Passengers looked around through the hood of the flying car, and in the vast world, all kinds of flying cars flew up and down in front of and behind their flying cars, looking like a flock of nocturnal birds with scattered eyes and shining, and occasionally a flying car whizzed by from behind at close range.

"Mu Lu, why is your flying car able to fly automatically in the night sky without getting lost?" Kabayashi asked curiously.

"Because the flying cars are equipped with satellite navigation systems, you see, this is an electronic map." Mu Lu clicked on the dashboard with his finger, and a bright and clear three-dimensional image immediately appeared on the windshield at the front of the cabin, which not only the two girls in the front row could see it clearly, but even the boys sitting in the back row could easily see it.

"Just enter the destination you want to reach on the map, and the satellite navigation system will automatically lock on to the target for the flying car." Mu Lu said.

"But if there are many speeding cars going to the same destination at the same time, isn't it easy to collide?" Amma asked.

"There will be no collision because the satellite navigation system assigns a separate orbit to each aircraft. Moreover, the flying car is equipped with enough sensors, which can continuously measure the distance, size, speed and other flight parameters of the surrounding obstacles, and transmit the data to the satellite navigation system in time, so as to adjust the flight track and flight speed of the flying car in time to avoid collision accidents in the air. Mu Lu said lightly.

For the five newcomers, it was the first incredible thing they discovered when they arrived in the developed world. Although Wang Fan had heard of satellite navigation before, he felt too far away from him and never paid attention to it. Sitting in a flying car today and listening to such words makes me feel like I am there.

Wang Fan raised his neck and asked: "Mu Lu, in Russ Star, there must be countless flying cars or spaceships flying in the air at all times, how can the satellite navigation system control so many flying cars at the same time?" ”

Mu Lu said in a flat tone: "This kind of navigation technology has long been mature in Russ Star, and it is not a new technology. There has been little significant progress in Russtar's technology in the last hundred years. ”

Kapok Zi looked at the starry flying machines in the night sky and said: "Mu Lu, although the science and technology of Russ Star are so advanced that we can't imagine it, but I think as long as it is a machine, there will always be a time when it breaks down, in case the satellite navigation you said suddenly breaks down or is deliberately destroyed by bad people, won't so many flying cars in the sky collide with each other?" ”

"In the event of a sudden failure of the satellite navigation system, the driver can switch to manual operation. However, in that case, air traffic will definitely fall into chaos, and collisions with each other will inevitably occur.

But don't forget, the modern civilization of Russ has lasted for three hundred years, unless the Russ space is suddenly attacked by a powerful force from outside, under normal circumstances, the probability of an accident in the satellite navigation system is very low.

Even if some of the navigation satellites suddenly fail, there are enough navigation satellites in the orbit of the Ras satellite to keep the world's air traffic running. ”

Kabayashi's tone was a little excited, "Mu Lu, what you just said just now is that even without a satellite navigation system, the flying car can be manually piloted to fly in the air?" ”

Mu Lu smiled: "Yes, Shanglin, I deduce that you are thinking about bringing a flying car home next time you go back to Weina Star." However, I would like to remind you that without a satellite navigation system, flying cars can fly, but they are prone to collisions or find their destination. ”

As everyone spoke, a large scene of brilliant lights appeared in the sky ahead.

After a while, the wood-green flying car slowly flew into the sea of lights, and the stars in the sky disappeared without a trace. High-rise buildings covered in colorful lights rise and fall one after another in the sea of lights, and those flying cars shuttling in the sea of lights are like groups of fireflies flying in the fire trees and silver flowers.

The woody green flying car slowly flew through the night sky of the city, and all five of his passengers were shocked by the sight before them.

"So many lights!" Zhen'er, who had been silent all the way, suddenly exclaimed.

"It's not the lights, it's the electric lights!" Wang Fan corrected.

Shanglin said in an authoritative tone: "The night scene of Jibang City described by my grandfather Har in the book is exactly like this! However, my grandfather said in the book that for him, the night scene of Jibang City is still not as good as the brilliant starry sky over Princess City. ”

Kapok Zi said: "Hey, Mu Lu, it costs a lot of money to light so many lights every night, right?" ”

Mu Lu turned his head and smiled at Kapok Zi in the back row: "Kapok, I observed that you are very interested in money. However, it is difficult to assess the amount of money without setting a benchmark. If the resources and wealth possessed by the city of Polar State are used as a benchmark, the cost of these lights is very small.

Because the world of Russ Star had controlled nuclear fusion technology as early as 300 years ago, the energy supply is sufficient. In addition, the energy of the star, which you call the sun, is also well utilized, so the energy is not only abundant but also cheap.

The Rassians love to gather in the city at night to eat, drink, and be merry, and their nervous system is excited when they see the colored lights of the night, but when the sun rises, they are drowsy. It is precisely because the life of biological man is reversed day and night and violates the laws of nature that various physiological diseases will arise and death will occur at any time. Therefore, although theoretically, the natural lifespan of Ras biological humans can reach 200 years, the vast majority of biological humans can only live to be more than 100 years old. Mu Lu said.

Ama was shocked: "Mu Lu, you mean that living in this kind of light will lead to death?" But it's a beautiful sight! ”

Mu Lu smiled: "Ama, you only understand a small part of what I just said, what I want to express is that if the Ras biological people work during the day and rest at night, according to the current medical technology, the average life expectancy of the Russ can reach two hundred years instead of the current average one hundred and twenty years old." ”

Zhen'er said, "Mu Lu, I think you're right, although this kind of colored light is beautiful, but I won't be able to sleep well if I live here." If you don't sleep well, you won't have energy, and if you don't have energy, you'll get sick easily. ”

"Hey, me too, I can't sleep during the day unless I drink a lot of alcohol in the Wine Fairy City." Kapok said.

The advice of Mu Lu has dramatically reduced the excitement of tourists who see the night view of Polar Bang City, and although the nightlife may seem desirable, it is not so good if it is a matter of physical health.

Kamibayashi said: "I now fully understand why my grandfather Hal said that the night view of Jibang City is not as good as the brilliant starry sky, because biological people are healthier to live under the stars. ”

Mu Lu said in a sad tone, "Hal has loved to watch the stars in the garden since he was a child, and even when he grows up, he rarely comes to Polar City at night to have fun, and I hope that the five of you can follow Hal as an example." ”

Mu Lu's words immediately worked, and Shang Lin said: "Mu Lu, we have seen enough of the night view of Jibang City, please let us see the night view of Star Entertainment City again, and then we will go home." ”

"Star City is not in the commercial center of Jibang City, but in a place with geothermal hot springs near the mountains and the sea, which is still far from here. And Mr. Mul said that you can't go to Starry Sky City, so I can't take you there to see the night view, and when Mr. Mul allows you to see the night view of Starry Sky City, I will take you to see it! ”

Mu Lu said as he turned around and flew back home.

After returning home, the five of them went upstairs to say goodnight to Mu Lu, but they did not fall asleep immediately, but gathered in Shanglin's room and talked.

Only then did Wang Fan learn that although it had been nearly five months since he returned to the Earth World, it had only been more than a month since Zhen'er followed the three Vena Star companions to the prairie.

Accompanied by Kabayashi, Kapok, and Ama, Jane visits all the princess shrines in the prairie, and worships her great-grandmother at each temple. At the same time, they traveled to many scenic spots in the prairie together, and from then on, Jane was determined to work with her three companions to spare no effort to defend the savannah and the entire Weiner Star land against the invasion of the land by the seamen.