After Xiang Yu was idle at home for a few days, he cheered up again and inspected all parts of the six departments, and found that everyone was in good order.

What makes Xiang Yu most pleased is that in the "Science and Technology Museum", no, it should be the efforts of everyone in the Ministry of Industry, and the papermaking technology that should have appeared after a hundred years has really been invented and has begun to be manufactured in batches! Moreover, Xiang Yu went to check in person and found that the Ministry of Industry had been able to make rice paper!

This invention also surprised Xiang Yu, after all, although Cai Lun was there, Cai Lun's improved papermaking skills were not so powerful, which also made Xiang Yu admire the IQ and hands-on ability of the Ministry of Engineering!

Moreover, during this year, the Ministry of Industry not only developed papermaking, but even improved the method of brewing and movable type printing! With these two technologies, it is already surprising, but what makes Xiang Yu most pleased is that Xu Guangqi doesn't know if he is affected by the butterfly effect in history, and he has actually started to write the "Complete Book of Agricultural Administration". You know, in this day and age, everything is supported by agriculture! In this day and age, the most important thing is not money, but food!

It is a pity that the crops in this era are the most simple, and the most important thing is that the production methods of agriculture are extremely backward! Although iron plough ox farming has appeared, iron plough ox farming has appeared for so long, but it has still not been fully promoted, and the people are still cultivating by manpower! Why? Poor! Not to mention the chaos now, even in times of peace, how many families of the people can have their own cattle?

The labor force is low, and coupled with the single crop in this era, these two mountains are enough to overwhelm ordinary people! However, there are more than just these two mountains in agriculture! There are also taxes, weather and waiting factors! Putting aside these calculations, it is already the greatest ability for the people not to starve to death! So, in this day and age, ordinary people are the biggest gamblers! What to bet on? Bet on the weather, the harvest, the taxes......

But as long as there is technology, then many problems can be solved! But as far as Xiang Yu knows, in this era, there are only four books about agriculture recorded in history, and there are only four in "Lü's Spring and Autumn"! The first agricultural book in history is the "Book of Fansheng" of the Western Han Dynasty, according to this time, it is at least nearly a hundred years before this book was born!

But if Xu Guangqi can successfully compile the "Complete Book of Agricultural Administration" and popularize it, then the amount of agricultural production will be very different! I dare not say that it can be many years older than now, but the harvest of the people must be doubled compared to now!

Xiang Yu thought of this, even if he dreamed, he could wake up with a smile, a double, when the time comes, Jiangdong will not be the richest place in the world? As long as there is food, whatever Chang'an and Wuguan you are, they can all be taken for you! What is it that fights for it? It's not the numbers, it's not the troops, it's the strength of the country!

From the Warring States Period, it can be seen from the battle between Qin and Zhao that the two countries are fighting for national strength, and they are betting on the national strength! However, Zhao Guo was slightly inferior in the end and lost to Qin. In fact, do you think Qin Guo won easily? In fact, otherwise, the Qin State also suffered a great loss of vitality to take the Zhao State! In the first battle of Changping, the losses of the Qin State were no less than those of the Zhao State!

Don't look at the 400,000 troops of Zhao State to let Bai Qi kill them, but after the Battle of Handan, Zhao State almost spit out all the benefits obtained by Qin State in the Battle of Changping, Qin State obviously despised Zhao State in the Battle of Handan, and only sent Wang Ling to lead 200,000 troops to attack at first, but it could not be defeated, and the losses were heavy, and then Qin State increased its troops by 100,000, but it was still not lower, and King Zhao changed his order to Wang Ji to replace Wang Ling as the main general, and then increased his troops by 100,000 to continue to besiege Handan. More than half of the Qin army was killed and wounded and still could not capture Handan, from which it can be seen that the battle of Handan of the Qin State sent a total of 400,000 troops, and here were more than half of the casualties, and then Fan Sui recommended Zheng Anping as a general, leading the army of 50,000 to carry a large amount of grain and grass to support Wang Di, and estimated that when Zheng Anping's 50,000 army arrived at Handan City, the Qin army suffered more than half of the 400,000 casualties, but at least there were still 200,000 troops, plus Zheng Anping's 50,000, the Qin army should have about 250,000 troops at this time, then there is a problem, Since it was also a battle to destroy Zhao, why didn't the Qin State press the army to attack at the beginning, and had to come up with a refueling tactic? The reason is simple: there are no troops in the Qin State that can be mobilized. Due to the heavy losses in the Battle of Changping, 450,000 troops at this time was already the upper limit of the Qin State, otherwise the Qin army would definitely not use the tactics of adding oil. In the Battle of Handan, although Wang Yu later led the remnants to break through under the siege of the multinational coalition army, the Qin army still suffered heavy losses, and the losses in the early stage plus the later elimination by the multinational coalition army were as high as at least 300,000 people. It can also be seen from this that although Zhao Yu lost nearly 500,000 elites in the Battle of Changping, the losses in the two places in the Battle of Changping and the Battle of Handan in Qin Yu added up to almost 600,000.

If the number of people is equal, Qin and Zhao are both half a catty and eight taels, but why can Qin win? Powerful generals? It is undeniable that Bai Qi, Wang Jian and others are all top generals in history. But Zhao State also has generals such as Li Mu, Lian Po, and Zhao Hao, and the general lineup may not be inferior to Qin State!

Qin was able to win, and it was also based on the strength accumulated over several generations. However, among these strengths, Qin's greatest advantage is in food! There is no need to mention the Shang Dynasty change, let's talk about the geographical location and water conservancy projects of the Qin State!

To the east of the Qin State is Tongguan and Hangu Pass, and to the south is Dashan. It happened to be located on the Hanzhong Plain, and agriculture was also a relatively developed country during the Warring States period. In this way, when there is a war in the Qin State, it does not have to worry that someone will come in, because he has two passes that can make the troops of other countries dare not enter, in fact, the troops of the six countries have not been able to enter the border of the Qin State. It is all because of this terrain that its domestic economic development has been uninterrupted, and there is no need to have the problem of attacking the armies of other countries when working like other countries. In this way, Qin was economically ahead of the six countries.

Then there is the water conservancy project, in the Warring States Period, its most famous water conservancy project has two, one is the "actor" South Korea sent people to lobby, let it build the Zhengguo Canal, so that the other is the famous Dujiangyan!

With two water conservancy projects, it can be said that the Qin State has changed the country's agricultural production conditions! Not to mention the reduction of floods, the amount of agricultural production has increased rapidly! The power of several generations, how can heaven be right if you don't win?!

Therefore, the foundation of the world is in the people, and the foundation of the people lies in food! In any era, there can be a shortage of merchants and officials, but the people and food are absolutely indispensable! Because this is the root of the country, without these two things, no matter how strong you are, it will only be like a meteor crossing the sky. It's just a flash in the pan!

This is also the reason why Xiang Yu suppressed the rich and used various methods to force the family to spit out private land and transfer it to farmers for cultivation! This is also Xiang Yu's way of governing the country.