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

The sun never rises in the east, and here it is eternal night, with only a starry sky that glows dimly overhead.

In order to adapt to the low-light environment, everyone's eyes are a little bigger than in the real world, especially girls, just like the characters in the anime world, with big and beautiful eyes. The main reason is that the larger the pupil, the more sensitive it is to light.

"In the age of steam, there is no daylight, a strange world ......" Zhang Yuan exhaled a breath of turbid air in his chest.

He has been living quietly here for 18 years, and at first, like the previous world, there were certain autistic tendencies. However, with the awakening of self-awareness, the symptoms have completely improved.

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

The starry sky here is completely different from that on Earth, and "North Star" is nothing more than a similar term in astronomy, commonly used for navigation.

There are still no abilities or magic in this world, and his so-called "golden finger" is a very good aristocratic background, a strong body, and some mechanical design drawings about the steam age.

Well, in addition to having a good background, this kind of "golden finger" is really better than nothing. Zhang Yuan even felt that the various knowledge in his mind was much more effective than any mechanical drawings.

He turned his head and looked at the crescent moon directly above, and the shadow of the moon was actually due to the fact that the earth itself had obscured the sun's light.

"In other words, this planet is still a sphere, so the outline of the moon that is obscured is in the shape of an arc."

Due to the lack of sunlight, the number of people who can be supported by this land is not very large, and as far as the information currently known, the entire continent of the world combined is only 100 million people.

The vast majority of people do not live well.

On the table was a small globe, made by Zhang Yuan according to local navigational images, half dark and half bright. Due to the harsh environment of the planet itself, only about one-tenth of the area has been explored by humans.

"There is no day in this place, only night, so there is only one possibility...... The planet is tidally locked by the central star, so the rising side is always daytime and the other side is always night. We humans live at night. ”

Tide locking is a very common phenomenon in astronomy. For example, the Moon is always facing the same side towards the Earth. The time it takes for a tidally locked object to make one revolution around its own axis is equivalent to the orbital period.

So, this planet actually has light, and at least half of the area has light.

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 illuminated side is extremely hot, and human beings cannot survive in the light zone against the high temperature, so they can only live on the dark side where the temperature is quite suitable......

"What a miserable world!"

However, according to the logical perspective of physical rules, there must be no shortage of such tragic civilizations in the universe...... Even if it's just a virtual world at the moment.

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

For him, it was already a habitual thinking.

"Lord Count, you should prepare for the ball hosted by the Duke of Warta...... The time has come. The elderly old deacon interrupted Zhang Yuan's train of thought and made a unique aristocratic etiquette.

"Okay, thanks for the reminder." Zhang Yuan nodded, and under the service of the servants, put on his dress and leather shoes, and then quickly boarded a steam locomotive.

In this world, because of the good reincarnation, he is already a "count". His cheap dad died of a shipwreck a year ago, and then the queen awarded Zhang Yuan the hereditary title...... This should be regarded as part of the "golden finger", which allows him to live a very rich life without hard work.

The engine "suddenly" emitted smoke, and the steam locomotive started, but it was not as trembling as imagined, indicating that the steam car here has been improved for many generations.

This is Boulder City, the city in the easternmost part of the mainland, with a perennial temperature of about 24-26 degrees Celsius, which is very suitable for human habitation - the only drawback, there is no sunlight.

The warm ocean currents from the western sunband, which bring a constant supply of fish and algae, are also a source of food for the city's residents.

From Boulder, the farther west you go, the closer you get to the light, the hotter the weather becomes.

Five hundred kilometers to the west is the intersection of light and darkness – the planet's twilight zone. In the twilight zone, the temperature has reached 40 degrees Celsius, and humans can barely survive in this area, but it is quite uncomfortable. However, there are many animals and plants that can live very happily.

No matter how unsuitable for survival is in the twilight zone, with sunlight, all kinds of plants can grow naturally, so in the west of the continent, it has become a very important plant production base.

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

Conversely, the farther east you go from Boulder, the colder it gets.

The planet has few continents, and to the east is an endless ocean with a perennial temperature of around minus 20 degrees. The coldest places can reach minus 100 degrees Celsius, forming a thick layer of ice, which is the so-called forbidden area for humans.

"Whew-"

Humanity is too tough.

Zhang Yuan exhaled softly, rubbed his hands, and shrugged his nose again, and he could smell the unique smell of coal burning.

Coal, the most precious substance in the lightless world, means energy, and light.

Without coal, there would be no industrial revolution, and without the industrial revolution, human life would be even more miserable. At least now, there are 100 million people living on the continent and the islands, and it is said that in ancient times, only a few million people could live on the entire continent.

Steam locomotives moved slowly on the road, which was paved with slag from burning coal mixed with asphalt, giving off a faint smell of sulfide.

The streets were full of people, and the gas lamps on the side of the road were shining dimly. Many people can't afford gas lamps at home, the light source on the street is the only light source for them, and some children are doing their homework on the side of the road.

Every household has put some bean sprouts-like plants in front of the door, and this kind of negativity plant can grow with a little gas lamp. For ordinary people, vegetables are precious, and the light source is provided by the government anyway, so why not?

"Rum from the Gar Islands! And the freshest 'Antimas' ingredients, everything you need! ”

"The freshly caught Portuguese grass is fresh!"

There are many vendors shouting and doing business in the streets, and this downtown area is full of food, alcohol, jewelry, and spices from different islands, forming a false and prosperous picture.