In order to show respect for the Youyou still clan, the envoys sent by Yang Hao were also of very high standard.

The envoy is a district chief called Suju of the Ministry of Officials, and the soldiers who are responsible for guarding the envoy are all carefully selected elite people, with an average height of more than 1.65 meters, such a height is already considered to be a big height in this era.

According to his estimates, Yang Hao's height is only about 1.66 to 1.67 meters, which is not a little worse than his height of 1.75 meters in his previous life.

However, in the era when the average height is very low, it makes him feel like he stands out from the crowd.

After the envoys left, Yang Hao began to devote himself to his research.

Papermaking is a way to improve the speed of teaching, but it is difficult to achieve in a short period of time, and the cost is too huge to be suitable for the current environment.

Yang Hao could only settle for the next best thing, trying to make blackboards and chalk.

With these two things, you can increase the speed of teaching.

Although he had made ink before, and even used it for drawing and writing, his ink color was just a colored dye, and it was not the same thing as real ink at all.

But it is not easy to make ink, Yang Hao knows the general steps of ink production, the most critical of which is grease.

Whether it is animal oil or vegetable oil, it is a very luxurious thing for today's Daqi tribe.

Yang Hao thought about it and gave up this expensive thing, and could only wait until the productivity of the tribe reached a certain level, and after the papermaking technology was studied, he would study this luxury thing.

The blackboard didn't work, so Yang Hao did the opposite and made a whiteboard.

In his vision, the so-called whiteboard was made of sanded and smooth wooden boards, and making wooden boards was not a problem for the Ministry of Works, which had bronze tools.

All that's left for him to do is make a pen for writing on a whiteboard.

Calcium carbonate is needed for chalk making, but to get it, you have to burn stones, which is also unrealistic for the Daqi tribe.

If he had so much manpower and material resources to burn stones, he would be able to make cement.

In the end, Yang Hao thought of a high-quality and inexpensive material, that is, charcoal.

In this day and age, there is no shortage of wood if everything is lacking.

Just burn the wood into charcoal, mix it with clay and some pine resin, you can make a simple charcoal pen, if the pine resin is not good, you can also be a little extravagant, using fish bleach glue as a charcoal binder.

With this idea, Yang Hao immediately started to act.

Charcoal is easy to obtain, and a large amount of charcoal is fired at the same time as the Ministry of Industry smelts copper.

Yang Hao sent someone to transfer a batch of charcoal from the Ministry of Industry.

After a few days of research, the first charcoal pen with the thickness of the index finger was born in Yang Hao's hands.

Looking at the only crooked and ugly thing in his hand, Yang Hao felt a sense of accomplishment in his heart, found a clay pot, and drew a line on it.

The line is very black, and there is some slag, but only need a lightly moistened cloth to wipe off the traces, although this method is used in writing, will make the user a hand of black charcoal, but compared with the previous teaching method, it is undoubtedly much more advanced.

The production process of charcoal was recorded on the bamboo slips of Tiangong Kaiwu, and Yang Hao asked the Ministry of Industry to start producing a batch of charcoal and a few whiteboards according to this method.

With this charcoal pen and whiteboard, it will not only be of great help to the teaching of the university, but also provide great convenience for his future research.

At least he wouldn't be like before, holding a broken wooden stick and pouting his ass and scribbling all over the ground, this way really affected the image of his leader as tall and majestic.

When Yang Hao forgot to sleep and eat for his own research.

A small tribe more than ten miles north of Chang'an City.

This small tribe of more than fifty people, once known as the Yang tribe, but after the fall of Sanshu and the occupation of this place by Daqi, the name is now Yang Village.

The reason why it is called Yangcun is said to be to avoid the name of the leader of the Great Qi.

As for what it was called, the ordinary people of Yangcun didn't care much about it.

And what they care about now is living in those villages that are very close to Chang'an City.

Originally, they thought that those villages were so close to Chang'an City, they would definitely be "taken care of" by Daqi, and life would be miserable, after all, Sanshu used to do this, but with the end of winter, spring came.

After defeating Zhuxia's army in an unbelievable way, Daqi actually allocated land to the people of those villages, which made them extremely envious.

Their tribe does not know how to farm, and even if they want to, they do not have seeds to cultivate, so they can only gather and graze and hunt for a living.

And those tribes not only got the land, but it is said that the Great Qi also taught them how to farm, and what is even more enviable is that when they are not farming, they can also exchange for the kind of yellow cancan called copper money by working.

As long as you have a copper coin, you can go to Chang'an City and make a wish to the gods you don't know, and it is said that the people in Chang'an City are not worried about food and clothing because of this.

Although such rumors seem to modern people to be insulting to their own intelligence, for people of this era, this may be true.

The people of Yangcun are envious, but out of fear of Daqi, although they surrendered to Daqi, most people always maintain a state of respect and distance from Daqi.

But human society is like this, there are always some people who are more curious than others.

Yu is an excellent hunter in Yang Village, and as long as he goes out, there is no time to return empty-handed.

This gave him a certain prestige in the clan, but everything in the tribe was shared, and even if he caught more prey, it had to be handed over to the tribe and distributed by the patriarch.

I don't like this way, I have worked hard to risk my life, fighting with those wild beasts, why should I share my prey with others to eat,

But looking at the expectant eyes of his people, his heart will always soften.

Last winter, the soldiers of Daqi came, and they were very envious of those soldiers who wore linen clothes.

In addition to envying the strength and wealth of Great Qi, what made him extremely concerned was that his tribe was placed under the jurisdiction of Great Qi, and he became a Qi person inexplicably.

Unlike the Sanshu monarch, Daqi did not ask his tribe to sacrifice beautiful maidens, nor did he forcibly plunder any of the tribe's livestock, except for leaving a tax that made him inexplicable, as if this new ruler didn't care about their small clan at all.

This made him feel that this Great Qi tribe was a little different.

Over the past few months, countless versions have evolved into the legend of Daqi and Chang'an City.

Since he was born, he has never left the tribe too far, and he has become more and more curious about Chang'an City.

Finally, after spring, Yu made a decision, he wanted to go to Chang'an City to have a look.

The tribesmen persuaded him not to go, but he had already made up his mind to go, bid farewell to the tribesmen, and set out on the road to Chang'an City alone with a spear and a bow and arrow.