On the second day of February in the first year of Hongwu, the day when the dragon raised its head in the previous life, no one in the Qi country went to eat pig's head meat or get a haircut, a comet pierced the sky, and the human community who witnessed this spectacular scene thought that the gods had sent down their anger, and the meaning was unknown.

The tribe that believed in ghosts and gods hurriedly began bloody sacrifices, hoping to prevent disasters from befalling them through blood and sacrifices.

However, in Qicheng, under the tough attitude of the government, the civilians who wanted to make some big moves could only look at the starry night sky in fear.

Qi didn't make any sacrifices, but this comet gave Yang Hao inspiration, so he pretended to be a prophet, named the comet Hongwu Comet, and boldly predicted that the comet would break through the sky again after seventy-six years.

And for the first time in this world, the movement between celestial bodies was explained with scientific thought.

The intellectuals of Qi State, under the indoctrination of Yang Hao, already knew that this world was a round ball, but there was no clear answer to why this ball was floating in the void.

With a superficial foundation in astronomy, Yang Hao took the opportunity of the comet's arrival to refine his known cosmology again.

Yang Hao compiled it into a textbook of nearly 1,000 words, roughly explaining the relationship between the sun, the earth, the moon and some planets visible to the naked eye.

There was no church at the stake in this era, and when Yang Hao's theory of the universe was proposed, no one shouted that this was deviant and blasphemous.

Even if there were such radicals, Yang Hao felt that when he was angry, he would physically eliminate them.

The new cosmology opened the eyes of the intellectuals of Qi State, and some people who were full of illusions would look at the starry sky from time to time after this, fantasizing about the vastness of the universe.

In the first year of Hongwu, the demon star came into the world, and this strange astronomical phenomenon was recorded by the historians of Qi State, and Yang Hao's prophecy was also written into the book.

A few years later, when later generations saw the dazzling comet again, Yang Hao, the king of Qi, had the title of astronomer on his head.

Just like human beings in previous lives, an accomplished ancient man is often endowed with a lot of mythological colors, and the incomparably mysterious Yang Hao will always make future generations full of mythical reverie.

Ancient Xuanyuan had all kinds of auras in one, and thousands of years later, this aura was buckled on Yang Hao's head.

If Emperor Xuanyuan hung down his clothes and ruled the world to become the ancestor of Chinese humanities, then Yang Hao, who brought human society from the early slave society to the era of centralized power, is a beacon on the road of human civilization and guides the direction of human progress.

In the first year of Hongwu, February 13, in the early morning after the heavy snowfall, the citizens of Chang'an City were actively sweeping the snow in front of their homes and on the road.

This is a period that every community resident must do, this is morality and law, although the code of conduct designated by Yang Hao has some meaning that everyone sweeps the snow in front of their own door and does not care about the frost on the tiles of others.

However, the simplicity of the folk customs in ancient times still made Yang Hao feel gratified.

The citizens of Chang'an City don't mind helping their labor-scarce neighbors clean up their share of tasks when they can.

Under the deliberate constraints of the government of Qi, voluntary labor was slowly integrated into the culture of Qi.

And the benefit of this culture is that it makes Chang'an City more like a city inhabited by humans, rather than a pigsty one size larger.

Although Chang'an City in winter is not clean and dusty, there is no disgusting excrement such as feces and urine on the streets, and the snow piled up in front of each house looks like a beautiful oil painting from the distance when standing on Suzaku Street.

The white goose on the street ran out of the fence of the owner's house, and the cold weather made the white goose stand on one leg on the snow, with its orange-yellow beak inserted under its wings, isolated in the cold wind and not cold, and integrated with the white earth.

A child wrapped in tattered animal skin clothes ran out into the street in a panic, picked up the white goose, and returned to his home with the neck of the white goose with the other.

The creaking wheels ran over the stiff frozen ground, Yang Hao lifted the curtains and looked at the ordinary and quiet life of the civilians in Chang'an City with relief.

The carriage, with dozens of heavily armed palace guards, slowly drove out of the north city gate and slowly drove along the sand-paved path to the handicraft area of the Ministry of Industry's workshop.

The craftsmen all knew that Yang Hao was coming today, and they were waiting at the station early, patiently waiting for Yang Hao's arrival.

Behind them, a behemoth several meters tall slowly rotated and creaked.

If the loom is the beginning of the mechanical technology of this era, then this thing called the windmill is the pride of the craftsmen of the Qi country.

This huge thing, with its complex structure, amazes everyone who sees it, but after understanding the principle, it feels that everything is so natural.

Yang Hao saw the slowly rotating windmill from a distance, and couldn't help but sigh at his ingenuity.

If you don't push yourself, you will never know how good you are.

If someone in his previous life had told him that he could design some simple mechanical device by his own ability, he would not have believed it.

But when he came to this era, in order to survive and improve his quality of life, he actually caused things that he couldn't even think of.

The cold weather did not hinder the enthusiasm of the officials of the Ministry of Industry, and when Yang Hao arrived, they came forward to greet him as a courtier.

Accompanied by officials, Yang Hao visited the masterpiece he had designed.

The huge four blades on the windmill rotate slowly in the cold wind, and if you have tulips and lavender, you will feel like you are in the Dutch countryside.

The windmill designed by Yang Hao is a reference to the Dutch windmill of later generations, although he knows that Huaxia has its own style of windmill, which may be due to the lack of popularity, but he does not know about it.

However, in this era, not to mention the Netherlands, the human beings in Europe are estimated to still live a life of drinking blood, and the quality of life is even inferior to that of wild beasts, so naturally no one came over to shout about the issue of cultural heritage with Yang Hao.

This windmill was invented by Yang Hao, and naturally it belongs to the Qi State and belongs to the Chinese civilization of this era.

The inside of the windmill is driven by the windmill in the connecting rod structure, which slowly rotates.

The role of the windmill can be used as a waterwheel, but Yang Hao does not plan to use the windmill here, the waterwheel has its own waterwheel, and this thing in front of him, Yang Hao's plan is to use him to grind flour and strike iron.

Although the current Qi State does not have the smelting technology of wheat or iron, Yang Hao is not worried about this, these two things will be available sooner or later.

Now the only role of the windmill is to grind beans, in the actual use, let him improve the transmission technology, for the future development of water conservancy machinery to accumulate experience.