After everything was ready, Liu Zheng asked his craftsmen to try printing, and in just two days, a copy of Sun Tzu's Art of War printed on paper was placed in front of Liu Zheng.

According to Liu Zheng's current technology, hundreds of copies can be printed a day.

When Liu Zheng took these usable books and came to Gu Yong's house, Gu Yong was still sorting out his books, those bamboo slips were bulky and large, so Gu Yong needed to tidy them up from time to time.

Liu Zheng came in and immediately said to Gu Yong.

"Yuan sigh, I finally got the books I've been tinkering with these days, you see."

Liu Zheng directly threw out the Art of War in his hand and put it on Gu Yong's table.

This book was thrown away by Liu Zheng so casually, which made Gu Yong nervous, and he immediately carefully rushed to the table and picked it up.

"My lord, be careful, this is something that needs to be handled with care, and it is precious."

Gu Yong picked up the book on the table, and then looked through it carefully.

"Sun Tzu said: Soldiers, the major affairs of the country, the place of death and life, and the way of survival, must not be ignored and ......"

Gu Yong read the art of war while looking at it.

Liu Zheng saw that Gu Yong was so careful, and he looked like a scholar, so he didn't ask directly, but waited for Gu Yong to look at it almost, and then said to Gu Yong.

"Yuan sigh, how is this book?"

"Wonderful, lord, this kind of paper book is much better than the bamboo in our hands, not only lightweight, but also easy to carry, and it is more convenient for students to teach class, it is not easy to make such books."

Gu Yong has also seen paper, after all, paper has appeared for hundreds of years, but the paper at that time was all paper made by Cai Lun, these papers are not particularly suitable for writing, and few people make those papers into books.

After all, relatively speaking, the preservation of paper is longer than that of bamboo slips.

"It's easy to make, it's much easier than making bamboo slips, which take many days to make, but you can make hundreds of copies in one day. In less than half a month, we can get a copy of the cadets of the main school and branch schools, and even send a copy to the generals in the barracks in various places, so that they can consult it when they have time. Learn from the past! ”

After Liu Zheng finished speaking, he took Gu Yong to visit the production process of the book.

first introduced the production process of paper to Gu Yong, and gave Gu Yong a few words about how to transform the paper, and then introduced the printing process to Gu Yong.

With the help of printing, Liu Zheng was able to make a large number of copies of identical books.

Gu Yong, who had already been surprised by Liu Zheng's ability to make paper, was stunned after hearing such a magic skill as printing again.

At first, he was worried that books made of paper would not be easy to preserve, but now that he saw the printing press, he knew that he was thinking too much.

With this printing technology, they can print large quantities at any time, which is a technology that will change the world.

At least if everyone has a book to read, the wisdom of the people will be opened, the wealthy clans will not be able to control this knowledge, and the scholars of the poor family will also be able to become masters, which is completely consistent with Liu Zheng's concept of the imperial examination.

As long as Liu Zheng prints different books and then sells them everywhere under Liu Zheng's hands, some young people who buy books will always have enough understanding of the things in the books, so that they can come out and become masters.

"Lord, this is a divine skill, a divine skill, with this printing technique, it will change the teaching style of our military academy, and even affect the entire Han Dynasty."

"Yuan sigh, this technology can't be made public for the time being, so after reading this, you just know it in your heart, don't go around publicizing it, we need science and technology to promote education and improve the ability of our soldiers and people."

Gu Yong naturally understood what Liu Zheng meant, and after agreeing, he began to sort out these newly tossed books, and then began to distribute them according to the personnel.

Liu Zheng, on his side, handed over papermaking and printing to Gu Yong for management, and then temporarily left the military academy.

After months of staying here, I finally got what I wanted.

He returned to his home in Kure at the beginning of December.

When he returned to Wu County, Liu Zheng had a lot of things to deal with.

In the past few months, many things have been backlogged here, and I didn't come to report to Liu Zheng, but now that Liu Zheng is back, Yuan Zhou, Xu You and others have come to report the situation to Liu Zheng.

First of all, the plague a few months ago, because of Zhang Zhongjing's full treatment, the plague has been treated.

The plague in various places under Liu Zheng had been completely completed two months ago.

However, the plague under the other princes was not so easy.

Although Liu Bei's subordinates had Liu Zheng's people to help, because the plague spread too badly and needed a lot of medicines, although Liu Zheng had already given Liu Bei some of the medicines, he still couldn't meet Liu Bei's needs.

Liu Bei's demand is large, and the more money he needs to pay Liu Zheng, but fortunately, Liu Bei is also busy with the medicinal materials needed for the medicine, and helps Liu Zheng prepare a lot of medicinal materials here, so that Liu Zheng can allocate a large number of medicines, and after a few months, he finally helped Liu Bei's people to control the plague.

Similarly, because Liu Bei's plague here was cured, the princes of other places gradually sent people to find Liu Zheng, wanting Liu Zheng to help treat his people.

For this, Liu Zheng has already explained, and those who come do not refuse, and according to Liu Bei's requirements, not only do they need to ask for medicinal materials from them, but also when they give them medicines, they also need to take out money in exchange, if they don't want to take money, then use food in exchange.

Some people have a lot of food, so they directly agree to the condition of using food for medicine, and some people have insufficient food, such as Yuan Shao, so he can only use money.

However, earlier, these princes who exchanged grain for medicine did not realize that something was wrong, but now in December, they realize that something is wrong.

Because at the beginning of spring, some princes did not complete the spring ploughing work well, and as a result, there was not much grain during the autumn harvest, and they did not realize this problem at the beginning, and until now, in winter, the people below have no food, and they realize the seriousness of the matter.

At this time, suffering from lack of food, he came to Liu Zheng again to ask for food.

Of course, Liu Zheng had expected this a long time ago, after all, Liu Zheng had already begun to let his people cultivate and stock grain at the same time a few months ago.