In the Zhuangzi outside his city, Li Yuanjia lived very happily.

Although there is no gentle and considerate princess Fang Fengzhu by his side, Li Yuanjia is a little lonely in the long dark night, but during the day, he can teach the future Tang Dynasty famous minister Zhang Cambodia, or take a turn in various workshops, and give them some suggestions "casually", which makes Li Yuanjia's life outside the city very fulfilling.

This day made Li Yuanjia feel that he was a useful person.

This also made him make up his mind, and he would come to live for a few days every once in a while in the future - although the Han Wangfu in Shengyefang was magnificent, and it was more comfortable than the inner courtyard of the palace by Li Yuanjia, but there Li Yuanjia was looking at the newly collected books every day, or practicing calligraphy, making some "ancient books" or something, it was too boring.

Especially now that there is an extra Zhang Cambodia in Zhuangzi, it adds a bit of fun.

Of course, Li Yuanjia and this future appearance of the Tang Dynasty actually don't have much in common, after all, this kid is only fourteen or fifteen years old now, even if he is much more mature than his peers in all aspects, just daring to look at it in front of the Prince of the Tang Dynasty and talk about this, it is not much different from Fang Jun and other meritorious children, but in terms of knowledge and ideas, especially various outlooks on life and values, it is too tender in Li Yuanjia's opinion.

But it doesn't matter, Li Yuanjia was not interested in discussing anything with an ancient, he just wanted to be a teacher!

Seriously, King Han is a very good teacher!

Especially when your stomach is full of dry goods, and it seems that a little bit of it can change the world, Li Yuanjia feels that any normal person should want to become a teacher and teach these things little by little.

But unfortunately, Li Yuanjia now has only one student.

And Yuwen Shutara is still a little girl who is only six or seven years old, in addition to the laziness that ordinary children are used to every day, Li Yuanjia must also take into account her ability to bear it, and she can't digest it if she teaches too much; And also take into account the little girl's interests and hobbies, and try her best to use the way she is interested in the class......

As for the others?

Hehe, no matter Li Zhong, Zhang Wan, or those children in the palace academy who are about to graduate or enroll, who dares to claim to be a student of King Han?

It won't reach Li Yuanjia's ears at all, and Han Lucheng can discount their legs!

If you dare to talk nonsense outside the palace, then it is not a matter of discounting your legs, Li Yuanjia estimates that Han Lucheng and they can directly beat the students who dare to talk nonsense to death - are you worthy of being a student of King Han?

That is, in the past year or two, Li Yuanjia has only had more time to go to the school to teach something, and when Li Zhong and them were learning things before, Li Yuanjia just went to order a few times by chance. Because he has been there many times, he has been in contact with Li Zhong and Han Cheng for a long time, not to mention the officials sent to him by the emperor, even the housekeepers like Han Shan and Han Lucheng don't do it......

Well, that's a long way off.

Anyway, Zhang Cambodia appeared in his life, and Li Yuanjia was very happy.

The reason is simple, because this kid's status is high enough.

Regardless of whether the officials in their family are high or low, whether the power is big or small, one thing is certain, they are definitely children of the family, otherwise it is impossible to enter Taixue to study.

Messing around with him, no one will say much.

Especially after Li Yuanjia casually praised Zhang Cambodia in front of others, making them think that they were moved by the idea of loving talents, no one would say anything...... Yes, even if it is Aicai, only those of Zhang Cambodia's level are qualified, like Li Zhong and Zhang Wan, they are not worthy at all, and Wang Pu is not qualified enough!

So in the past few days in Zhuangzi, Li Yuanjia has definitely put a lot of thought into it, how can he limit the content to mathematics and Arabic numerals?

Under the worried gaze of Han Lucheng, Wang Pu and others, Li Yuanjia took the kid almost to the side of the papermaking and printing workshop.

"Actually, there is nothing difficult about making paper, because no matter how you improve it, as long as you choose the right materials, there are still a few key steps - beating, soaking, boiling, screening...... Whether the final blank paper is good or bad depends on the details of these steps...... Haha, of course, don't think it's very simple, Wang Pu and they can make Han Wang paper, it took dozens of people to work hard for several years, and almost every step was tried hundreds of times before they found the best one......"

"The advantage of movable type is that it is convenient and fast, especially when you want to print a lot of books at once...... At the same time, it can be preserved for a long time, even if it is occasionally broken, it doesn't matter, just make another one. But the downside...... I told you just now, it's just one word - expensive! Even if this king wants to put together this set of movable characters, it will be difficult to do it without ten or eight years......"

……

"Cambodia, do you know what this thing is?"

On this morning, pointing to a lump of white things in front of him, Li Yuanjia asked with a smile.

"This ......"

Stretching his neck to observe it carefully, and even carefully touching it, Zhang Cambodia still shook his head a little dazedly: "If you go back to the king, the student doesn't know this thing...... It looks like silk, but the difference is a bit big! ”

"Haha......"

After listening to his words, Li Yuanjia was immediately happy.

However, cotton is indeed quite rare in these years, and it is not strange that Zhang Cambodia does not know it, so after laughing, Li Yuanjia explained in detail, and then said: "Although the yield of this thing is not large, and it also occupies the field, the effect of filling it in the clothes to keep out the cold is excellent...... When those people in my house have finished the spinning wheel used for cotton, they will be able to make cloth in the future, and it can be said that it will be very useful! ”

“…… Be. ”

After being stunned for a moment, Zhang Cambodia nodded with a sigh.

What the hell is this......

Called cotton?

couldn't help but press the white cloud in front of him with his hand again, and a trace of curiosity flashed in Zhang Cambodia's eyes.

What can make the king value so much should be a good thing, right?

After thinking about it for a while, Zhang Cambodia still asked: "King, according to what you just said, how many catties of cotton can be grown in this acre of fertile land?" In that case, I'm afraid the farmers don't necessarily want to plant, right? And compared to silk cotton, this thing seems to be ...... Ahem, the students are talking nonsense, and the king doesn't have to take it to heart. ”

“……”

Seeing Zhang Cambodia suddenly shut up, Li Yuanjia's face suddenly darkened.

What does this kid want to say later, he can't think of it? It's just that the cost is too high, and it has to occupy fertile land, and farmers are definitely reluctant to plant; And if this thing is no different from silk, rich people are not interested.

Li Yuanjia really heard a lot of this kind of argument.

So he didn't talk nonsense, and waved his hand directly: "Hehe, Cambodia, this king will give you ten catties of cotton...... Forget it, given to you you you don't know how to use them. Aren't you on leave now? This king asked someone to make you a set of quilts, and then a set of cotton clothes, you try it out first, and then ......"