the Kara civilization did not give up in terms of mechanics and electronics, after all, before developing their own talents, the Kara civilization was also a mechanical and electronic civilization.

And the card civilization is not a civilization that has developed biological civilization from the beginning, and now it needs mechanical and electronic technology to assist in many biological developments, so their development in this area must also be carried out at the same time, but their development in this area is much lower than that of biology.

After the breakthrough of the warp engine, human society has also had a new round of development, and many technologies that can only be possessed in the fifth-level civilization have gradually been developed, especially in the development of human strengths and military aspects, such as energy attack, the original human energy attack is only laser cannon and particle cannon, and during this time, human beings have also developed magneto-optical cannons, neutron cannons, concentrating cannons, etc., so that human beings have more choices in energy attacks.

And human beings are still in the long distance is the communication you have a new breakthrough, the Ming Empire successfully developed neutrino network technology, is the neutrino communication technology is no longer the Ming Empire military patents, began to expand rapidly to the civilian sector on a large scale, the stability of neutrino communication technology and the quality of communication are not the original technology can be compared, although the neutrino communication technology for the Ming Empire of the people, is still a very high-end technology, in terms of price than the traditional communication technology is much higher.

The price of neutrino communication technology is about three times that of the original traditional communication technology, but this price is still acceptable for ordinary people in the Ming Empire.

But this price is still very expensive for the ordinary lizardmen of the Kara civilization, after all, the income difference between the Ming Empire and the Kara civilization is very large, and the income of the ordinary people of the Ming Empire is five or six times more than the income of the ordinary people of the Kara civilization, and even the humans on the planet Kara are more than four times the income of the lizardmen, so such a price is not very high for humans.

Although the total human population of the Ming Empire is now as high as nearly 50 billion, the Ming Empire is not comparable to the Kara civilization in terms of gross national income, individual average income and personal welfare.

In addition, the Ming Empire has developed a total of four generations in terms of warp engine, in addition to the first generation and the second generation, the third and fourth generations have been developed on the basis of the above, and up to now, the Ming Empire's spaceship of about 100,000 tons can also be installed on the warp engine, which makes the warp engine in the quality of the spaceship The restrictions on the quality of the ship have gradually been reduced, so that all the military spaceships of the Ming Empire can basically sail at warp speed, so that the Ming Empire's control over the surrounding area has been greatly strengthened. The combat capability of the Ming Empire's fleet has also been greatly enhanced.

In terms of conventional engines, the Ming Empire has not made progress for more than 100 years, whether it is conventional plasma propulsion technology or controllable nuclear fusion engines.

Among them, the plasma propulsion technology developed by the Ming Empire at the earliest time has allowed the speed of the spacecraft to reach about 45% of the speed of light, and the controllable nuclear fusion engine has been able to make the speed of the spacecraft reach 75% of the speed of light, but this speed is almost reaching the limit of these two engines.

According to the calculations of scientists in the Ming Empire, the limit of plasma propulsion technology is 55% of the speed of light, and the limit of controlled nuclear fusion technology is about 80% of the speed of light, so if you want the spacecraft to fly faster, humans must develop a more efficient conventional engine technology.

And more efficient engine technology, in the past hundred years of exploration, the Ming Empire also has two research directions, that is, photon engine and antimatter engine, of which the photon engine is more suitable for small spacecraft, not suitable for large spacecraft, because the thrust of the photon engine can not propel a large spacecraft at all, or if it is used on a large spacecraft, it cannot reach more than 90% of the speed of light, and may even be worse than a controllable nuclear fusion engine.

The antimatter engine is the opposite of the photonic engine, the antimatter engine cannot be used on a small spacecraft at all, although the energy and propulsion generated by the antimatter engine are very large, and the requirements for materials are very high, and the small aircraft cannot withstand the huge energy released when the antimatter engine burns when using the same materials.

However, although both engines have their own flaws, fortunately, the two technologies can complement each other, and these two technologies must be developed by human beings, after all, human beings cannot achieve sub-light speed flight at all, and sub-light speed flight is a necessary condition for civilization to be promoted to a sixth-level civilization, even if it is one or two thousand years, human beings must develop these two technologies.