Last autumn, the state of Chu fell, and last winter, the state of Qi surrendered. In the spring of this year, the world was unified, and Yingzheng was honored as the first emperor, and the historian recorded this year as the first year of the first emperor!

In the summer of the first year, Daqin sent 200,000 troops to sweep the grasslands, no matter how big or small the tribes passed, no one was spared, either surrender and become Daqin's own people, or die, there is no third way to go!

The grassland is vast and boundless, at least 10,000 miles from north to south, at least 20,000 miles from east to west, and 200,000 cavalry are sprinkled into such a vast grassland like a grain of sesame seeds sprinkled into a pot of porridge. People with bad eyes can't find out where this sesame seed is.

Without a map and without a guide, even if the combat effectiveness of the 200,000 soldiers is far stronger than that of Donghu, they may be destroyed because they get lost.

But fortunately, Daqin is open, there is enough intelligence information, and there are more than 1,000 Vermilion Birds in the sky, patrolling all day long, and the land where the army is located within a radius of hundreds of miles has been clearly investigated.

Dozens of people may be able to use the terrain to hide, but hundreds of people and above will definitely not be able to escape Suzaku's eyes, and they will eventually be eaten by the army.

In the autumn of the first year, Daqin dispatched 600,000 militiamen to meet the water tower bridge in the entire south, open mountains and build roads, did not rush to attack Baiyue, nor did they immediately run into the southern rainforest, but continued to practice the ability of tower bridges to build roads.

At the same time, a large number of spies, worshippers, and equipment equipped by the imperial court went to the southern rainforest, and each of them learned the art of cartography, and when they returned, Great Qin would have a large number of more detailed maps.

In the winter of the first year, 200,000 soldiers returned, and there were no tribes of more than 1,000 people on the grassland, more than 1 million prisoners of war, countless years of accumulation on the grassland, more than ninety percent of the population, and more than ninety percent of the cattle and sheep were captured by Daqin.

The grassland of Nuoda was empty for a while, and the total population of such a large area of 10,000 miles from north to south and 20,000 miles from east to west was only 300,000 or 400,000, and more than ninety percent of them were herdsmen from Daqin, who had already returned to Daqin and were specifically responsible for grazing in the prescribed grasslands.

In the spring of the second year of the first emperor, 600,000 militia were finally dispatched.

In this spring-like era, Ying Zheng finally set off, he took 30,000 troops, began the national parade, he wanted to personally see his own country, see his own world, look at his own people.

In the summer, he came to the prairie.

Basking in the sun, Ying Zheng didn't care about the image, and squatted directly on the ground and started playing with mud.

He carefully plucked a piece of grass, which was still green underneath and full of life, but the top was a little withered.

I opened my mouth and chewed twice, it was a little sweet, but it was very light, the sweetness was not obvious, and it was a little bitter, compared with the wild grass in the Central Plains, the wild grass on the grassland was obviously unpalatable.

After breaking the mud and kneading it, Ying Zheng looked at Li Si on the side: "How is it?"

"Elder Ceres took people to personally inspect it, and he said that the grassland land is not suitable for farming, there is too little water here, and the water content is insufficient. If the land is forcibly cultivated, it will be abandoned for a maximum of two years, and the land will begin to desertify, and eventually turn into a desert. ”

He speculated that the great deserts in the grassland may be the result of uncontrolled farming, and the ancestors of the grassland must have tried farming, and those deserts were the result of attempts. ”

The plains can be planted every year under the condition of fertilization, and if it is not possible, they can be fallowed, or soybeans can be planted for a season to alleviate the phenomenon of land depletion.

But the grassland is not good, once the water content here is reduced to a certain level, it will directly become a desert, and it is extremely difficult to change it back!

This is the difference between farming and nomadism, and the key is the amount of rainfall.

Why has the grassland harassed the Central Plains for 2,000 years in history and has not been completely wiped out? It is not that the Central Plains is benevolent, but that the grassland cannot be cultivated!

When the rainfall is sufficient and the grasslands turn into plains, the nomads will naturally become able to sing and dance!

When the Gatling Bodhisattva and the Nuclear Buddha were born, the steppe peoples would put down their knives and become able to sing and dance, and be hospitable!

But what do I want them to be hospitable? I want the grassland to be able to farm!

"You really can't farm?" Ying Zheng said lightly.

"No, Elder Ceres said that unless it rains rains for decades in a row, large-scale changes to the environment of the grassland, and turns the grassland into a plain, you can't farm!" Li Si said with his head down.

Today's Yingzheng, even if he is very kind to these high-level officials on weekdays, but the power on his body is getting heavier and heavier day by day, and many times Li Si has the illusion of being overwhelmed.

"Well, it's not impossible. Ying Zheng said seriously.

Suddenly, he beckoned, used the authority of the Lord of the World, and used the Heaven and Earth Yuan Qi in the sky, which evolved into a heavy rain.

It was a sunny day, and it suddenly began to rain. The sun is still hanging high in the sky, but the rain shows no signs of stopping.

Ying Zheng had no intention of returning to the tent, and after a quarter of an hour, the rain stopped. This is the end of the first experiment, and the consumption is average.

Raising his right foot, he gently stepped on the earth under his feet, and a large amount of heaven and earth vitality gathered, and the original grassland directly turned into a plain.

Silently noted down the aura consumption, and Ying Zheng began the third experiment.

In the high altitude of the Northland, a strong wind suddenly blew, and under the action of the strong wind, white clouds and a large amount of water vapor set off from the Northland and came towards the grassland.

The wind blew for a day, and a day later a large amount of water vapor from the Northland accumulated into clouds, which evolved into rain falling from the sky.

The next day, looking at the heavy rain outside the tent, Ying Zheng blinked his eyes and began to do mental calculations.

The first method, using the Heaven and Earth Yuan Qi to evolve the rain, is not very difficult in terms of his current authority, and the world is almost none, and the disadvantage is that it consumes the Heaven and Earth Yuan Qi, and the effect is relatively late.

It can take years, if not decades, to transform grasslands into plains. The consumption of each rainfall may not be large, but it is certainly not a small amount accumulated over decades.

The second method is to directly use the Heaven and Earth Yuan Qi to change the nature of the land and turn the grassland into a plain on a large scale, this spell is also very simple, but the amount of Heaven and Earth Spiritual Qi consumed is the most, much more than the first one.

But the advantage is also obvious, that is, fast, very fast, as long as Yingzheng is willing, the vitality of heaven and earth can also be supplied, and even overnight, all the grasslands of Nuoda will be turned into plains.

Thinking of this, Ying Zheng shook his head, there is no need!

The south has not yet been developed, and when the development of the south is completed, when the population continues to increase, and even the south can accommodate a lot of people, it will be at least 40 years, or even 60 or 80 years later.

As for the third method, the consumption is minimal. If it is said that the cost of directly changing the terrain on a large scale and turning the grassland into a plain is 10, then the cost of slowly improving the grassland terrain over a period of several decades by turning the vitality into rain is 10.

And the evolutionary wind blows all the water vapor from the northland with only one consumption. But this will obviously affect the Northland itself, will it cause a drought? Will it blow the water vapor from the south to the Northland?

Then in this way, the rainforest climate in the south will naturally be alleviated, there will be less water vapour, there will be less rainfall, and the climate will definitely change.

"Pass the order, let Mr. Han Feizi organize people to deduce the meteorological changes between heaven and earth, especially the problem of rain, and transfer the water vapor from the south to the north on a large scale, and then transfer the water vapor from the north to the grassland, what impact will it have on the world? What are the good aspects? What are the bad aspects?"

"This project is of a high level, and those who participate in this project can read the geographical content of the material world for free, and can read the advanced mathematics and analytic geometry of the material world for free...... In short, whatever books you need, you can supply them for free, and you must calculate them clearly!"

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