In fact, the previous modification of farming equipment was only an insignificant small step in the overall development of Liu Chan's agriculture.

Maybe it's not even a small step, it's just a random graffiti.

But fertilizer is different!

To give the simplest example, in the Han Dynasty, the yield of grain per mu is about 200 catties in the current unit, which is average, of course, the soil is naturally more fertile in the land of Sichuan and Shu, which is naturally bound to be higher, but it is also extremely limited.

Now Liu Chan can't afford to bring the trend of roasted locusts like the later generations of Chinese people to solve the invasive species crayfish, so he can only think of ways from other directions.

Of course, chemical fertilizer first appeared in his conception, but Liu Chan did not have the technology to come up with this thing before, but with the assistance of the sulfuric acid preparation process brought by Ma Huhei, under the auspices of the contemporary chemist Qingsong Daoren, he did not spend any hard work to make this big killer.

Industry is difficult to start, but once you have a basic foundation, then the road ahead is easy.

Liu Chan estimated that although he could not achieve the feat of 1,080 per mu, the desire of the people to be able to eat a bite of food at any time could still be satisfied.

"Prince, what's next?" When Liu Chan was deep in thought, Qingsong Daoren, who had been waiting, gritted his teeth and pursed his lips for a long time, and finally reminded him, of course, he wanted to say the last sentence more.

"What should I call this thing, in fact, this thing can already be put into mass production, after all, it is not a high-tech thing."

After following Liu Chan for a long time, these personal people and vassals in the prince's mansion have come out of their mouths from time to time some things that are absolutely impossible for others to understand in this era, although many words are not understood by everyone, but it is obvious that it is definitely beneficial to master a few more words that can ask others and deter others on weekdays.

Liu Chan was stunned at this time, named? This is indeed an important job, you can't just call it fertilizer and throw it out, if you don't take a reliable name, the farmers and uncles will not dare to use your thing.

Suddenly, a famous fertilizer brand name appeared in Liu Chan's mind, but this famous name was negative.

Liu Chan suddenly smiled lewdly, opened his mouth and said, "Daoist Qingsong, this king has already thought about it. ”

"It's called...... Kim K-la! ”

……

Going hand in hand with agriculture is the cultural sector.

The power of bamboo paper and movable type printing has now been slightly reflected, and in just over a month, it has attracted no less than ten people who are famous in the study of Wuyang Prince's Mansion, and some guys went directly to Chengdu, and they still can't look down on Liu Chan who is not obvious, but plans to enter the career directly, and become famous through movable type printing and bamboo paper.

It's just that what disappointed them was that although there was a lot of bamboo paper, movable type printing was firmly blocked in Wuyang by Liu Chan.

These ancient intellectuals really couldn't be trapped and couldn't be pressed without using some small means, and it is not a lie that the literati have been judging each other lightly since ancient times. These guys who went to Chengdu went one by one complacently and returned dejectedly. Scholars at these levels are counting on showing their ambitions to everyone in the world through some channels, in order to be famous before and after their deaths, but for Liu Chan, their heavyweights are not enough, there is knowledge, but there is no one who can help him.

This is just an episode.

Now the biggest progress in culture is the establishment of standardized classrooms, when a set of printed versions of the major masterpieces in front of those poor scholars in Wuyang School, everyone has experienced shock, curiosity, moving, and then shock in their hearts.

If you want to be a civil official, you must thoroughly understand the classics, otherwise others can casually quote the classics and make a person who has not read the cherished classics speechless.

Of course, the way of education has also changed, no longer Mr. read a few times above, and the students below shake their heads and read along, but the all-round development of morality, intelligence, physical fitness, art and labor, so that Mr. Teaching, who can accept fresh educational concepts, can be said to be one in a hundred, so at the critical moment of children's growth, Liu Chan had to stand up and guide them one by one.

Reading should start from the baby, and the older scholar already has a stubborn worldview, and only a blank child, Liu Chan, can have the confidence to change and use it as a reserve for his various plans.

……

Liu Chan's cheap father had already broken away from the fluttering immortality after the victory, and ran to Xiliang with an army of more than 100,000 people, and Cao Cao did not show weakness, and led the soldiers to the bottom of the city wall of Jiangling.

In fact, although Guan Yu is arrogant, he still has some thoughts about the civilians in his heart, if he is released to other people, such as the Fazheng around Liu Bei, most of them will come to a strong wall and clear the wilderness, even if it is to burn thousands of miles of fertile land, so that Cao Cao's supply line will be infinitely extended, and the supply line will be long, and there will be many flaws.

As for Dongwu, it can only be said that the Yangtze River has helped Guan Yu a lot, as long as the riverside is guarded, there will be no backyard fire for a while.

Unless Soochow is ruthless enough to pull out all the ships and fight to the death with the Liu group, but this is obviously impossible, Soochow seeks a rebalance of the strength of the three parties, rather than sacrificing himself to fulfill others.

Without the cooperation of Eastern Wu, Cao Cao did not choose to be tough with Guan Yu for the time being, but had the idea of completely encroaching on the territory. As for the issue of Liu Bei's invasion of Xiliang, Cao Cao has ordered people to garrison Chang'an, and Xiliang can let it, but not a single city north of Hanzhong to the east can be allowed, as long as Cao Cao has a firm foothold in Jingzhou, he will immediately return to the north, and Liu Bei will have no chance at that time!

Now Chen Heng's last obstacle in front of Cao Cao is Guan Yu, who sticks to Jiangling and does not come out!

……

"Hey, are those brutes soft? For so many days, why haven't you even seen a single soldier or horse? ”

Zhao Yun stood straight in front of the city wall like a gun, and Xiahou Lan patted his armor a little lazily behind him.

If they were still trembling before, not knowing how to resist this tenfold enemy, then now with this wall known as the immortal trace, every soldier stationed on it has an inexplicable peace of mind.

But Zhao Yun knew that this kind of peace of mind ...... It didn't last long.

"Boom!"

"Boom!"

"Boom!"

At this moment, a thunderous vibration came from weak to strong, from far and near.

"What sound?" A soldier defending the city shouted.

"Thunder?" Another soldier.

"What's going on?!" This is the voice of countless people.

I saw that at the very far border, black dots gradually appeared, although the speed was slow, but the momentum was amazing!