Xinghan Solar System Earth.

Qin Yi and Wen Xueying walked hand in hand on the Great Wall, the mountains were stacked and the Great Wall was like a giant dragon lying on the earth, majestic and magnificent, majestic and mighty.

At this time, it is the golden autumn and October on the earth, Qin Yi's location is exactly the area of the former Badaling Great Wall, from the top of the Great Wall, the mountains are full of gold, after more than 100 years of recuperation, the earth's ecological environment has also been greatly improved, the vegetation coverage rate is extremely high, so that even the earth's oxygen content is rising.

"I have been to the Badaling Great Wall many times, although the current environment is much better, and the scenery is much more beautiful, but there are no tourists on this Great Wall, and I always feel that something is missing."

Wen Xueying looked at the scenery in the distance, and then looked at the empty Great Wall, and always felt that something was missing.

She grew up here in the imperial capital, and the Badaling Great Wall naturally did not come less, but in the next few hundred years, she never came again.

This time, Qin Yi also brought her with him to the earth, and together they went to the Badaling Great Wall to take a tour, take a look, and relax, this Great Wall is one of the few remaining human buildings on the earth.

The once prosperous city is now in ruins, drowning in dense jungles and weeds, the roads, bridges, etc., which used to extend in all directions, have also been covered with weeds, and there are no dams or bridges over the great rivers.

Only the Great Wall, the Forbidden City and other buildings with historical significance are still maintained by Xinghan every year and remain intact.

"Less popularity."

Qin Yi smiled and said: "Wait a little longer, when the ecological environment of the earth is better, we will migrate to the earth, now the earth's environment is still too fragile, and the time for cultivation is not enough." ”

"Whew~"

As soon as Qin Yi's words fell, there was a tiger roar from the mountains not far away, this sound was very loud, like a lion's roar, which could be transmitted to more than ten miles away.

In the sky, geese flew south, and there were bursts of clear chirping, as if responding to the roar of a tiger in the mountains and forests.

"Tsk, it's only been more than a hundred years, I didn't expect there to be tigers in the mountains and forests here."

Hearing the roar of the tiger, a smile appeared on Qin Yi's face.

In the past, the only wild tigers on the planet were Bengal tigers and Siberian tigers, and other wild tiger populations have long since perished.

However, the population of tigers in history is actually very large, and there are Siberian tigers, South China tigers, Xinjiang tigers, Bari tigers, Indochinese tigers, Sumatran tigers, Caspian tigers, etc., which can be almost all over the entire Asian continent.

However, due to the overhunting of humans, the tiger was once on the verge of extinction, and in a short period of time, the population and number of tigers have rapidly decreased sharply, becoming an endangered wild animal.

Unexpectedly, now, just after more than 100 years of recuperation on the earth, the tiger population has been active to the Badaling Great Wall, where there were no tigers before.

Qin Yi estimates that tigers are likely to have spread to every corner of the Asian continent again, which is enough to show that the earth's ecological environment is rapidly recovering.

"For these wild animals, the world without humans is paradise."

Wen Xueying smiled and said with feeling.

"Let's go, there's nothing to see, let's take a look at the construction of the Earth's energy defense system in space."

Walking around the Badaling Great Wall very casually, looking at it, and soon Qin Yi also remembered something, today the outer space of the earth is installing an energy defense system.

In the past few decades, the Earth Federation has been suffering and developing extremely hard and slowly, but Xinghan's side is still developing at a terrifying speed.

This energy technology has been developed to the second level, and the energy shield technology has been mastered, and this technology can not only be used to protect space warships.

It can also be used to protect space ports, space factories, space buildings, etc., and can also be used to protect living planets.

After decades of research and development, Xinghan's scientists have also developed an energy defense system that can be used to protect the living planet.

The living planet is very precious, but it is also very fragile.

Especially in the war of the interstellar universe, the confrontation between the cannons of the giant ships, and the huge energy attacks crisscross the void, it would be better if it was far away from the living planet.

If it is very close to the living planet, or if it happens in the outer space of the living planet, the living planet will basically be devastated.

Powerful energy weapons are very powerful, in addition to nuclear weapons, space-based weapons, etc., any weapon is enough to cause huge damage to the living planet.

Especially when the enemy deliberately targets the living planet, the living planet is even more vulnerable, and once attacked, everything on the living planet may be destroyed.

Faced with such a situation, the scientists of Xinghan are also thinking hard about how to protect the living planet.

Because Xinghan has mastered the warp engine technology himself, this space battleship with warp speed engine is elusive, even if you have a huge army, it is difficult to defend every place you are, and defend every living planet.

In the future, Xinghan will definitely encounter a more powerful opponent, a powerful civilization that has also mastered the warp speed engine technology, and in the face of such a civilization, the first thing to think about is how to protect their own safety and protect the safety of the living planet.

The emergence of energy shield technology also inspired Xinghan scientists, and on this basis, after decades of research, scientists have also developed this energy defense system to protect the safety of the living planet.

In the outer space of the earth, the spaceship that Qin Yi was riding flew out from above the earth and soon began to fly around the earth.

Inside the spaceship, Qin Yi looked at the outer space of the earth, the current outer space of the earth is very empty and clean, only a very small number of space buildings are still preserved, and the other space factories, space cities, etc. have all been demolished.

Even the Earth's satellite Moon, which is protected, no longer exploits any resources on the Moon.

In the empty outer space, around the entire earth, there are very evenly distributed base stations of the energy defense system, which are not too large, and each base station is the size of a small spaceship.

Each base station is an energy source, and it is also a connection point, surrounding the entire earth, a total of 360 base stations, all of which have been arranged at this time.

"It's about to start~"

Qin Yi's mind was connected to the virtual world, he grasped the movements here at any time, looked at the beautiful planet in the sky outside, and said to Wen Xueying with a smile.

Hearing Qin Yi's words, Wen Xueying looked at the outer space of the earth, saw a beautiful planet, and saw a base station in space not far away.

I didn't wait too long, but I saw that from a base station in outer space of the earth, several rays of energy shot out from these base stations, and soon connected with the adjacent base station rays.

In just a blink of an eye, in the outer space of the earth, at a speed visible to the naked eye, with these base stations as the center, the energy rays formed a huge net, and the earth was netted in it.

This is just the beginning, soon, based on these rays, the majestic energy began to stir up continuously, gradually, with points into lines, lines into planes, a thin, silky light curtain began to appear in the earth's outer space, and in the earth's outer space began to spread, gradually covering the entire earth.

From a distance, the whole earth seems to be a blue planet wrapped in a huge bubble, the bubble that wraps the earth is very thin, very silky, and there are faint streamers constantly flashing from it.

"It's not bad, although the defense level of this energy defense system is not very high because the living planet is too big, but if you want to break this layer of defense, it is impossible to have a level 4 energy attack, and if this energy defense technology is improved in the future, it can also defend against more powerful attacks."

Qin Yi looked at the scene in front of him and showed a satisfied smile.

In the future, you can sleep more steadily, the defense problem of this living planet has always been a long-standing problem, especially with the development of science and technology, with the development of Xinghan civilization, the opponents encountered in the future are becoming more and more powerful.

This living planet must not rely on traditional defense technology, it must keep up with the development of the times and have a more powerful defense system, so that there is no need to worry about being attacked.

"Huh~"

As if to verify Qin Yi's thoughts, in the void, from above a spaceship, an energy attack fell straight onto the light curtain in outer space of the earth.

This powerful energy attack was like a large stone falling into the lake, and it immediately stirred up a thousand waves, causing ripples in the light curtain of the earth's outer space.

But soon, the ripples slowly disappeared, and everything returned to normal, as if nothing had happened, and the energy defense system was perfectly able to withstand this energy attack.

The test of the energy defense system was very successful.

Soon, this layer of light curtain began to slowly retract, and then the connecting light between the base points and lines also quickly disappeared, this energy defense system is very energy-intensive, it is impossible to open around the clock, and it will only be turned on when necessary.