In this world, the sky is dark, and a few dark crows are croaking in the sky.

The sun will never rise in the East. It is an eternal night. There is only a starry sky, which emits a dim light overhead.

In order to adapt to the low light environment, everyone's eyes are bigger than the real world, especially girls. Like characters in the animation world, their eyes are big and beautiful. The main reason is that the larger the pupil, the more sensitive it is to the perception of light.

"Steam age, no day, a strange world..." Zhang Yuan spit out a mouthful of turbid air in his chest.

He has lived here quietly for 18 years. At the beginning, like the previous world, he had a certain tendency of autism. However, this disease has completely improved with the awakening of self-consciousness.

Looking up at the starry sky in the distance, he easily recognized the so-called "Polaris".

The starry sky here is completely different from that on earth. "Polaris" is just a similar term in astronomy and is widely used in navigation.

There are still no powers and magic in the world. His so-called "golden finger" is a very good noble origin, a strong body, and some mechanical design drawings about the steam age.

Well, apart from a good background, this "golden finger" is really better than nothing. Zhang Yuan even felt that all kinds of knowledge in his mind was much more effective than mechanical drawings.

He turned his head and looked at the curved moon directly above. The shadow of the moon was actually obscured by the earth itself.

"In other words, this planet is still a round ball, so the outline of the moon is covered in an arc shape."

Due to the lack of sunshine, the number of people that this land can support is not large. According to the currently known information, the total population of several continents in the world is only 100 million.

Most people don't live well.

On the table stood a small globe made by Zhang Yuan according to the local nautical images, half dark and half bright. Due to the harsh environment of the planet itself, there are only about one tenth of the areas that human beings have explored.

"This place has no day, only night, so there is only one possibility... This planet has been locked by the tide of the central star, so the sunrise side is always day and the other side is always night. We humans live at night. "

Tidal locking is a very common phenomenon in astronomy. For example, the moon always faces the earth on the same side. The time for a tidal locked celestial body to rotate around its own axis is equal to the revolution period.

So, this planet is actually illuminated, and at least half of its area is illuminated.

So why don't humans live in the light belt of the planet?

The reason is that the planet is too close to the central star, and the side illuminated appears extremely hot. Human beings can't survive under the high temperature in the light belt, and can only live on the dark side with an appropriate temperature

"What a miserable world!"

However, from the logical point of view of physical rules, there must be no lack of such a tragic civilization in the universe... Even if it is only a virtual world at present.

Zhang Yuan is thinking about what his arrival can change this civilization

For him, it has been a habitual thinking.

"Your Excellency, you should prepare for the ball held by Duke Valta... The time has come." The old deacon interrupted Zhang Yuan's thinking and made a unique aristocratic etiquette.

"OK, thank you for your reminder." Zhang Yuan nodded. With the servant's service, he put on his dress and shoes, and then quickly boarded a steam locomotive.

In this world, because of his good reincarnation, he has the status of "count". His cheap father died in a shipwreck a year ago, and then the queen granted the hereditary title to Zhang Yuan... This should be regarded as a part of the "golden finger", so that he can live a very rich life without effort.

The engine burst out smoke, and the steam locomotive started, but it didn't tremble as expected, indicating that the steam car here has been improved for many generations.

This is Jushi City, the most eastern city on the mainland. The annual temperature is about 24-26 degrees Celsius. It is very suitable for human habitation - the only disadvantage is that there is no sunshine.

The warm ocean current from the Western light zone brings a steady stream of fish and algae. It is also a source of food for urban residents.

Starting from Boulder City, the farther to the west, the closer to the light, and the hotter the weather.

Five hundred kilometers to the west is the junction of light and darkness - the twilight zone of the planet. In the twilight zone, the temperature has been as high as 40 degrees Celsius. Human beings settle in this area and can barely survive, but it is quite uncomfortable. But many animals and plants can live a very happy life.

The twilight zone is not suitable for survival. With sunshine, it can naturally grow all kinds of plants. Therefore, it has become a very important plant production base in the west of the mainland.

Some less affluent people, as well as all kinds of slaves, endured the high temperature and farmed in the twilight zone for a living. Zhang Yuan's family also has a small piece of territory in that area. Of course, he just knew about it and didn't see it himself.

On the contrary, starting from Boulder City, the more to the East, the colder the weather will be.

The continent of this planet is rare, and there is an endless ocean in the East. The perennial temperature is about minus 20 degrees. The coldest place can reach minus 100 degrees Celsius, forming a thick ice layer, which is the so-called human forbidden zone.

"Call -"

Human beings are too difficult.

Zhang Yuan gently exhaled, rubbed his hands and shrugged his nose. He could smell the unique smell of coal combustion from a distance.

Coal, the most precious material in the dark world, means energy and light.

Without coal, there would be no industrial revolution. Without industrial revolution, human life would be more miserable. At least now, there are 100 million people living on the mainland and islands. It is said that in ancient times, only millions of people could live on the whole continent.

The steam locomotive runs slowly on the road. The road surface is paved with coal burning waste mixed with asphalt, emitting a faint smell of sulfide.

People came and went in the street, and the roadside gas lamps were blooming with dim light. Many people can't afford gas lights. The light source on the street is the only light source for them. Some children are doing their homework on the roadside.

Every family has put some plants like bean sprouts in front of their doors. This kind of negative plant can grow as long as it is lit by a gas lamp. For ordinary people, vegetables are precious. Anyway, the light source is provided by the government. Why not?

"Rum from the gar islands! And the freshest 'antima' ingredients, everything! "

"The Portuguese grass just caught is fresh!"

There are many vendors shouting to do business in the street. In this downtown area, there are all kinds of food, wine, jewelry and spices from different islands, forming a false and prosperous picture.