Inside the Imperial Study of the Manna Hall.

"Your Majesty, the nationality theory proposed by His Royal Highness is beneficial to my Tang Dynasty."

"But when it is really implemented, the consumption of manpower, material and financial resources is too great, and the gains outweigh the losses."

"Rather than that, it's better to put this plan on hold."

Tang Jian pursed his lips and said, "Isn't it much better to spend all these financial and material resources on useful places?" ”

"That being said."

"But the census is imperative."

Li Shimin and Li Chengqian's words are exactly the same.

This also made Tang Jian very helpless.

"Yes, the minister also knows that the census will bring many benefits to Datang."

"But have you ever thought about it, Your Majesty, once the census is launched, it will inevitably break many old rules."

Tang Jian's face was puzzled: "When the time comes, I'm afraid it will attract the dissatisfaction of many families......

"What's the point of being dissatisfied?"

"I still need to be restrained by them?"

Li Shimin sneered: "To tell you the truth, although the census was proposed by Qian'er, it is also something I have wanted to do for a long time. ”

"These clan gate valves, do empty salaries, and don't pay taxes, what's the use of me keeping him?"

"Rather than let them get bigger and bigger and ride on my body to suck blood, it's better to pull it out as soon as possible."

didn't wait for Tang Jian to speak.

Li Shimin diverted the topic and asked: "By the way, it was Qian'er who told you that he would solve the paper matter?" ”

"Exactly."

"Then he can say, how to solve it?"

"Not really."

Tang Jian pondered for a moment and said, "But His Highness seems to have said something like improving papermaking techniques." ”

"Improving papermaking?"

Li Shimin raised his eyebrows, and he couldn't help but be a little curious.

Does Li Chengqian still understand these things?

Where did this little guy learn it?

Thinking about it, Li Shimin simply waved his hand and said, "You go down first, you can do whatever Qian'er commands." ”

"If there's something big that you can't handle, you're looking for me."

Hearing this, Tang Jian sighed and said, "The minister retired." ”

After Tang Jian left, Li Shimin got up directly and called: "Father-in-law Zhou." ”

"The old slave is here."

Father-in-law Zhou walked out from behind the screen.

"Accompany me out of the palace, I want to see what kind of fame this guy can make."

"Yes."

……

At the same time, in the palace of King Qin.

Li Chengqian asked Cheng Huailiang to buy back a large pile of bamboo and wood.

"Your Highness, what's the use of you getting these things back......

Cheng Huailiang rubbed his shoulders and said, "Could it be that this is also related to the nationality theory?" ”

"Of course."

Li Chengqian took out a wooden board from the wood and said, "If my invention can be realized, these things are enough to change this era." ”

What he wanted to invent was the wind-powered mill that was very popular in Europe in the 12th century.

If he can really succeed in the research and development, the wind generates kinetic energy, and the kinetic energy drives the grinding disc, and the grinding disc crushes the wood and other things.

Then, the energy source is continuously used to produce the pulp used in papermaking.

If it can form a papermaking assembly line like later generations, will paper still be expensive?

Moreover, the wind mill can not only do this, but it can even make some simple machinery.

It's all a small thing, but it's enough to change this era.

But Cheng Huailiang obviously doesn't understand these.

He looked at Li Chengqian with an inexplicable face.

With these planks, can you change this era?

Wait, what does the phrase change times mean?

Seeing his appearance, Li Chengqian knew that he had said too much.

But he didn't bother to explain to someone with an IQ like Cheng Huailiang, so he simply said: "Okay, you don't understand it when I explain it to you." ”

"You go and call Carpenter Zhang, I have something to order."

"Okay."

Cheng Huailiang answered and went to call someone.

Li Chengqian hurried to draw drawings.

The construction of a wind mill is not complicated.

The blades of the windmill are fixed shapes, high on one side and low on the other.

In this way, the wind can be blown in one direction on the surface of the blade, thus changing the direction of the passing wind and generating kinetic energy.

It's just that the size of the windmill and the connection points of the windmill are more complicated.

This also depends entirely on the craftsmanship of Carpenter Zhang.

Fortunately, Li Chengqian once made a wind propeller, and these things are familiar to Carpenter Zhang.

With his subordinates, he made a windmill that afternoon.

At this time, Li Chengqian hurriedly ordered people to set up the windmill and connect it to things like the teleportation shaft.

At this point, a simplified version of the windmill was formed.

At this time, everyone gathered under the windmill.

Seeing the wind blowing on the windmill, the windmill slowly turned.

Then the gears are driven, which in turn drive the conveyor shafts.

Finally, the conveyor shaft drives the grinding disc and slowly rotates.

Li Chengqian hurriedly threw a few pieces of wood that had been boiled long ago into the grinding plate.

As the grinding disc slowly turns, the white pulp flows out along the edges.

After the pulp was filled with a bucket, Li Chengqian didn't need the help of others, and carried a bucket of pulp to the big bucket that had been prepared a long time ago.

Inside the pool, several curtains made of light yarn have been arranged.

Once the pulp is well stirred, use a spoon to pour the pulp over the curtain.

Subsequently, Li Chengqian personally got his hands on it, holding the curtain and shaking it in the water.

"Your Majesty......"

Just when Li Chengqian shook the curtain.

Li Shimin suddenly walked in.

Seeing this, the servants around them stepped forward to salute.

Li Shimin waved his hand, signaling that everyone should not be polite, let alone disturb Li Chengqian.

Li Chengqian looked up at Li Shimin, he didn't speak for the first time.

He shook the curtain very earnestly.

As he shakes, little by little, the pulp spreads everywhere.

Less than half an hour later, Li Chengqian lifted the curtain.

A piece of white rice paper has been formed.

This scene made everyone around him dumbfounded.

They had all seen paper, but they had never seen how it was made.

Today, they have opened their eyes.

Even Li Chengqian couldn't help but cheer: "It's done!" ”

He took the curtain and showed off to Li Shimin: "Father, I really did it!" ”

Let's be honest.

He didn't expect to succeed in the first attempt.

But now it seems that he is still very talented.

Li Shimin also put away his surprised expression and looked at Li Chengqian with a pleased gaze.

"Well done."

Although it is only four words, there is an indescribable pride.

How can my son be worse than others?

Others can make paper, but my son, why can't he?

……

Inside the main house.

"Father, if you make paper in this way, the paper needed for the nationality theory will not be a problem."

Li Chengqian looked at Li Shimin with a smile and said, "This time, the nationality theory can be implemented, right?" ”

"Absolutely."

"Didn't I always say that I was in favor of your decision?"

Li Shimin chuckled and said, "And in my opinion, this is more than just this benefit. ”

"Huh?"

Li Chengqian raised his eyebrows and looked at Li Shimin puzzled.

Li Shimin looked at Li Chengqian and asked rhetorically: "Do you know why the family can monopolize talents?" ”

Li Chengqian frowned, and after a while, he asked, "Is it because the family has books in their hands?" ”

"Clever."

Li Shimin looked back and smiled: "You really helped my father a lot this time......